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Copyright of China Pulp & Paper is the property of China Pulp & Paper Magazines Publisher 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.)

Copyright of China Pulp & Paper is the property of China Pulp & Paper Magazines Publisher 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.)

Copyright of China Pulp & Paper is the property of China Pulp & Paper Magazines Publisher 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.)

Copyright of China Pulp & Paper is the property of China Pulp & Paper Magazines Publisher 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.)

Copyright of China Population Resources & Environment is the property of Shandong Normal University 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.)

[Objective] The problems of excessive CO2 emission, the greenhouse effect, and energy shortage have been widely discussed among countries worldwide. Electrocatalytic CO2 reduction reaction (ECO2RR) can realize the conversion of CO2 into value-added chemical fuel under mild conditions and the storage of renewable electricity, which is an effective way to promote China's aim of carbon peak and carbon neutrality. To pursue higher catalytic activity and product selectivity, researchers are committed to developing highly efficient ECO2RR electrocatalysts. In this paper, we designed Mo2CO2 MXene-based single-atom catalysts (SACs) (TM@Mo2CO2-Ov, TM = Fe, Co, Ni) according to the needs of ECO2RR, focusing on their electronic structure, catalytic performance, as well as reaction mechanism through theoretical simulation of the electrocatalytic process. [Methods] In this work, the CIF file of the Mo2CO2 MXene structure downloaded from the crystal structure database was first imported into the Materials Studio software. Then, the (110) crystal plane was cleaved, and a vacuum layer of 15 A was created. Afterward, a 3 x 3 supercell treatment was applied to the system. Next, the VASP software was utilized to perform structure optimization. After the Mo2CO2 structure was optimized, a vacancy site for an oxygen atom on the surface was constructed. Subsequently, the Fe, Co, and Ni metal atoms were introduced into the respective vacancy sites to create the Fe@Mo2CO2-Ov, Co@Mo2CO2-Ov, and Ni@Mo2CO2-Ov catalyst models, respectively. Finally, the VASP software was employed to optimize the catalyst structures and the adsorption structures of the reaction intermediates. The performance evaluation of ECO2RR on different SACs was obtained by studying the reaction mechanism of the production of C products (CO, HCOOH, CH3OH, and CH4). The free energy of ECO2RR was calculated using the computational hydrogen electrode mode, wherein the energy of (H+ + e-) remained equivalent to that of 1/2H2 at normal pressure and temperature. [Results] The calculated results showed the following: 1) In the Mo2CO2-Ov framework, single Fe, Co, and Ni atoms replaced the Mo atom at the center of the O defect. After structural optimization, it was found that these three structures did not change significantly, and the bond lengths only changed slightly. 2) The CO2 molecule was stably adsorbed on Fe@Mo2CO2-Ov, Co@Mo2CO2-Ov, and Ni@Mo2CO2-Ov via chemisorption. The structures of CO2 were significantly bent after adsorption, and the calculated absolute values of the interaction exceeded four. The DOS analysis showed that the occupation of d orbitals of Ni, Co, and Fe led to the adsorption difference. The d orbitals of Co and Fe were hybridized with the ng and nM* orbitals of CO2, which promoted the adsorption and activation of CO2. 3) The ECO2RR free energy diagram and reaction path analysis showed that Co@Mo2CO2-Ov had higher ECO2RR activity and better CH4 selectivity and was a better electrocatalyst for the formation of C1 products from ECO2RR than Fe@Mo2CO2-Ov and Ni@Mo2CO2-Ov. [Conclusions] By integrating the geometrical analysis, DOS calculation, and free energy analysis, Co@Mo2CO2-Ov was established as the ideal ECO2RR catalyst. The work can achieve the expected goal of significantly enhancing the ECO2RR performance and improving students' scientific research literacy to explore micromechanisms and processes through the extension of the experimental process. [ABSTRACT FROM AUTHOR]

