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In 2020, China's poverty alleviation has made decisive achievements, and the regional overall poverty problem and the absolute poverty problem of the rural population in China have been basically solved. But when the national poverty alleviation policy is optimized and adjusted, enhancing the endogenous sustainable development capacity of poverty-stricken areas and households has become the focus of consolidating the achievements of poverty alleviation and comprehensively promoting rural revitalization. Livelihood resilience, which focuses specifically on the ability of individuals to withstand external shocks and disturbances with their own capital, is a necessary attribute for achieving sustainable development. However, previous studies paid less attention to the disturbance of social factors and the driving effect of social environmental factors on the construction of livelihood resilience. Using 518 farmer survey data from Shaanxi Province, this paper explores the mechanism by which farmers individual capital affects their livelihood resilience through ICT adoption. Statistical analysis shows that social networks are the most important factor for farmers to resist risks and develop sustainably. The empirical study finds that farmers' individual capital and ICT adoption are important variables in the construction of farmers' livelihood resilience. Specifically, the more individual capital farmers possess, the more likely they are to have higher levels of livelihood resilience. The higher the level of ICT adoption by farmers. the more they tend to have higher levels of livelihood resilience. At the same time, the impact mechanism of farmers' individual capital and ICT adoption on livelihood resilience shows an intermediary effect: individual capital use of digital technology livelihood resilience. In this path. ICT adoption partially mediates the impact of individual capital on the level of livelihood resilience, and the indirect effect of ICT adoption on livelihood resilience is greater than the direct effect, and the results are robust. Further analysis shows that there is no significant gender difference in the impact of farmers' individual capital on livelihood resilience. Compared with previous literature this paper expands on the following aspects: first, the risk factors of most previous studies on livelihood resilience are natural and ecological. In this paper, the risk scenario of livelihood resilience was extended from relatively sudden natural ecology to changes in social factors, and the construction mechanism of livelihood resilience under changes in the social environment was constructed. Second, previous studies on livelihood resilience rarely included the effects of ICT adoption. In this paper, ICT adoption is included in the relationship between farmers' individual capital and livelihood resilience. Third, most previous literature finds that ICT adoption exacerbates the digital divide between urban residents and rural residents. However, this study finds that in the face of risks, digital technology, as an external social construction, also brings about social integration, and ICT adoption essentially plays a role in the redistribution of resources and factors between urban and rural areas and between regions. An important policy implication of this study is that in terms of effectively connecting the achievements of poverty alleviation and rural revitalization, the path of individual capital-digital technology-sustainable development should be generally followed, which would improve farmers' livelihood resilience and endogenous sustainable development ability in the face of external risks. [ABSTRACT FROM AUTHOR]

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 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 Acta Scientiarum Naturalium Universitatis Pekinensis is the property of Editorial Office of Acta Scientiarum Naturalium Universitatis Pekinensis 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.)

Yunnan is located in the center of the east-Asian karst area, one of the three largest karst areas in the world. Rocky desertification is widespread in the area, which seriously restricts the sustainable development of local social economy. In this study, we summarize the research status and achievements of rocky desertification in Yunnan mainly from three aspects, rocky desertification zoning, governance model and vegetation restoration in rocky desertification areas. The results show that rocky desertification areas in Yunnan are divided into 2 large areas and 5 small ones. After years of exploration, 23 kinds in 4 categories of rocky desertification control models have been formed, and 435 kinds of plant species can be used for ecological restoration in rocky desertification areas, including 376 species of shrubs and 59 species of herbs. Finally, combined with geographical location, climate and altitude, this paper preliminarily summarizes the suitable restoration vegetation, and points out the shortcomings in the studies on the control of rocky desertification, so as to provide an important theoretical reference for the subsequent research on the restoration and control of rocky desertification vegetation. [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]

Prefabricated dishes are an effective carrier for the foodization of agricultural products, which is an industry that is gradually moving towards a trillion-level market scale, playing an important role in ensuring food security. The prefabricated dishes industry develops modern agriculture with the concept of industrialization, promotes the further agglomeration and development of upstream and downstream supporting enterprises in the agricultural industry chain, which is the link connecting the primary, secondary and tertiary industries and the endogenous driving force to promote their innovation and development, and is an important bridge connecting the integrated development of multiple industrial chains such as production and sales between rural and urban areas. This paper introduced the development status of the prefabricated dishes industry, analyzed the problems facing by the prefabricated dishes, predicted the future development trend, and made a suggestion for the future development of the prefabricated dishes industry, so as to provide reference for the healthy and sustainable development of the prefabricated dishes industry. [ABSTRACT FROM AUTHOR]

