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Under the impetus of the new generation of technological revolution, digitalization offers new opportunities for the green development of the marine economy. Utilizing data from 11 coastal Chinese provinces and cities between 2011 and 2020, this paper constructs a comprehensive index system for the green development of the marine economy. Based on this, a fixed effects model is used to explore the impact of digitalization on the green development of the marine economy and its underlying mechanisms. The findings indicate that digitalization effectively promotes the green development of the marine economy, with this effect being more pronounced in regions bordering "the Belt and Road" initiative. Mechanism tests indicate that digitalization promotes the green development of the marine economy by raising the comprehensive development level of ports. When breaking down the components of port development, it is found that improving the port location quotient plays a more crucial role than port radiation intensity in how digitalization promotes the green development of the marine economy. Additionally, environmental regulation exerts a U-shaped moderating effect on the relationship between digitalization and the green development of the marine economy. Based on these findings, it is recommended to use digital technologies and data, expedite the development of marine big data platforms, integrate port resources, optimize port operations, and apply environmental regulation policies judiciously to promote efficient marine resource management and sustainable marine economic development. [ABSTRACT FROM AUTHOR]

Offshore mariculture is critical for global food security and economic development. Advances in deep learning and data-driven approaches, enable the rapid and effective monitoring of offshore mariculture distribution and changes. However, detector performance depends heavily on training data quality. The lack of standardized classifications and public datasets for offshore mariculture facilities currently hampers effective monitoring. Here, we propose to categorize offshore mariculture facilities into six types: TCC, DWCC, FRC, LC, RC, and BC. Based on these categories, we introduce a benchmark dataset called OMAD-6. This dataset includes over 130,000 instances and more than 16,000 high-resolution remote sensing images. The images with a spatial resolution of 0.6 m were sourced from key regions in China, Chile, Norway, and Egypt, from the Google Earth platform. All instances in OMAD-6 were meticulously annotated manually with horizontal bounding boxes and polygons. Compared to existing remote sensing datasets, OMAD-6 has three notable characteristics: (1) it is comparable to large, published datasets in instances per category, image quantity, and sample coverage; (2) it exhibits high inter-class similarity; (3) it shows significant intra-class diversity in facility sizes and arrangements. Based on the OMAD-6 dataset, we evaluated eight state-of-the-art methods to establish baselines for future research. The experimental results demonstrate that the OMAD-6 dataset effectively represents various real-world scenarios, which have posed considerable challenges for current instance segmentation algorithms. Our evaluation confirms that the OMAD-6 dataset has the potential to improve offshore mariculture identification. Notably, the QueryInst and PointRend algorithms have distinguished themselves as top performers on the OMAD-6 dataset, robustly identifying offshore mariculture facilities even with complex environmental backgrounds. Its ongoing development and application will play a pivotal role in future offshore mariculture identification and management. [ABSTRACT FROM AUTHOR]

High-quality marine economic development (HMED) is regarded as a new development pattern of the marine economy in China. This paper aims to examine the dynamic changes and improvement strategies of HMED from the perspective of the green total factor productivity (GTFP) growth. First, the GTFP growth of the marine economy in China's coastal regions for the period 2007-2020 is calculated using the bootstrapped Malmquist index. Second, the dynamic changes and spatial impacts of the GTFP growth are characterized using kernel density estimation (KDE). Moreover, a novel analytical framework to study the improvement strategies of the GTFP is developed. Within this framework, the fuzzy set qualitative comparative analysis (fsQCA) method is used to explore the paths to achieve HMED. The findings show that: (i) the GTFP growth for coastal regions shows significant fluctuations, suggesting that a stable pattern of marine economic development has yet to be established; (ii) the regional distribution of GTFP growth varies significantly, with provinces with fast GTFP growth gathering resources from neighboring provinces, resulting in a siphon effect; (iii) for coastal provinces that lack certain development conditions, the combined effect of other advantageous factors can be used to achieve HMED. Finally, this study presents policy recommendations for achieving HMED, which can provide insights into the design of China's future marine economic policies. [ABSTRACT FROM AUTHOR]

Introduction: As global resource demands and environmental challenges intensify, China's vast marine resources present a significant opportunity for sustainable economic development. This study investigates the impact of financial development on high-quality growth in China's marine economy across 11 coastal regions from 2011 to 2020. Methods: We examine a mediation and moderation model linking financial development and marine economic quality in China, where the marine economy increasingly relies on financial support. This study proposes marine innovation output and industrial structure upgradation as mediators, with marine capital investment as a moderator. Results: Our findings reveal that financial development significantly promotes high-quality marine economic growth, albeit with regional heterogeneity. The strongest effect is observed in the Eastern Marine Economic Zone, while the Southern Marine Economic Zone shows the weakest impact. Marine scientific research and industrial structure upgrading serve as key mediating factors, with the former demonstrating a stronger intermediary effect. Notable, marine capital investment positively moderates the relationship between financial development and marine economic growth. Discussion: This study innovatively combines macro-finance and micro-finance indicators to construct a comprehensive financial development index system. It incorporates a multi-dimensional approach to measuring high-quality development in coastal regions, challenging one-size-fits-all models by highlighting regional variations. By providing insights into specific differences and underlying mechanisms, our study offers valuable guidance for policymakers in crafting region-specific strategies to leverage financial development for sustainable marine economic growth. [ABSTRACT FROM AUTHOR]