Southwest China is one of the three largest continuous karst clusters in the world; therefore, studies on karst rocky desertification in this area are very important. For more than 20 years' control, the decreasing area and risk of karst rocky desertification has contributed to the continuous ecological improvement. Nowadays, studies on rocky desertification mainly focus on the eight provinces in Southwest China, which have been designated as rocky desertification monitoring areas by the Chinese government. After the first phase of the comprehensive control project for karst rocky desertification in 2016, the expansion trend of rocky desertification in the southwest region was effectively curbed. Subsequent articles published tend to focus on analyzing the current situation, comprehensive management, or species adaptability of rocky desertification monitoring areas. However, the Qinba region in Shaanxi Province is located outside the monitoring area. In the process of studying the karst geological relics of the Zhenba Sanyuan Tiankeng Group, signs of rocky desertification have been found, but there still exists a research gap in the investigation and research on karst rocky desertification in this area which is one of the areas with the richest biodiversity in China, known as "ecological lung", "central water tower" and "biological gene bank". Unfortunately, this area is burdened with poverty, so the investigation and study of karst rocky desertification in the Qinba region of Shaanxi Province is of great significance to ensure green and high-quality development and ecological civilization construction. In this paper, by analyzing the current situation of karst rocky desertification in Southwest China, we summarized its harm to the ecological environment and social economy, clarify natural and human factors resulting in rocky desertification, and integrate the typical treatment experience in Southwest China. We also introduce three technical methods, including remote sensing interpretation, UAV remote sensing survey and analysis of carbonate dissolution rate, to provide a scientific basis for studies on karst rocky desertification in the Qinba region of Shaanxi Province. Study results show that the area of karst rocky desertification in the Qinba region covers 63.37 km², and the areas of severe, moderate and mild rocky desertification cover 17.97 km², 21.60 km² and 23.80 km², respectively. Based on the survey results, there are both regional differences and some similarities in distribution patterns in the areas of rocky desertification development. Specifically, the degree of rocky desertification in the limestone area is more severe than that in the dolomite area. It is also more severe in the area with developed water system than that in the arid and semi-arid area, and the more active the new structure is, the more severe the rocky desertification is. Compared to the Southwest China, the degree of karst rocky desertification in the Qinba region of Shaanxi Province is relatively light, with a smaller distribution area, mainly due to the less rainfall in the study area. The karst rocky desertification in Beiyang mountain of Zhen'an county is the most severe, with an area of 7.28 km². In the 1960s, a large-scale free-range of livestock severely damaged vegetation. The indiscriminate deforestation by humans further exacerbated the process of rocky desertification. The rocky desertification in Hailuogong village of Shanyang county is also severe, covering an area of 5.83 km², because the landform in this area is a typical peak-cluster depression, which is likely developed into rocky desertification. The contradiction between people and land needs to be solved urgently. In conclusion, more monitoring and research efforts are needed in Beiyang mountain and Hailuogong where the rocky desertification is severe. Firstly, we should clarify the causes of rocky desertification in the Qinba region and compare them with the causes in Southwest China to determine whether the rocky desertification is mainly resulted from natural factors or human factors. Secondly, we should know how to clarify the causes of karst rocky desertification in the Qinba region; for example, we can dynamically monitor the change of rock desertification by field verification, remote sensing interpretation, climate change analysis, etc. We can also calculate the contribution rate of each influence factor by geographical detector model. Thirdly, we should further study influence factors of karst dissolution rate. We can monitor physical and chemical properties of soil (soil moisture, carbon dioxide concentration, pH, organic matter content and porosity) in areas with moderate to severe rocky desertification, and analyze the relationship between dissolution rate and physical and chemical properties of soil in rocky desertification areas. Finally, in order to provide basic data for carbon neutrality research in Shaanxi, we should conduct studies on the carbon sink of rocky desertification areas in the Qinba region, with the methods such as dissolution test pieces and hydrochemical runoff. [ABSTRACT FROM AUTHOR]

Copyright of China Population Resources & Environment is the property of Shandong Normal University 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.)