Green and sustainable development of irrigated agriculture and protec tion of agricultural biodiversity are the inevitable require -ments for the construction of modern irrigated districts in China. However, in order to ensure the efficient utilization of irrigation water, the construction of irrigation channels has been dominated by hard engineering, which has caused the loss and fragmentation of amphibian habitat, and the damage for ecological environment of the irrigation districts. The construction of amphibian corridors in irrigation channels is an important way to improve the connectivity of agricultural landscape and the migration efficiency of frogs in farmland. This paper innovatively applies the hydraulic characteristics of curved channels to the research on ecological channels, builds the curved irrigation channel models, conducts numerical simulation experiment, analyzes the trajectory of frogs at the curved irrigation channels, proposes the design of engineered modifications to allow frogs to escape from field concrete ditches. To evaluate the effects of engineered modification on the effectiveness of frog-ways and the water transfer efficiency of irrigation channels, the paper compares the water flow pattern and calculates the head oss. By carrying out numerical simulation tests, the paper obtains the flow movement law of the concrete-lined irrigation channels with different bend angles, and the flow dynamic axis and velocity distribution are compared. As a result, the slow flow zone and the transverse circulation are found. The locations suitable for amphibian corridors to be built vary when the curvature of the curve changes. The numerical simulation and head loss calculation results show that the amphibian corridors in the bend has no obvious influence on flow pattern and water transfer efficiency, and the head loss in bend is about 3.83X10"4 m, which can ensure the safe and unobstructed water flow. This study is expected to provide a scientific reference and technical support for the ecological reconstruction of end irrigation channel systems. [ABSTRACT FROM AUTHOR]

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Copyright of Coal Science & Technology (0253-2336) is the property of Coal Science & 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.)

Copyright of Journal of Library & Information Science in Agriculture is the property of Editorial Board of Journal of Library & Information Science in Agriculture 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 Big Data Research (2096-0271) is the property of Beijing Xintong Media Co., Ltd. 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 Materials Engineering / Cailiao Gongcheng is the property of Journal of Materials Engineering 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.)

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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 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.)

As typical representatives of high-quality development, world-class enterprises are the fundamental direction and goal of Chinese enterprise development. Building a group of world-class enterprises with global competitiveness and building up the strength, quality, and size of Chinese enterprises are important tasks to accelerate the construction of Chinese path to modernization in the new era and new journey. However, there is still a significant disagreement between the academic and business communities regarding the cognition and understanding of world-class enterprises. There is no consensus on the basic issue of what world-class enterprises are and what characteristics they possess. Therefore, a “cognitive jungle” of world-class enterprises has emerged, which has constrained China's practice of building world-class enterprises. Based on a systematic review, induction, and evaluation of existing research on world-class enterprises at home and abroad, this article deeply deconstructs and redefines the concept and characteristics of world-class enterprises. Research has found that: firstly, the divergence in the definition of world-class enterprises focuses on the differences in the definition of “scope”, “degree”, and “elements” of world-class enterprises, with different limiting conditions forming the concept of world-class enterprises in a broad, narrow, and medium sense. Secondly, through a re-examination of the “scope”, “degree”, and “elements” of world-class enterprises, world-class enterprises could be defined as benchmark enterprises with outstanding core competitiveness, leading value creation capabilities, and excellent sustainable development capabilities globally or in specific industries and fields. And world-class enterprises could be divided into global world-class enterprises and industry-specific world-class enterprises. Thirdly, the existing research perspectives on characteristics recognition of world-class enterprises include characteristics recognition that focuses on resource capabilities, characteristics recognition that focuses on behavioral performance, and characteristics recognition that is diversified and balanced, but they have varying degrees of limitations. Fourthly, the reconstruction of the characteristics of world-class enterprises should cover two levels: explicit representation and implicit elements. For the former, comprehensive value leadership is the overall manifestation of a world-class enterprise, with product excellence as the primary condition, innovation leadership as the core condition, governance modernization as the basic condition, and brand excellence as the high-level condition, all of which constitute the concrete representation of the “four in one” of a world-class enterprises. For the latter, the long-term mission driven, strategic flexibility in responding to change with change, dynamic ability to traverse cycles, symbiotic and mutually beneficial ecosystems, and unique and outstanding cultural genes drive world-class enterprises to move towards and maintain success at a deep level. Compared with the existing researches, this paper deepens and expands in the following two aspects. First, this paper goes beyond the previous definition of empiricism, and structurally analyzes and defines the concept of world-class enterprises from the perspective of three components: “scope”, “degree” and “element”. Secondly, beyond the previous single perspective, this paper logically and consistently identifies the characteristics of world-class enterprises from two levels: explicit features and implicit elements. This study helps government departments and the business community to have a more scientific understanding and cognition of world-class enterprises, and provides direction guidance for Chinese enterprises to build world-class enterprises in practice. [ABSTRACT FROM AUTHOR]

Copyright of Hydrogeology & Engineering Geology / Shuiwendizhi Gongchengdizhi is the property of Hydrogeology & Engineering Geology 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.)