With the promotion of marine power strategies and marine ecological civilization construction, marine green development has become an important issue. This study utilizes the mixed distance function Epsilon-based measure and the global Malmquist--Luenberger index model, which accommodates both radial and non-radial models, to evaluate the marine green total factor productivity (GTFP) across 11 coastal regions of China. The findings of this study are as follows. First, the marine GTFP showed a gradual increase in China's coastal regions during the study period, with notable differences observed among the three primary marine economic circles. Second, technological advancement was the primary driver of the transformation of marine GTFP. Third, the distribution across the space pattern of marine GTFP tended to be concentrated continuously, which shows that the overall spatial distribution pattern of marine GTFP remained relatively stable. Fourth, there is no obvious σ convergence in a northern, eastern marine economic circle. Both absolute and conditional β convergence exists, indicating that the marine GTFP converged to their respective steady-state levels during the study period. This study can provide decision-making reference for accelerating the green growth and sustainable development of China's marine economy. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Zhejiang University (Science Edition) is the property of Journal of Zhejiang University (Science Edition) Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

SDG-14 aims to protect and develop marine areas. In this context, many countries need to apply technological developments to ensure environmental protection in the marine economy. This study therefore examines the difference between technological innovations at different stages of maritime development in promoting high-quality maritime development using individual fixed effects and threshold effects models. The study concludes that technological innovation in general plays a crucial role in promoting the development of China's maritime economy. However, this role has a significant dual-threshold effect, which first shifts from inhibition to promotion and then gradually weakens as the stage of economic development continues to increase. There are also significant differences in the rise of technological innovation of the three major maritime economic cycles to the high-quality development of the maritime economy. Thus, the study highlights the crucial role of technological innovation in the sustainable development of China's maritime areas and discusses various policy implications, such as focusing on economic development in coastal provinces in the early development stage, relying on technological innovation in coastal provinces in the growth stage, and trying to maintain the growth momentum of technological efficiency. [ABSTRACT FROM AUTHOR]

Coastal fisheries in Tanjung Medang Village, North Rupat District, Bengkalis Regency play an important role in shaping the economic characteristics and culture of its community. Physically, the North Rupat District is predominantly divided into residential areas along the inter-village roads and coastal areas that serve as the primary source of livelihood for most of its population. Now, North Rupat District has become a destination for both residents and visitors, impacting the existence of increasingly complex local economic resources and wisdom along the coastal areas of North Rupat District. Revitalization of coastal fisheries production factors is needed to improve economic life. Therefore, what model of economic development policy is needed to access traditional local economic resources to reduce local poverty? What kind of revitalization is required for traditional fishermen to utilize maritime economic resources fairly for the local population? The economic development policy for alternative marine economic resources involves integrating and collaborating the rights and obligations of state actors, private actors, and the public in maritime politics and economics. The revitalization of coastal fisheries production factors includes organizing the ecological integration of areas as traditional fishing grounds, tourism economic areas, and the originality of traditional culture across various disciplines, as well as fostering cultural integration among stakeholders and intergenerational concern among the Tanjung Medang community. [ABSTRACT FROM AUTHOR]

To proactively respond to the national fourteenth Five-Year Plan policy, we will adhere to a comprehensive land and sea planning approach, working together to promote marine ecological protection, optimize geological space, and integrate the marine economy. This paper provides a comprehensive review of the sustainable development of marine geological hazards (MGHs), with a particular focus on submarine landslides, the marine environment, as well as the marine economy. First, the novelty of this study lies in its review and summary of the temporal and spatial distribution, systematic classification, inducible factors, and realistic characteristics of submarine landslides to enrich the theoretical concept. Moreover, the costs, risks, and impacts on the marine environment and economy of submarine engineering activities such as oil and gas fields, as well as metal ores, were systematically discussed. Combined with the current marine policy, an analysis was conducted on the environmental pollution and economic losses caused by submarine landslides. Herein, the key finding is that China and Mexico are viable candidates for the future large-scale offshore exploitation of oil, gas, nickel, cobalt, cuprum, manganese, and other mineral resources. Compared to land-based mining, deep-sea mining offers superior economic and environmental advantages. Finally, it is suggested that physical model tests and numerical simulation techniques are effective means for investigating the triggering mechanism of submarine landslides, their evolutionary movement process, and the impact on the submarine infrastructure. In the future, the establishment of a multi-level and multi-dimensional monitoring chain for submarine landslide disasters, as well as joint risk assessment, prediction, and early warning systems, can effectively mitigate the occurrence of submarine landslide disasters and promote the sustainable development of the marine environment and economy. [ABSTRACT FROM AUTHOR]