Carbon capture, utilization, and storage (CCUS) technology is a vital technical path to realize the low-carbon transformation of the coal power industry as well as a key means to ensure the safe and stable operation of the future power system. However, the current development path of coupling coal power and CCUS technology is not clear, and there is room for the optimization of the corresponding policy mechanism. This paper quantitatively estimates the contribution of CCUS application in the coal power industry to China's low-carbon energy transition strategy, describes the future development path of coal power's CCUS industrialization from the spatio-temporal dimension, and further constructs a comprehensive supporting policy system framework. The results show that the development of coupling coal power and CCUS technology is technically and economically feasible, which can not only achieve deep decarbon-ization of the power system and bring significant output and employment dividends in the coal power industry, but also effectively control the average carbon price level of society. In terms of the temporal dimension, the development path of coal power's CCUS industrialization in the future should be divided into three stages: technology research, development, and demonstration (2021--2030), large-scale application (2030--2040), and commercial development (2040--2060). In terms of the spatial dimension, the technically and economically feasible regions for cluster development are the Ordos Basin, the Junggar Basin, the Bohai Bay Basin, etc. Constructing a comprehensive policy support system framework incorporating ' macro support, fiscal and tax finance, market mechanism, technology research, development, and demonstration, as well as management system' is conducive to realizing a large-scale CCUS application in the coal power industry. In the stage of technology research, development, and demonstration of coal power's CCUS application, more definitive incentive policies such as storage subsidies, compensation for power generation hours, and feed-in tariff subsidies should be implemented. When the project cost drops to a certain extent, there should be a gradual transition to market-based policy tools such as carbon trading and green electricity trading mechanisms, and green finance should also be promoted. Based on the relevant conclusions, some targeted policy suggestions are put forward to provide references for promoting the green and low-carbon transformation of China's coal power industry. [ABSTRACT FROM AUTHOR]

Wind energy is an important clean energy, according to China's carbon peak and carbon neutral strategy, the policy of replacing small with large wind turbine blades and replacing old with new is imperative. The main material of wind turbine blades is glass fiber reinforced polymer, which has problems of difficult recycling technology and high recycling cost. Nowadays, there is no ideal large-scale recycling method. Therefore, the systematic and high-value utilization of waste wind turbine blades is imminent. In this paper, the material type, recycling methods and their respective characteristics of wind turbine blades are summarized. The recent developments of waste wind turbine blades in cement-based materials and thermoplastic polymer materials are thoroughly discussed. Overall, this paper can provide reference for the subsequent development and research on the recycling waste wind turbine blades. [ABSTRACT FROM AUTHOR]

Copyright of China Rural Water & Hydropower is the property of China Rural Water & Hydropower 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.)

Copyright of Petroleum Geology & Recovery Efficiency is the property of Petroleum Geology & Recovery Efficiency 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.)

Copyright of Petroleum Geology & Recovery Efficiency is the property of Petroleum Geology & Recovery Efficiency 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.)

Copyright of China Population Resources & Environment is the property of Shandong Normal University 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.)

Copyright of South Architecture / Nanfang Jianzhu is the property of South Architecture 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.)

Copyright of Journal of Engineering Management / Gongcheng Guanli Xuebao is the property of Journal of Engineering Management 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.)

Copyright of China Population Resources & Environment is the property of Shandong Normal University 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.)

Copyright of China Population Resources & Environment is the property of Shandong Normal University 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.)

Copyright of Natural Gas Industry is the property of Natural Gas Industry Journal Agency 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.)

Copyright of Science & Technology of Cereals, Oils & Foods is the property of Science & Technology of Cereals, Oils & Foods 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.)

Copyright of Natural Gas Industry is the property of Natural Gas Industry Journal Agency 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.)

Copyright of Natural Gas Industry is the property of Natural Gas Industry Journal Agency 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.)