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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.)

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Copyright of Hydrogeology & Engineering Geology / Shuiwendizhi Gongchengdizhi is the property of Hydrogeology & Engineering Geology 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.)

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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 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 Coal Science & Technology (0253-2336) is the property of Coal Science & 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.)

Studying the carrying capacity of regional water resources is an important guarantee for realizing regional sustainable development. Taking the Beijing-Tianjin-Hebei region as the research object, this paper selects 16 evaluation indicators and divides the indicators into four sub-systems: society-economy-ecology-water resources from the perspective of the system. Then according to the principle of minimum information entropy, the entropy method, CRITIC method and mutation, the weights determined by the coefficient method are coupled, and the objective function is constructed to find the optimal combination weights through the genetic algorithm and calculate the comprehensive score. On this basis, the BP neural network is used to train the model and predict the future trend of the Beijing-Tianjin-Hebei water resources carrying capacity. The results show that the water resources carrying capacity of the Beijing-Tianjin-Hebei region was initially at a low level but there was an upward trend, the mid-term jitter declined at a low level, and showed an upward trend in recent years. It is predicted that the water resources carrying capacity of the Beijing-Tianjin-Hebei Region will be at a high level and reach a steady state. [ABSTRACT FROM AUTHOR]

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[Purpose/Significance] Based on the research of library transformation from the mode of "high-speed growth" to "high-quality development", this paper addressed the green development as one of the key routes for the transformation of public libraries and provides a multifaceted definition of green development and sustainability from home and abroad as applied to public libraries. [Method/Process] By investigating the transformation and development of domestic libraries in recent years and drawing on the experience from a range of international projects, this paper found out how dedication to be sustainable and green action has become more central and widespread in the library sector worldwide. Successful examples were drawn from IFLA Green Library Award as well as other innovative programs, services, buildings and projects based on increasing consciousness around the green development. This paper integrated an overview of various efforts to define the green library and arguements for sustainable libraries. At the same time, some typical examples of libraries' environmental awareness and sustainability have been presented. [Results/Conclusions] This paper puts foreword the key areas to implement the concept of green development in libraries, including library buildings, facilities and equipment, collections, information services, operational management as well as library strategic development plan, thus incorporating the library development in the scope of environmental, economic and social sustainability. Libraries should take into account the environmental impact of their building as well as their own activities. They should also consider their specific features, not just the criteria for green buildings and offices. Besides, they can promote recycling and sharing in the community in various ways. These actions can raise environmental friendliness as a value and signals the importance of environmental issues to the community. In the aspect of resource development, the basic task of libraries is to ensure open and easy access to reliable information, which includes environmental information. With the provision of information, libraries should also promote the information retrieval skills of the community in order to improve the information literacy of the public with regard to environmentally sustainable awareness. In conclusion, libraries should create an environmental strategy that defines the means and objectives of the environmental work. It is important to raise awareness of the role public libraries can play in the near future, showing proof of their contribution to UN 2030 Agenda and SDGs by measuring and gathering evidence of their performance, namely the access to information and knowledge, access to information infrastructures as well as literacy competences development.

In the process of revitalization of rural handicraft, it is already the general trend that the professional design teams engage in the transformation of traditional ethnic minorities craft to meet the market demand, which can effectively promote the development of an industry in a short term. But if we want to realize the long-term sustainable development of local culture and economy, we need to stimulate the initiatives of local people. With the theoretical support of Capability Approach, this paper takes the "Huayaohua" intangible cultural heritage poverty alleviation project of Hunan University as an example, analyzing the process of design innovation to stimulate the initiatives of the craftsmen and to empower the local people from the aspects as the internal ability stimulation and external capacity building of craftsmen and the use of new technology for "ability sensitive design". [ABSTRACT FROM AUTHOR]

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In order to fully understand the current situation of water resources utilization in the cities in the Taihu Basin under the background of the most stringent water resources management system, this paper summarizes the existing problems, and explores the future development direction of sustainable water resources. Based on the perspective of water footprint, it studies the utilization of water resources in the Taihu Basin and eight cities including Shanghai in the basin from 2015 to 2019, combined with the LMDI (Lograrithmic Mean Divisia Index Method) model to analyze the driving effect of population, wealth, and technical level on the changing in water footprint, and build an evaluation index system for the sustainable use of water resources.The results show that the total water footprint of the Taihu Basin has been declining in the past five years, the industrial and agricultural water footprints have been declining, and the domestic water footprint has been rising. Among the cities, Shanghai has the largest total water footprint and Jiaxing has the smallest. Technical level factors have the greatest impact on water footprint change, and population factors have the least impact. The degree of affluence and population are positively driven, and the technical level is negatively driven. The water footprint structure of the Taihu Basin is relatively stable, Shanghai and Suzhou are highly dependent on external water resources. The overall water footprint benefit continues to increase, with significant differences among cities in each indicator the ecological security situation of the water footprint is not optimistic, but it has shown a continuous improvement in the past three years. The research results indicate that in the future, cities in the Taihu Basin should increase investment in water-saving technologies, techniques and equipment when formulating and adjusting water resources management policies, promote the efficient development and utilization of agricultural and industrial water, strengthen the management of domestic water quotas, and pay attention to the pressure of population growth on water resources, continuously improve the utilization rate of water resources, and realize the sustainable use of regional water resources. [ABSTRACT FROM AUTHOR]

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Copyright of Coal Science & Technology (0253-2336) is the property of Coal Science & 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.)