The digital economy plays an important role in promoting the high quality and sustainable development of the marine fishery economy. Based on the panel data of the digital economy and marine fishery development from 2011 to 2022, we firstly adopted the entropy method to comprehensively evaluate the economy quality level of the digital economy and marine fishing. Secondly, we constructed a two-way fixed effect model to empirically analyze the impact of digital economy development on the marine fishery economy quality and the mediating role of marine green science and technology innovation, and further explored the regional heterogeneity of the digital economy on the marine fishery economy quality. Several findings emerge. The digital economy and the marine fishery economy quality level was relatively low and showed a fluctuating increase. The development of the digital economy can significantly improve the economy quality of marine fishing, and the conclusion was still valid after considering a series of robustness tests. The digital economy can drive the development quality of the marine fishery economy through marine green technology innovation. This paper proposes fostering the advancement of digital technology in the marine fishery sector, to effectively harness the innovation-driven potential of the digital economy, so as to facilitate the harmonious development of both the marine and digital economies. [ABSTRACT FROM AUTHOR]

The Bahari Sembilang Mandiri Program (BERLARI) is an integrated community empowerment program to resolve problems faced by coastal communities around the Berbak Sembilang National Park (TNBS) which is supported by PT Kilang Pertamina International (KPI) Refinery Unit III Plaju. This program aims to empower communities and improve economic conditions by utilizing available marine resources. One way to improve the marine economy is to empower women to innovate the processing of marine fish into salted fish in Sembilang Hamlet, Sungsang IV Village, Banyuasin Regency. The program's background is that the community solely depends on fresh marine products for their livelihood, while salted fish, a marine processed product with a high selling value, enjoys widespread marketability throughout Indonesia. The purpose of this study is to describe the process of empowering women in the 3T area (underdeveloped, outermost, and remote) and to analyze the added value of salted fish processing carried out by women's groups in the Bahari Sembilang Mandiri program. The research method used is descriptive qualitative with participatory observation data collection techniques, field notes, and indepth interviews with informants. The data analysis used is based on interactive qualitative techniques and the Hayami method. The results of this study indicate that the innovation program of marine products into salted fish can provide economic and social benefits for coastal communities, especially women. In addition to increasing income, this program can also encourage the creation of new jobs, strengthen food security, and support local economic development. Processing marine fish into salted fish generates an added value of 48%. Making salted fish has a lot of added value. It can increase the economic value of products by raising market selling prices and extending their shelf life. [ABSTRACT FROM AUTHOR]

Under the impetus of the new generation of technological revolution, digitalization offers new opportunities for the green development of the marine economy. Utilizing data from 11 coastal Chinese provinces and cities between 2011 and 2020, this paper constructs a comprehensive index system for the green development of the marine economy. Based on this, a fixed effects model is used to explore the impact of digitalization on the green development of the marine economy and its underlying mechanisms. The findings indicate that digitalization effectively promotes the green development of the marine economy, with this effect being more pronounced in regions bordering “the Belt and Road” initiative. Mechanism tests indicate that digitalization promotes the green development of the marine economy by raising the comprehensive development level of ports. When breaking down the components of port development, it is found that improving the port location quotient plays a more crucial role than port radiation intensity in how digitalization promotes the green development of the marine economy. Additionally, environmental regulation exerts a U-shaped moderating effect on the relationship between digitalization and the green development of the marine economy. Based on these findings, it is recommended to use digital technologies and data, expedite the development of marine big data platforms, integrate port resources, optimize port operations, and apply environmental regulation policies judiciously to promote efficient marine resource management and sustainable marine economic development.

Based on the existing research results, the evaluation index system of marine economy and regional economic development of Zhejiang Province was established. The relevant data of marine economy and regional economy of Zhejiang Province from 2011 to 2020 were taken as the research objects, and the comprehensive weight and comprehensive evaluation score were calculated using AHP and entropy method. The degree of coordination between marine economy and regional economy development and the main limiting factors were analyzed by coupling coordination degree model and obstacle degree model. The results show that the overall change trend of the comprehensive evaluation scores of marine economy and regional economy subsystems is consistent, and the comprehensive development level of marine economy is better than that of regional economy. The coupling level between subsystems is generally high, and the coordination level is constantly improved, but the coordination degree is not high. The key factors affecting the coordinated development of marine economy and regional economic system are the proportion of marine research and development (R&D) expenditure to the gross marine product, the proportion of R&D expenditure in GDP, the proportion of marine tertiary industry to marine secondary industry, the proportion of regional GDP to national GDP, the number of patents granted and the growth rate of added value of marine tertiary industry. Based on this, relevant policy suggestions are put forward to provide guidance for the high-quality marine economy of Zhejiang Province to promote regional development.

The oceans are strategically important to high-quality development.Strengthen China’s maritime development is an important part of the cause of socialism with Chinese characteristics.In recent years, coastal cities in various regions are vigorously developing the marine economy and achieve significant results under the influence of the maritime power strategy.Weifang is an important coastal city on the south bank of Laizhou Bay, is stepping up efforts to build Weifang into a strong maritime city, and marine economy has become an important growth pole for the city’s economic development.The paper provides a comprehensive analysis of the necessity and four advantages of high-quality development, current situation, and constraints of marine economy in Weifang, with the analysis, five countermeasures and suggestions for high-quality development of marine economy in Weifang are put forward.The research results can provide intellectual support for the high-quality development of marine economy in Weifang city and provide reference for future research.