Assuming responsibility for emission reduction is an important part of participating in the global governance of climate change. Countries with a carbon neutrality target now cover about 75% of global greenhouse gas emissions. Carrying out fairness evaluations of their carbon neutrality targets provide a strong basis for the global carbon inventory. In this paper, the target years of carbon neutrality for major countries and regions under the global target of 2 °C and 1.5 °C are studied using the burden sharing model. On this basis, this paper simulates the possible pathways of carbon neutrality and evaluates the ambition of emission reduction targets in terms of annual emission reduction, per capita emission, and cumulative per capita emission. The results show that, from the perspective of equity, most of the developing countries cannot meet the global goal of 1.5 °C. The United States and the European Union nations could achieve carbon neutrality by 2050 by continuing their annual emission reductions under their existing NDC targets. However, to achieve carbon neutrality by 2060, China's annual emission reduction rate from 2030 to 2050 will be 6.7%, and the annual amount of emission reduction accounts for 51% of the global amount under the 1.5 °C target. Meanwhile, China would become the main force behind global cumulative emissions in the following decades. Thus, the emission reduction pathways China chooses will have an important impact on global climate mitigation progress. Based on the above research conclusions, this paper proposes that developed countries and developing countries should explore bilateral or multilateral cooperation in technology and finance in the field of climate change. Under the great pressure to achieve carbon neutrality, China needs to carry out research on the overall emission reduction pathways as soon as possible and clarify the paths at the scale of sectors, industries, provinces, and time stages. [ABSTRACT FROM AUTHOR]

Copyright of China Harbour Engineering is the property of Editorial Office of China Harbour Engineering 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.)

Copyright of Journal of South China University of Technology (Natural Science Edition) is the property of South China University of Technology 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.)

The low-carbon city pilot policy is an important way to promote corporate green innovation, and it is also an inevitable choice to achieve the goals of achieving peak carbon emissions and carbon neutrality. However, existing research on the impact of the low-carbon city pilot policy on green innovation lacks depth, and literature focusing on micro-corporate level is insufficient. Therefore, it is difficult to provide an effective reference for corporate green transformation. Based on the panel data of 936 A-share listed companies in China from 2007 to 2020, this paper took the low-carbon city pilot policy as a quasi-natural experiment. The multistage dynamic difference-in-differences model and difference-in-difference-in-differences model were used to explore the impact of the low-carbon city pilot policy on corporate green innovation and its heterogeneity in terms of enterprise size, property rights, and carbon emission industry. Furthermore, from the perspective of environmental responsibility and talent agglomeration, this paper discussed the transmission mechanism of this policy to promote corporate green innovation and determined the optimal path for the low-carbon city pilot policy to take. The research results showed that: ① The low-carbon city pilot policy effectively promoted corporate green innovation in the pilot areas. Compared with the green utility model patent innovation, the pilot policy had a more significant impact on green invention patent innovation. A series of robustness tests such as PSM-DID and the placebo test found that the conclusion was still valid. ② The impact of the low-carbon city pilot policy on green innovation presented heterogeneity in terms of enterprise size, property rights, and carbon emission industry. This policy had a more significant policy impact on large-scale enterprises, and only had a positive impact on the utility model patent of state-owned enterprises but had a significant positive impact on the green innovation of non-state-owned enterprises to varying degrees. The low-carbon city pilot policy had a significant positive impact on the green innovation of enterprises in high-carbon industries but had a certain inhibitory effect on the green innovation of enterprises in low-carbon industries. ③ The main transmission mechanism of the low-carbon city pilot policy on the promotion of corporate green innovation was that the pilot policy enhanced the awareness of the environmental responsibility of enterprises by strengthening their management of environmental information disclosure, improving the level of their environmental protection investment, providing government support for their environmental protection, and inducing the effect of talent agglomeration by attracting talented people seeking employment and those who graduated from local universities as well as high-tech talents from enterprises. From the perspective of the transmission path effect, environmental responsibility played a greater role, followed by talent agglomeration. Therefore, the government should keep on expanding the scope of the lowcarbon pilot policy, give more financial and policy support to small and medium-sized technological private enterprises and green environmental protection enterprises, promote the shareholding system reform, mergers, and reorganization of state-owned enterprises, and provide sustainable environmental regulation and assistance to high-carbon emission enterprises. They should also continuously enhance enterprises' environmental responsibility awareness and promote the effect of talent agglomeration to improve the level of green innovation. [ABSTRACT FROM AUTHOR]

Copyright of China Population Resources & Environment is the property of Shandong Normal University 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.)