Copyright of China Mechanical Engineering is the property of Editorial Board of China Mechanical 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.)

Based on the panel data of 204 prefecture-level cities in China from 2004 to 2019, this paper used the double-difference method to study the impact of ecological civilization demonstration area policy on ecological efficiency with the help of“quasi-natural natural experiment”from ecological civilization demonstration area. Results showed as follow.（1）Overall, the implementation of ecological civilization demonstration area policy has significantly promoted the improvement of ecological efficiency. At the same time, various robustness tests such as excluding the influence of other policies, counterfactual testing, replacing sample data, and propensity score matching-based difference-in-difference（PSM-DID）were carried out to ensure the reliability of the results.（2）Heterogeneity analysis showed that ecological civilization demonstration area policy had a more significantly effect on the improvement of ecological efficiency in the large cities and cities in eastern and central regions.（3）Mechanism analysis showed that ecological civilization demonstration area policy can improve the ecological efficiency of cities by driving technological innovation and optimizing industrial structure. Accordingly, it is proposed to further summarize the effective practices of the ecological civilization demonstration area policy. And a combination of policies should be carried out based on the consideration of heterogeneity factors. In addition, it is also necessary to focus on transforming and upgrading advantageous industries and stimulating innovation capabilities. [ABSTRACT FROM AUTHOR]

Currently more coal resource is buried in deep and more high-quality resource is located in the west of China. It makes a deep mining and a mining in the west become the new normal of coal resources exploitation. Thus a green mine construction, green mining development and green mining propulsion are imperative. This paper puts forward a"mining-dressing-backfilling+X"technical conception of green mining of coal resources. That is an underground integrated production system, which is integrated coal mining, coal-waste separation, and gangue backfilling with "active control of strata movement, gob-side entry retaining, gas extraction, disaster prevention, water-preserved-mining". The system forms a coal mining-dressing-backfilling+X(control, retain, extraction, prevention and preserved) collaborative production mode. The paper defines the"mining-dressing-backfilling+X"technical connotation and framework of greenmining, expounds "mining-dressing-backfilling+X"evolution of four generations, analyzes the specific technical advantages of its practice of green mining and gives the scientific engineering design method. The paper elaborates five aspects of typical "mining-dressing-backfilling + X"technology corresponding technical principle, engineering requirements, design process and methods, key technology and process equipment. Engineering practice of the Tangshan Coal mine, Zhaizhen Coal mine and 12 th Coal mine of Pingdingshan Group has respectively proved that "mining-dressingbackfilling+ control", "mining-dressing-backfilling + retain", "mining-dressing-backfilling + extraction " technologies have a remarkable technical superiority and the engineering demonstration effect. "Mining-dressing-backfilling + X "green mining extension in the future combines "mining-dressing-backfilling+processing", "mining-dressing-backfilling+intelligent", "mining-dressing-backfilling+adjustment"and "mining-dressing-backfilling +coordination". The overall formation of the "mining-dressing-backfilling+X"technology system can provide a strong technical support for the realization of green mining of coal and associated resources. [ABSTRACT FROM AUTHOR]

Copyright of Railway Standard Design is the property of Railway Standard Design 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 Mechanical Engineering is the property of Editorial Board of China Mechanical 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.)

Aiming at the characteristics that series of environmental and ecological problems must be accompanied during opencast mining operations,the authors propose the concept of surface mining disturbance effect quantification and evaluation.This paper expounds the connotation and characteristics of Surface Mining Disturbance Index (SMDI).The SMDI is a comprehensive index which considers ecological damage and repair,mining technology and process optimization,energy consumption structure optimization,pollutant emission and treatment,production management and other aspects of the problem,uses multi-disciplinary theory to solve the difference between resource conditions,mining conditions,regional,coal and pollutant types etc.Ultimately,the system uses the numerical number between -100 to +100 to make an evaluation or prediction of SMDI temporal and spatial variation.This paper studies the basic principles of constructing the evaluation index system,and puts forward the basic framework of the index system,which includes 2 categories of all the 23 evaluation indexes,and points out the synthetic method of the SMDI. [ABSTRACT FROM AUTHOR]