The marine economy is facing multiple risks. How to solve the development crisis, establish a new dynamic mechanism and innovate the evolution path has become the focus of the international community. Based on the relevant innovative initiatives of major international organizations such as the United Nations and the European Commission, the thinking mode of healthy and Green Ocean, the focus and diversification of financial field, the pattern of science and technology innovation, the impact of digital intelligentization, the blue-skilled talent system will form the motive mechanism of sustainable ocean economy in the future. Combined with the reality of marine economy in America, Britain and Norway, there are three different evolution paths, which have a good demonstration and reference for China’s marine economy. China should accelerate the development of science-and ecosystem-based ocean planning and implement more systematic and inclusive integrated ocean management through new partnerships, we will further focus on the competitiveness of the marine industry, digitization, and green and low-carbon development, with a focus on enhancing the driving capacity of scientific and technological innovation, professional training, and financial capital.

Coastal countries’ productive capabilities are significantly influenced by the structure, dynamics, and evolution of marine products. In this study, we examined the market development dynamics of marine products across 156 coastal countries from 1995 to 2021, utilizing product space and economic complexity frameworks. We constructed and analyzed the product space of 106 marine products across six major marine industries, investigating the positioning and potential of various coastal countries within this space over three decades. The key findings were as follows: (1) global marine product exports exhibited substantial growth and increased geographical diversification. (2) The marine product space exhibited a core–periphery structure, with high-complexity marine shipbuilding products at the core and resource-based primary products at the periphery. (3) Coastal countries’ positions in the product space could be clustered into four distinct types: (i) complex diversified economies with constrained development potential, (ii) developed and industrialized countries with coexisting complexity and diversification, (iii) small island and developing countries with coexisting specialization and potential, and (iv) single-resource-dependent countries in the Middle East and Gulf of Guinea in Africa. (4) Each type faced unique development opportunities and challenges. We recommend that all economies continually leverage their comparative advantages in complex products. Specifically, type (i) and (ii) countries should focus on strengthening inter-product technological and knowledge networks and developing more integrated industrial chains. Type (iii) and (iv) countries should capitalize on their resources and geographical advantages to develop new, more complex products that align closely with their existing product baskets.

Marine economy is a valuable pillar for the development of coastal areas. It is of profound significance to explore the influence of marine economy development on economic resilience of coastal areas. This paper constructs an economic resilience assessment framework based on resistance, adaptability, and evolutionary power, adopts the entropy method to calculate the economic resilience development level in China's coastal areas from 2006 to 2019, and examines in detail the driving factors affecting the economic resilience from the indicator level. Furthermore, panel regression models are used to explore the influence of marine economic development on the economic resilience of China's coastal areas and its mechanism of action. The results show that: (1) China's coastal areas have an overall trend of rising economic resilience. The spatiotemporal differentiation characteristics of different economic resilience factors are significant. (2) Factors such as regional economic scale, innovation input, industrial transformation, resident income, consumption scale, degree of marketization, and financial scale are key factors to enhance the economic system resilience of coastal areas. (3) There is a significant positive impact of the marine economy on the economic resilience of coastal areas, and this promotion effect is regulated and constrained by the level of diversification of marine industries and the level of concentration of marine industries. (4) Heterogeneity analysis shows that there are significant individual differences in the impact of Marine economy on economic resilience, and its marginal effect first increases and then decreases. The corresponding policy implications are further analyzed based on the research results. [ABSTRACT FROM AUTHOR]

The first official Marine Economy Satellite Account (MESA) of the United States was created to improve the credibility and reliability of comprehensive measurements of the nation's dependence on ocean and coastal resources. This methodology improves upon previous methods and yields results that (1) are consistent with national accounts statistics, such as gross domestic product, (2) capture additional categories of marine-related activities, and (3) bring measurement of the US marine economy into alignment with the most advanced international practices. These advances support recent sustainable growth initiatives of the US blue economy, allow policy makers to better evaluate industries perhaps most vulnerable and at risk from coastal hazards, and enable government and private businesses to promote and invest in this crucial driver of the US national economy. [ABSTRACT FROM AUTHOR]

The marine-terrestrial interlaced zone serves as a crucial spatial hub linking the functional zoning of both land and sea areas. Optimizing the ecological function, economic function, and national security function of the marine-terrestrial interlaced zone is of significant importance for promoting the coordination between land and sea functional oriented zoning and achieving their mutual beneficial interaction. It also contributes to enhancing the economic, social, and environmental benefits, effectively allocating resources, and advancing social sustainability. Building upon the clarification of the current development status and characteristics of China's marine-terrestrial interlaced zone, the research systematically examines the key issues existing in the coordination between land and sea functional oriented zoning at the marine-terrestrial interlaced zone. Furthermore, it puts forward key construction tasks and development pathways aimed at enhancing the coordination functions of the marine-terrestrial interlaced zone. [ABSTRACT FROM AUTHOR]

Copyright of Agricultural Outlook (1673-3908) is the property of Institute of Agricultural Information, Chinese Academy of Agricultural Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This paper analyzes the connotation and essence of marine economy with high-quality development. Combined with the actual construction of powerful marine economy in Zhejiang Province, it constructs an evaluation system with “quality efficiency of marine economic development-marine innovation driving ability-external development level-marine ecological environment quality-social sharing degree” as the benchmark layer, and uses the entropy method to determine the index weight. This paper empirically analyzes the high-quality development level of Zhejiang marine economy from 2010 to 2020, and analyzes the internal relationship between each subsystem and the high-quality development of marine economy. The results showed that: The five subsystems were ranked in the order of external development level > quality efficiency of marine economic development > social sharing degree > marine innovation driving ability > marine ecological environment quality.During the whole evaluation period from 2010 to 2020, the evaluation results of high-quality development level of marine economy in Zhejiang Province showed a steady improvement trend. From 2010 to 2015, the quality and efficiency of sub-system marine economic development, marine innovation driving ability and social sharing degree all showed a trend of rapid improvement. After 2015, the external development level became the first driving force to improve the comprehensive evaluation results.