Copyright of Industrial Minerals & Processing / Huagong Kuangwu yu Jiagong is the property of Industrial Minerals & Processing 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.)

Copyright of South Architecture / Nanfang Jianzhu is the property of South Architecture 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.)

Copyright of China Population Resources & Environment is the property of Shandong Normal University 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.)

Copyright of Oil Drilling & Production Technology / Shiyou Zuancai Gongyi is the property of Shiyou Zuancai Gongyi Bianjibu 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.)

Copyright of Natural Gas Industry is the property of Natural Gas Industry Journal Agency 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.)

With the gradual implementation of strategies to achieve the goals of reaching peak carbon emissions and carbon neutrality, the heterogeneous performance of low-carbon technological progress driving carbon emission reduction in different situations has become an important basis for targeted technological carbon reduction. As an important special subject of national energy resource security and carbon emission reduction, whether resource-based cities can reach peak carbon emissions simultaneously is a key to the achievement of the ' dual carbon' goals. This paper reviewed the theoretical literature on low-carbon technology progress and carbon emissions in resource-based cities, and extracted the their driving mechanisms. Based on the panel data of 116 prefecture-level resource-based cities in China from 2005 to 2019, this paper innovatively considered six undesirable outputs with resource-based city characteristics to define the low-carbon technological progress of such cities, and used the DEA-Malmquist index model, STIRPAT model, and threshold model to clarify the current situation of low-carbon technological progress and carbon emissions in resource-based cities. The study also carried out a deep analysis of the driving relationship and threshold effect between low-carbon technological progress and carbon emission reduction, and compared and analyzed their multiple heterogeneity. The study found that during the sample period, the low-carbon technology progress of these 116 prefecture-level resource-based cities showed a phased upward trend, and that carbon emissions had obvious regional heterogeneity and type heterogeneity. The progress of low-carbon technology in resource-based cities had a certain inhibitory effect on carbon emissions and presented type heterogeneity, regional heterogeneity, and a double threshold effect. In different threshold ranges, the driving effects of low-carbon technology on carbon emission reduction effect and carbon emission reduction rebound effect were different. The driving effects of other seven control variables, such as gross domestic product, command-based environmental regulation, market-based environmental regulation, voluntary environmental regulation, industrial structure, energy consumption structure, and foreign direct investment, on carbon emissions were also different. Finally, based on the research conclusions, regarding different regional resource-based cities, different types of resource-based cities, and different levels of low-carbon technology progress in resource-based cities, policy recommendations related to low-carbon technology progress and carbon emission reduction are proposed in a targeted manner, aiming to promote the improvement of low-carbon technology progress in resource-based cities and the simultaneous achievement of carbon emission reduction targets. [ABSTRACT FROM AUTHOR]

Under the background of the global value chain (GVC) crisis caused by the COVID-19 pandemic and the Russia-Ukraine conflict, using methods of risk analysis of input-output table and geopolitical deduction, and based on the latest datasets of carbon dioxide emissions and the world energy trade, this paper analyzes the global value chain risks and energy security issues from three dimensions: climate governance dilemma, the global value chain crisis, and energy security and energy transition. It then presumes changes in world energy trade and geopolitical evolution and assesses their impact on China. The main findings and viewpoints of this paper are as follows: (1) The brokage, fragmentation, cutoff, and even production stoppage of the global value chain have done huge damage to the world economy, and it is urgent to rebuild a safe, stable, resilient, and green global value chain in the post-COVID-19 era. (2) Due to the Russia-Ukraine conflict, the flow direction and volume of the world' s energy trade have changed greatly, and the energy supply chain has gradually formulated into five formulas: the ' Europe-U.S. supply chain,' the ' Eurasian supply chain,' the ' U.S., Japan, Australia, and India supply chain,' the ' OPEC supply chain,' and a ' new Europe supply chain.' Among them, the United States has increased rapidly its LNG exports to Europe, and Russia has significantly increased its energy exports to Asian countries, inducing a new ' Eurasian energy supply chain.' (3) The world' s energy geopolitics is evolving in such a way that the United States is strengthening its grip on Europe to jointly restrain Russia' s power and initiating a Asia-Pacific ' four-sided mechanism' to counter China' s rise. Consequently, energy security has been bound to geopolitics. (4) China should act as a geopolitical ' power of equilibrium' to avoid the increasing risk of a new Cold War or a ' quasi-Cold War' to ensure its own energy security, to promote its dual goals of reaching peak carbon emissions and achieving carbon neutrality actively and gradually, and to steadily follow the path of peaceful development. We conclude that: the ' dual carbon' goals set up a timetable for China' s transitions in terms of energy, economy, and development mode. At the same time, the strategy of 'decoupling with China' promoted by some countries gives China an opportunity instead and forces China to accelerate its industrial transition, trade upgrading, and optimization of economic structure, in order to build an upgraded version of the ' world factory' and fully realize a high-quality, green, sustainable development with a goal of achieving net-zero carbon emissions. [ABSTRACT FROM AUTHOR]