Guided by the new development concept, this paper constructed an indicator system for the high-quality development of the marine economy, selected the data of coastal areas in China from 2007 to 2019, and analyzed the coupling coordination degree and regional differences of the high-quality development of the marine economy in China with the entropy method, coupling coordination degree and Dagum Gini coefficient method. The results showed that the development level of the five dimensions of the high-quality development of China's marine economy showed an upward trend, but there was a large room for improvement. The high-quality development of China's marine economy had gone through two stages including near imbalance and barely coordinated. The coupling coordination degree of high-quality development of the marine economy had the largest difference in 2007, and had shown a downward trend since then. The southern marine economic area and the difference between the southern marine economic area and the northern was the main reason for the difference of coupling coordination degree. According to the research conclusions, the corresponding suggestions were put forward to improve the coupling coordination degree of high-quality development of China's marine economy.

How to coordinate the development of marine economy and the protection of marine right and interests has always been an important issue facing Japan's ocean governance. During the Meiji period, the Japanese government led the development of the marine economy and made remarkable achievements, but the overseas expansion during the imperial period was a death blow to the Japanese marine economy. After the defeat of World War Ⅱ, the indirect guidance mode of the government helped Japan's marine economic revival, but the diversification of ocean governance subjects had become an important factor hindering the construction of a comprehensive maritime law enforcement system and marine environmental protection. At present, the Japanese government was introducing a series of reform measures to develop the marine economy. In the future, the focus of Japan's ocean governance will shift to the development of the marine economy and seek the way for the survival and development as an island country.

Based on the panel data of coastal areas in China from 2006 to 2019, this paper empirically analyzed the impact of industrial agglomeration on regional marine green total factor productivity. The results showed that the relationship between industrial agglomeration and regional marine green total factor productivity showed an inverted "U" curve. Industrial agglomeration improved marine green total factor productivity in the early stage, and after crossing the critical value, it would have a suppressive effect on marine green total factor productivity. From the perspective of regional heterogeneity, the impact of industrial agglomeration on marine green total factor productivity was different in the northern, central and southern regions, among which the northern region was similar to the overall situation, while there were regional differences in the central and southern regions. According to the conclusion of the study, local governments should ensure the sustainable development of the marine economy according to the local industrial agglomeration and local conditions.

Enhancing the marine carrying capacity (MCC) is of important value in hastening the transformation of the marine economy and realising the marine economy high-quality development (MEHD). We explore the synergistic mechanism between the MCC and MEHD and its comprehensive indicator system, measure the synergistic relationship between China's MCC and MEHD from 2006 to 2020 using the improved TOPSIS model and the composite system synergism model, and explore the influencing factors and their interactions using geographic probes. The research findings are (1) that China's MCC and MEHD show a growing trend during the study period, in which marine green development is at a higher level and the cultivation of marine knowledge improves most significantly, but the general value of the MEHD is relatively low. (2) In terms of the synergistic relationship, the degree of ordering of the two shows a sustained rising trend, and the degree of ordering of the marine economy development as a whole is higher than the MCC; the degree of synergy is increasing, but the general value of synergistic development is low. (3) The main factors driving the MCC and MEHD are the marine consumption capacity, the marine opening, and the marine industrial structure; the explanatory power of most factor interactions tends to decrease, and the explanatory power of the interactions among the development of land-based economy, the marine industry structure, and the marine economy increase, and the impacts of the different factor interactions on the synergistic development are all greater than the factors. The influence of different factors on synergistic development is greater than the influence of each factor alone. [ABSTRACT FROM AUTHOR]

The maritime economy is gradually becoming a new engine for the high-quality development of the economic and social sectors. However, due to factors such as geographical location and natural endowments, there are significant regional disparities, making it challenging for the national maritime economy to achieve balanced development. Therefore, this paper constructs an index evaluation system for the high-quality development of the maritime economy. It calculates the comprehensive index and subsystem indices of the high-quality development of the maritime economy in 11 coastal provinces (cities and districts) in China from 2008 to 2020 and examines their regional disparities and dynamic evolution. The study reveals the following: (1) The high-quality development levels of the maritime economy in coastal provinces show a fluctuating upward trend, with different dimensions of advantages in each province. (2) The overall regional disparities exhibit a development trajectory of expansion followed by contraction, with a general trend in narrowing disparities. Currently, the southern maritime economic zone has the greatest internal differences, and the gap between the southern and northern maritime economic zones is relatively pronounced. (3) Significant fluctuations are observed in the disparities in high-quality development of the maritime economy between China and the three major maritime economic zones. The internal gaps within the northern and southern maritime economic zones have expanded to varying degrees, whereas the gaps within the eastern maritime economic zone have shown some convergence. (4) Inter-group mobility among provinces in different states of high-quality development of the maritime economy is low, and provinces in a low-level state exhibit a noticeable "low-end lock-in" phenomenon. This paper, through a timely spatial and temporal analysis of China's high-quality development process of the maritime economy, aims to provide policy guidance for advancing the high-quality development of the maritime economy. [ABSTRACT FROM AUTHOR]

The marine economy is a vital component of boosting the high-quality development of the Chinese economy. According to the concept of high-quality development, we construct the evaluation indicator system to measure the level of high-quality development of the marine economy by means of the combined empowerment method. We explore the coupling coordination relationship and evolution trend with the coupling coordination degree model, and finally, we analyze the regional differences using the Dagum Gini coefficient. The results show that, (1) from the perspective of time, China's marine economic high-quality development index has been steadily improving, but there is still great potential for progress. From the perspective of spatial characteristics, the eastern marine economic circle has the best level of high-quality economic development. (2) From 2012 to 2022, the coupling coordination degree of high-quality development of the marine economy experienced five stages, from the verge of disorder to finally stepping into the good coupling coordination stage. (3) The overall difference in the marine economy is gradually narrowing. Among the three major marine economic circles, the southern marine economic circle has the largest internal discrepancy, which has become an important factor affecting the high-quality development of the marine economy. The above research results helped relevant decision-making departments to deeply understand the status quo and outstanding contradictions of the high-quality development of the marine economy in China. [ABSTRACT FROM AUTHOR]

Marine fungi are important sources of new metabolites including certain enzymes of medical interest due to their enormous capacity to adapt themselves to extreme environments. Living in a highly competitive ecological niche, they produce certain unusual chemical moieties. Marine biological resources are green, abundant, renewable and aid in economic development. The present study investigates the production of L-Glutaminase which is of therapeutic and industrial importance, from marine fungi of coastal Karnataka. Primary screening on agar plates and submerged fermentation in broth was employed for enzyme production. Both marine yeasts (Pichia sp) and filamentous fungal strains (Aspergillus, Penicillium) were found to be efficient producers of L-Glutaminase. Of the 42 isolates, five potential strains were selected through primary screening and Thin Layer Chromatography was performed to confirm the production. Filamentous fungi were identified through morphological and molecular methods as Penicillium and Aspergillus strains with 99-100% similarity. A. foveolatus (MT667385)and A. nidulans (MT667422) were potential producers (1.58U/ml and 1.41IU/ml). The yeast identified was Pichia kudriavzevii (MT667428), which was a moderate producer of Glutaminase and first marine yeast reported for this enzyme production. Neosartorya quadricincta (MT667427) and P. citrinum (MT667426) are also moderate producers. After screening the marine fungi, the isolated strains’ potential to produce L-Glutaminase was confirmed using SDS PAGE, FTIR and Mass analysis. This study emphasizes the necessity of marine fungal culturing and the scope of use of these fungi for further commercial production of L-Glutaminase which would uplift marine economy.

The digital economy and the high-quality development of the marine economy influence each other. This paper uses the entropy-TOPSIS method to construct a total of 21 secondary indicators and uses the coupling coordination model to obtain the coupling coordination level and coupling coordination type of high-quality development of digital economy and marine economy of 11 coastal provinces and cities in China from 2013 to 2019. The study found that the development of the digital economy in 11 coastal provinces (autonomous regions and municipalities directly under the central government) in China showed a gradual upward trend, while the high-quality development trend of the marine economy was relatively stable. From 2013 to 2019, the coupling degree of the digital economy and high-quality marine development in most coastal areas was stable and maintained a good dynamic correlation. While the interaction between the high-quality development of the digital economy and the marine economy has been enhanced, the overall development level of the two systems has also been improved.

Weihai has natural advantages and huge potential in the development of marine economy. How to better exploit and utilize the traditional advantages, better transform and recreate new advantages, and promote the development of the ocean ahead is a major issue facing Weihai City. This paper starts from the concept of big ocean, systematically and scientifically analyzed the history and current situation of Weihai City in the spatial and resource development and utilization of the ocean, marine science and technology innovation drive, and the mechanism model of marine economic development, puts forward the process and structural problems faced in the process of promoting the high-quality development of marine economy, and deeply analyzes the reasons for the emergence of the problems. Based on the whole process of marine development, this paper innovatively proposes countermeasures and suggestions for consolidating traditional advantages, shaping new advantages and creating a new pattern of marine economic development from both macro and micro levels, which are in line with the actual situation of Weihai City.

Although the high-quality development of the marine economy has become a new paradigm to explore sustainable development in China, the path to its realization remains unclear. One path being explored in China is industrial agglomeration, but whether industry clustering leads to high-quality development of the marine economy has not been fully explored. Thus, the impact of industrial agglomeration on the marine economy deserves further investigation. This study first establishes a five-dimensional index system (innovation, coordination, greenness, openness, and inclusivity) to gauge the quality of marine economic development and then applies a hybrid method to evaluate each dimension. Furthermore, from an industry perspective, this study explores the influence mechanism of marine industry agglomeration on the high-quality development of China’s marine economy from several dimensions. The results show that (1) different regions have significantly different development levels, and the growth rates vary across each dimension. (2) From a broad standpoint, marine industry clustering has greatly promoted high-quality economic development in four sectors: innovation, coordination, openness, and inclusivity. However, its impact on green development has a time lag. (3) From the perspective of geographical heterogeneity, the impact of industry clustering is insignificant in the Bohai Rim region, positive in the South China Sea region, and negative in the Yellow Sea and East China Sea. Our study can enrich the research in this field and provide reference for the development of marine industry and marine economy in coastal areas.