The impact of climate warming on world agricultural production and food security has become increasingly obvious. As an important source of carbon emissions and the carbon sink system, the green development of agriculture is one of the important ways to alleviate the crisis and achieve China' s goals of reaching peak carbon emissions and carbon neutrality. Exploiting the potential of agricultural carbon sinks and accurately calculating agricultural net carbon emissions are of great significance to promoting the green development of agriculture meeting the ' dual carbon' goals. Based on the dual characteristics of the agricultural carbon cycle, this paper sorted out the logical relationship between agricultural green development and the agricultural carbon cycle, incorporated the role of agricultural carbon sinks into the calculation framework of agricultural carbon emissions, and measured China' s agricultural net carbon emissions from 2000 to 2019 by time and region. The decoupling model of agricultural net carbon emissions from agricultural economic growth was constructed. The results of the study found that the total amount of carbon emissions from agricultural sources increased from 277.899 million t in 2000 to 308.383 1 million t in 2019, with an average annual growth rate of 0.52%, but the agricultural carbon emission intensity showed a trend of continuous decline; the agricultural carbon sink increased from 99.539 9 million t in 2000 to 133.039 million t in 2019, with an average annual growth rate of 1.46%, and the agricultural carbon sink resources were considerable. The intensity of agricultural carbon source emissions was higher in the west than in other regions and there was a clear gap with the eastern region. The total amount of agricultural carbon source emissions, carbon sinks, and net carbon emissions all showed a medium-high pattern. The decoupling relationship between agricultural economic growth and agricultural net carbon emissions was mainly manifested in two decoupling states: strong decoupling and weak decoupling. Nearly 50% of the provinces achieved the ideal strong decoupling state in terms of agricultural green development, while the remaining provinces were in a weak decoupling state, and the decoupling state was generally ideal. Finally, this paper puts forward targeted countermeasures and suggestions to promote the green development of agriculture and help achieve the ' dual carbon' goals: we should accurately locate the carbon source; ensure the ' double bottom line' of food security and pig production capacity under low-carbon agriculture; resolve the resource endowment differences between regions; explore the potential of the agricultural carbon trading market; create a new path for farmers to increase their income, maintain the strong and improve the weak; and strive to achieve the ' package' of strong decoupling in agriculture to help achieve the ' dual carbon' goals. [ABSTRACT FROM AUTHOR]