The marine economy and submarine landslides represent two critical and seemingly disparate areas of concern within oceanic studies. The marine economy encompasses industries and activities such as fishing, shipping, and tourism that rely on the health and accessibility of marine environments. In contrast, submarine landslides, which are significant geological hazards, can impact marine infrastructure, disrupt economic activities, and pose risks to coastal communities. This article explores the balance between advancing marine economic interests and mitigating the risks associated with submarine landslides. It examines current research, technological advancements, and policy measures aimed at addressing these challenges. Strategies for enhancing economic sustainability while safeguarding against geological hazards are discussed, emphasizing the need for integrated approaches that consider both economic and environmental factors. [ABSTRACT FROM AUTHOR]

This study examined the nexus between per capita gross ocean product (GOP) growth and total nitrogen (TN), total phosphorus (TP), and chemical oxygen demand (COD) discharged from land-based sources in Guangxi and China. Multiple pollution indicators, such as red tide area (RTA), seawater quality area (SWQA), and eutrophication area (EA), were used as marine environmental quality indicators, and annual time series data during the period 2010–2019 were employed. The data were analyzed using the environment Kuznets curve fitting model. Results showed that the average annual growth rates of the GOP and gross domestic product (GDP) of China were 9.88% and 10.79%, respectively, and those of Guangxi were 13.62% and 10.02%, respectively. The average annual GOP ratio in GDP for Guangxi and China was 6.59 and 9.47, respectively. The marine tertiary industry was the most dominant marine industry; it accounted for 41.12–50.01% (mean: 46.12%) of Guangxi's GDP and 47–60% (mean: 52.47%) of China's GDP. The TP, COD, SWQA, and EA of Guangxi and the TP, TN, COD, SWQA, and EA of China displayed inverted U-shaped GOP growth. These findings indicate that the marine economic growth and marine environmental quality of Guangxi and China are harmonious. However, TN increased synchronously with marine economic growth in Guangxi. Therefore, the industrial structure must be further optimized, pollutant discharge management must be strengthened, and the harmonious development of Guangxi's marine economy and marine environment needs to be promoted. [ABSTRACT FROM AUTHOR]

China's economy has entered a new stage of high-quality development, and the high-quality development of the marine economy requires a more scientific and reasonable index system to reflect the development of the marine economy in a comprehensive and accurate manner. The paper used the subjective and objective assignment method to combine the relevant data of Qingdao City's marine economy from 2015 to 2020, and conducted a comprehensive research and empirical analysis on the level of Qingdao City's high-quality development of marine economy. The results showed that innovation-driven, green development and people's livelihood were important supporting forces for the high-quality development of Qingdao City's marine economy. Open development and comprehensive quality and efficiency played an important driving role for the high-quality development of Qingdao City's marine economy. Coordinated development was the main problem facing the high-quality development of Qingdao City's marine economy in recent years. Finally, countermeasures and suggestions to promote the high-quality development of Qingdao City's marine economy were further discussed and put forward.

The ocean is a high-quality development strategy critically, promoting economic high-quality development in the ocean is an inevitable choice for building marine powerhouses. In this paper, from the connotation of high-quality marine economic development, based on a new development concept, the entropy weight TOPSIS model was used to evaluate the comprehensive ability of the quality of marine economic development in coastal regions and analyze their regional differences. The empirical results showed that: (1) the top five guideline layer indicators were ranked in order of weight from highest to lowest are: marine science and technology innovation > opening up to the outside > marine economic structure > social welfare > marine ecological environment; (2) The fluctuating and rising level of high-quality development of sea economic in coastal regions during the study period, and the gap in sea economic development quality between provinces (autonomous regions, municipalities) became gradually smaller; (3) Affecting the quality of marine economic development in each subsystem, the northern marine economic circle was at a low level in each of the five subsystem scores. The promotion path for promoting high-quality development of marine economies was proposed: Marine science and technology innovation and marine industry structure upgrade should be developed synergistically, marine ecological and environmental protection policies should be improved, and new patterns should be created to open up.