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New urbanization plays an important role in China's regional economic growth and green transformation. In this stage of high-quality economic development, the effect of the government-led new urbanization policy on reducing pollution and carbon emissions needs to be verified. Based on the data of 180 prefecture-level cities in China from 2004 to 2020, this paper built a difference-indifferences model from the two dimensions of ' pollution' and ' carbon emission' to empirically test the effect of the reduction of pollution and carbon emissions in new urbanization and its influencing mechanisms. The results showed that: (J) The new urbanization construction had a significant effect of reducing pollution and carbon emissions, which was characterized by its annual increase. The conclusion was still robust after validity and robustness tests. © Based on the ' location-feature-scale' dimensional urban heterogeneity, the effect of the reduction of pollution and carbon emissions was more significant in the samples of eastern cities, non-resource-based cities, cities with high human capital, and larger cities. Quantile estimation results showed that this effect in the new urbanization construction was increasing marginally. © Mechanism analysis showed that the new urbanization construction could not only directly promote the reduction of pollution and carbon emissions, but also effectively promote this reduction by fostering the overall upgrading of industrial structure, service structure, and performance-based technological innovation. However, the impact of input-based technological innovation on this reduction was not obvious. This article offers new ideas for the next stage of regional pollution control in China. It is suggested that the government should promote the synergy between the new urbanization and the reduction of pollution and carbon emissions and release the dividends of the new urbanization in regional green development in a more effective way with the help of industrial structure upgrading and performance-based technological innovation. [ABSTRACT FROM AUTHOR]

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Copyright of Journal of Technology Economics is the property of Chinese Society of Technology Economics 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.)

Copyright of Architectural Journal / Jian Zhu Xue Bao is the property of Architectural Journal 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.)

Copyright of China Population Resources & Environment is the property of Shandong Normal University 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.)

Copyright of Natural Gas Industry is the property of Natural Gas Industry Journal Agency 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.)

Copyright of Experimental Technology & Management is the property of Experimental Technology & Management 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.)

China’s marine environment has enormous volumes of oil and gas (O＆G) resources and immense “blue carbon” potential. In the 14th Five-Year Plan, developing the marine economy, using marine resources, and protecting the marine ecological environment are one of China’s important socioeconomic development goals. However, the relationship between the exploitation of offshore O＆G resources, the protection of the marine ecosystem, and the goal of carbon peak and carbon neutrality has not been fully elucidated. This study expounds on the importance and vulnerability of marine ecosystems. Then it combines the status of offshore O＆G exploration and exploitation to present a conceptual model of offshore O＆G-ecology carbon feedback cycle, the pathway of deep connection, and the necessity of synergic development in carbon neutrality process. This paper advocates strategies such as closer combination of marine protection with offshore O＆G design and development, evaluating the carbon budget in the regional ecological assessment and developing low-carbon green oilfield materials to improve the sustainable development and utilization scheme of marine resources. This study aims to provide scientific and theoretical support for relevant institutions and promote in-depth collaboration across marine departments. [ABSTRACT FROM AUTHOR]

With the development of China's society and economy, the demand for the construction of cross-sea channel project is becoming more and more urgent, especially the Bohai Strait Channel Project, which has attracted wide attention from all parties in recent years. In order to promote the construction of the Bohai Strait Channel Project, this paper summarized the research results of the Bohai Strait Channel over the years, analyzed the necessity and feasibility of the Bohai Strait Channel construction, studied the construction of the Bohai Strait Channel. Conclusion: (1) The Bohai Strait Channel is an important part of the north-south coastal corridor in China's comprehensive three-dimensional transportation network planning. It can save more than 1 million tons of fuel oil and reduce carbon emissions by more than 8 million tons of carbon oil every year. The construction of the Bohai Strait Channel project is necessary for energy conservation and emission reduction and optimizing the regional spatial layout; (2) In recent years, China has developed rapidly in the field of transportation infrastructure construction, and has the technical and equipment conditions for the construction of the Bohai Strait channel; (3) It is suggested to adopt the construction of railway channel in advance, reserve the highway channel scheme, and adopt passenger and freight mixed transportation. The speed target value of passenger cars is 250 km/h, and the traction mass of trucks is 5 000 t; (4) It is suggested to use the tunnel through the Bohai Strait and use the roadmachine method for construction. [ABSTRACT FROM AUTHOR]