[Objective] While China’s marine economy has maintained a stable development, there still exist problems of unbalanced, uncoordinated, and unsustainable development. Therefore, it is of great significance to scientifically measure the green total factor productivity (GTFP) of China’s marine economy and conduct in-depth research and analysis of its spatial heterogeneity based on a multidimensional perspective, so as to promote the spatial expansion of blue economy under the land-sea integrated development strategy. [Methods] In this study, the non-radial directionality function model of global reference and the global Malmquist-Luenberger index were used to measure the green total factor productivity of China’s marine economy from 2007 to 2018. Then from the two dimensions of time and space, spatial heterogeneity was examined by using the Dagum Gini coefficient, Kernel density method, and Markov chain method, and α convergence and β convergence tests were used to explore its convergence. [Results] The results show that: (1) From 2007 to 2018, the GTFP of marine economy in all coastal provinces and cities in China had improved, showing obvious regional characteristics and significant spatial imbalance. (2) The overall spatial differences of GTFP in China’s marine economy showed an upward trend and fluctuated with an increasing-decreasing-increasing pattern. (3) Temporally, China’s marine economy GTFP had steadily improved, showing the characteristics of gradual development with a two-level differentiation that first intensified and then improved, and the spatial heterogeneity had changed significantly. (4) In the whole country and the three major marine economic zones, GTFP showed phased convergence and divergence characteristics, diverging in the 11th Five-Year Plan and the 13th Five-Year Plan periods and converging in the 12th Five-Year Plan period; The GTFP of the marine economy in the three major marine economic zones showed absolute convergence, but there was no significant absolute convergence in the country as a whole; The GTFP of the marine economy showed conditional convergence in the whole country and the three major marine economic zones, with the eastern marine economic zone having the fastest convergence speed, followed by the north and the south. [Conclusion] This paper argues that during the 14th Five-Year Plan period, we should focus on optimizing the spatial layout of the green development of China’s marine economy and promoting the coordinated and sustainable development of regional marine economy.

Based on the data of China's 11 coastal provinces from 2006 to 2018, this paper synthesized the government-led and market-driven environmental regulations, and used entropy weight method to get the intensity of marine environmental regulations. Combined with SBM model and Malmquist-Luenberger index, the green total factor productivity of marine economy in coastal provinces was measured. On this basis, it empirically analyzed the influence of environmental regulation on the green total factor productivity of marine economy, and tested the mediating effect of technological innovation. The results showed that environmental regulation could promote the growth of green total factor productivity of marine economy, but there was heterogeneity between coastal provinces south and north of the Yangtze River. Environmental regulation could affect the green total factor productivity of marine economy by affecting the input and output of marine science and technology innovation. Finally, this paper put forward policy suggestions to promote the green development of marine economy from two aspects: deepening the reform of environmental regulation and strengthening technological innovation.

The marine power strategy and the "14th Five-Year Plan" have put forward high-quality development requirements for the development of China's marine economy. Starting from the general situation of China's marine economic development, this paper used the integrated data of marine economic development in the Bohai Rim region, the Yangtze River Delta region and the Pearl River Delta, and used Cite Space to analyze the visualization results, thereby clarifying several influencing factors of China's marine economic development and constructing a comprehensive evaluation system for the development level of China's marine economy. Based on this, this paper empirically tested the influence of such factors on the development of China's marine economy by further establishing a fixed effect model. The empirical results showed that there was a synergistic effect between the regional economic development level and industrial development and the development of China's marine economy, while the lack of infrastructure construction and the difference in the level of urbanization had produced certain constraints on the development of marine economy. The paper also analyzed the shortcomings and prospects of China's marine economic development, to provide targeted policy suggestions for China's marine economic development.

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Marine fungi are important sources of new metabolites including certain enzymes of medical interest due to their enormous capacity to adapt themselves to extreme environments. Living in a highly competitive ecological niche, they produce certain unusual chemical moieties. Marine biological resources are green, abundant, renewable and aid in economic development. The present study investigates the production of L-Glutaminase which is of therapeutic and industrial importance, from marine fungi of coastal Karnataka. Primary screening on agar plates and submerged fermentation in broth was employed for enzyme production. Both marine yeasts (Pichia sp) and filamentous fungal strains (Aspergillus, Penicillium) were found to be efficient producers of L-Glutaminase. Of the 42 isolates, five potential strains were selected through primary screening and Thin Layer Chromatography was performed to confirm the production. Filamentous fungi were identified through morphological and molecular methods as Penicillium and Aspergillus strains with 99-100% similarity. A. foveolatus (MT667385)and A. nidulans (MT667422) were potential producers (1.58U/ml and 1.41IU/ml). The yeast identified was Pichia kudriavzevii (MT667428), which was a moderate producer of Glutaminase and first marine yeast reported for this enzyme production. Neosartorya quadricincta (MT667427) and P. citrinum (MT667426) are also moderate producers. After screening the marine fungi, the isolated strains’ potential to produce L-Glutaminase was confirmed using SDS PAGE, FTIR and Mass analysis. This study emphasizes the necessity of marine fungal culturing and the scope of use of these fungi for further commercial production of L-Glutaminase which would uplift marine economy. [ABSTRACT FROM AUTHOR]

The ocean plays a crucial role in human society's survival and development. While China's marine economy has grown rapidly in recent years, it has also led to serious problems inhibiting ecosystem sustainability. This paper proposes high-quality development of the marine economy and combines the improved entropy value method, fuzzy hierarchical analysis method (FAHP), and data envelopment analysis (DEA) method to establish a quadratic relative evaluation model. A two-layer comprehensive index framework with 19 indicators is built to measure various aspects of the marine economy, including innovation, coordination, green, openness, and sharing. Empirical analysis conducted on 11 coastal provinces in China using data mainly collected from the Chinese Statistical Yearbook reveals significant spatial patchiness in the high-quality development level of the marine economy. This discrepancy is largely due to differences in geographical locations, resources, and government policies. The study analyzes four benchmark provinces of high-quality development and summarizes their experiences. The paper concludes by providing suggestions and implications to support government decision-making. [ABSTRACT FROM AUTHOR]