(1) Background—Since the pilot of the central financial forest insurance premium subsidy in 2009, China's forest insurance system has been established gradually, policies have been improved continuously, the scale of insurance ranks first in the world and has got the basis for high-quality development. In 2019, the state issued the Guidance on Accelerating the High-Quality Development of Agricultural Insurance, which includes many aspects of forest insurance and puts forward new requirements for the high-quality development of forest insurance. (2) Methods—Reference to the connotation of high-quality development of agricultural insurance, this paper explores the connotation of high-quality development of forest insurance. Through the data provided by the China Forest Insurance Development Report and relevant government departments and insurance institutions, this paper analyzes the development of forest insurance in China and some typical pilot areas, and explores the bottlenecks and causes of high-quality development of forest insurance. (3) Results—The connotation of high-quality development of forest insurance includes five aspects: wider coverage of insurance, higher level of risk protection, better product and service, more efficient financial subsidies, and sustainable business development. In-depth analysis of these five aspects, this paper showed that some unbalanced and inadequate development problems have become the main bottleneck restricting the high-quality development of forest insurance. First, taking the data of 2019 as an example, the forest insurance participation rate in the pilot area reached 79. 86 %, which was difficult to further improve. Second, the national average unit insurance is only 9,600 yuan • hm-2, which is lower than the afforestation cost of 30,000 yuan • hm-2. Third, the national average compensation rate from 2014 to 2019 was only 30.49 per cent, which is a low rate. Forth, pricing is not scientific enough, lack of risk zoning and dynamic adjustment. In addition, the innovation of insurance product has not been effectively promoted, unable to meet the needs of market diversity. Lastly, the financial subsidy mechanism is not perfect. Some grassroots governments have great financial pressure, and the incentive effect has not been fully exerted. (4) Conclusions and Discussions—When entering the stage of high-quality development, forest insurance should reach a higher level through a variety of optimization paths while expanding the coverage. First, it is necessary to change from "insurance cost" to "insurance value", improve the level of protection and enhance the attractiveness of insurance. And it is expected for the government to provide strong supports for innovative types of insurance, develop and promote new types of insurance around the target of emission peak and carbon neutrality in order to meet the diverse needs of the market. Second, risk zoning should be refined according to geographical location, climatic conditions, traffic conditions, risk characteristics and other factors. And differential rates should be formulated according to forestry characteristics such as forest species and tree species, so as to provide more choices for forestry operators through the form of "main insurance + additional insurance". Third, it is necessary to promote the digital reform, realize the whole process digitization of insurance plan formulation, rate determination and underwriting claims, and improve the management service level and compensation efficiency. Forth, It is supposed for the government to improve the financial subsidy mechanism, expand the scale of subsidies, optimize the subsidy structure, expand the subsidy method, and give full play to the incentive effect of financial funds. Through the above measures, it will be better meet the diversified needs of forestry operators, consolidate the sustainable management foundation of insurance institutions, reduce the pressure of grassroots government departments, effectively improve the enthusiasm of all parties to participate in forest insurance, and ultimately promote the high-quality development of forest insurance. [ABSTRACT FROM AUTHOR]

Carbon emissions trading is a market-based environmental regulation tool to promote low-carbon technology innovation and reduce the cost of carbon emissions. This research selects the low-carbon patent quantity indicators of 30 provinces from 2010-2017 to analyze the spatial clustering of low-carbon technology innovation in China by using spatial correlation coefficients and natural break-point method. In order to test the impact of China's carbon emission trading policy on low-carbon technology innovation, this research uses pilots in seven regions as a quasi-natural experiment of carbon emission trading through DID model. The results show that there has been a significant spatial agglomeration effect in the east-central region, and the establishment of carbon emission trading pilots significantly promotes the regional level of low-carbon technology innovation. Based on the findings, this paper suggests that China should continue to improve the national carbon market, expand the industry coverage of the pilot carbon market, give full play to the role of the carbon emissions trading market in promoting low-carbon technology innovation, and strengthen regional synergistic development to enhance the spatial spillover effect of low-carbon innovation technologies and help achieve the goal of carbon peaking and carbon neutrality. [ABSTRACT FROM AUTHOR]

Copyright of Natural Gas Industry is the property of Natural Gas Industry Journal Agency 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.)

Copyright of Natural Gas Industry is the property of Natural Gas Industry Journal Agency 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.)