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With the increasingly prominent issues of climate change and energy shortages, large-scale development of renewable and clean energy has become a common choice for countries around the world. Among them, onshore wind power plays an important role in the global energy transformation process due to its mature technology, safety, and efficiency advantages. However, because wind energy resources have the characteristics of low energy density, instability, and spatial dispersion, large-scale development of onshore wind power requires a large amount of land resources to support. To ensure the land resource demand for wind power development under the goal of 'carbon neutrality,' this paper conducted a quantitative study on the land occupation of onshore wind power in China. Firstly, based on the criterion of exclusivity, this paper reclassified the types of land occupation for wind farms from a spatio-temporal perspective. Secondly, based on the sample parameter method and the alpha shape algorithm, this paper calculated the land area of existing onshore wind farms in China categorically. Finally, considering the development trend of wind power technology, this paper systematically simulated and predicted the wind power land demand in different development scenarios under the 'carbon neutrality' goal. The results indicated that: (1) Based on the principle of exclusivity, the total land use area of wind farms could be divided into two parts in the spatial dimension: the direct impact area and the indirect impact area. The direct impact area could be divided into two parts in the temporal dimension: permanent land use and temporary land use. (2) In 2022, the land occupied by the wind turbine foundation, permanent land use, temporary land use, and direct impact area of China's onshore wind farms reached 48.28 km², 352.08 km², 1 234.86 km², and 1 638.81 km², respectively. (3) In 2022, the indirect impact area and total land use area of China's onshore wind farms reached 9.81x104 km ² and 9.99x104 km², respectively. The total land use area was almost equivalent to the total urban land use area of China. (4) Compared with the scenario of current technical level, under the scenario of technological progress and wind turbine upgradation, the various types of land use demand for wind power in China will have significantly decreased by 2060, and land use demand will have reached its peak by around 2050. The large-scale upgradation of wind turbines has great potential for saving land resources. Therefore, perfecting the land use standards of wind power construction, improving the land use efficiency of wind power development, and promoting the construction of offshore wind power are important paths for coordinating the sustainable use of wind energy resources and land resources. [ABSTRACT FROM AUTHOR]

Copyright of Transactions of the Chinese Society of Agricultural Engineering is the property of Chinese Society of Agricultural 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 Irrigation & Drainage is the property of Journal of Irrigation & Drainage 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.)

Lead-zinc tailings are the main solid wastes in the process of flotation of lead and zinc, which are mainly divided into silicate tailings and carbonate tailings. China is a big producer of lead and zinc in the world. The total storage of lead and zinc tailings has reached 500 million tons, but the comprehensive utilization rate is less than 20%. A large number of lead and zinc tailings not only occupy valuable space and land resources but also bring serious safety problems and hidden dangers of environmental pollution. It is urgent to explore the comprehensive utilization ways of lead and zinc tailings. In recent years, with the development, transformation, and upgrading of China s resource industry, the basic research, technical development and industrial development of comprehensive utilization of lead and zinc tailings have become increasingly perfect and achieved remarkable results. In this paper, the research results on the consumption and comprehensive utilization of lead-zinc tailings in recent years are introduced from three aspects: the recovery of valuable components of lead-zinc tailings, the filling of underground goaf with lead-zinc tailings, and the comprehensive utilization of lead-zinc tailings as building materials, to provide reference for the related research on comprehensive utilization of lead-zinc tailings. [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 Journal of Irrigation & Drainage is the property of Journal of Irrigation & Drainage 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.)

Water is the lifeblood of agriculture. Different from land resources, water resources can flow across regions. Based on the perspective of ‘physical water and virtual water’ flow and using the panel data of 31 provinces (autonomous regions and municipalities) in China from 2004 to 2020, this paper used the dynamic spatial Durbin model to estimate the impact of regional grain trade on the pro⁃ portion of grain planting and that of rice, wheat, and corn in the context of inter-basin water transfer. The results showed that: ① For grain output areas, the impact of ‘physical water and virtual water’ flow decreased, the overall proportion of grain planting increased, and the proportion of corn planting among the grains decreased. It showed that the increase of water resource pressure in grain output areas played a greater role in promoting the induced technological change of grain production and strengthening the regional production division than limiting them, and there was a ‘paradox of irrigation efficiency’, that is, the progress of water-saving technology led to the increase of high water consumption crops. ② For grain input areas, the impact of ‘physical water and virtual water’ flow increased, the proportion of grain planting decreased, the proportion of short-term rice and corn planting increased, the proportion of rice (high water consumption crop) planting increased more, the proportion of long-term rice and corn planting decreased, and the proportion of corn (low water consumption crop) planting decreased more. It showed that the regional division of labor and strengthening of grain production reduced the proportion of grain planting in grain input areas, but the internal structure of grain was developing in the direction of more water consumption. ③ Under the current ‘physical water and virtual water’ flow, the grain input areas had a negative spatial spill⁃ over effect on the grain planting proportion in the output areas and the corn planting proportion among the grains, which showed that the reduction of water resource pressure in the grain input areas had a negative impact on the grain production in the grain output areas, and intensified the phenomenon of ‘paradox of irrigation efficiency’ in the internal structure of grain. The grain output areas had no significant impact on the grain planting proportion in the grain input areas. In the short term, the planting proportion of rice and corn was reduced, and the planting proportion of rice, a high water consuming crop, was reduced more, the planting proportion of rice and corn increased in the long term, and the planting proportion of corn, a low water consuming crop, increased more, indicating that the grain out⁃ put areas promoted the development of the internal structure of grain in the grain input areas in the direction of water saving. Finally, this paper puts forward the policy implications of implementing the overall management of ‘physical water and virtual water’, vigorously promoting the development of water-saving agriculture in grain output areas, and establishing regional grain virtual water compensation systems. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Agricultural Science & Technology (1008-0864) is the property of Journal of Agricultural 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 Transactions of the Chinese Society of Agricultural Engineering is the property of Chinese Society of Agricultural 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 Irrigation & Drainage is the property of Journal of Irrigation & Drainage 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.)

In the context of economic transformation, it is of great theoretical and practical significance to explore the impact of land capitalization on real economic growth. Different from the homogenized understanding of land capitalization, this paper proposes that case of land capitalization can be divided into moderate and excessive ones. Following this view, this paper first theoretically analyzes the impact of different degrees of land capitalization on the real economy, then makes an empirical study based on the micro data of Chinese industrial enterprises, and finally analyzes the current risks and reasons of excessive land capitalization in China. The results show that the degree of land capitalization and the real economy present an inverted U‑shaped relationship. Excessive capitalization exceeding the limit will promote the rise of total factor costs, thereby inhibiting the growth of the real economy. Judging from the inverted U-shaped turning point estimated by empirical data, the current urban economy is already facing a serious problem of excessive land capitalization in China, which may harm the real economy and affect the growth prospects of the Chinese economy. Further analysis shows that Chinese‑style decentralization may be the institutional reason for the excessive deepening of land capitalization. This paper provides important policy implications: Land capitalization is a double‑edged sword, and the key to gaining benefits and avoiding harm is to control the degree of capitalization. China must carry out the coordinated reform of performance appraisal, land market and land tax system to correct excessive land capitalization. In order to achieve high‑quality development and the transformation and upgrading of the real economy, China should take the initiative to change the support mode of land capitalization, reform the expenditure structure of land capital gains, and increase the expenditure on new infrastructure, science and education, and people's livelihood. [ABSTRACT FROM AUTHOR]

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

This paper constructed the mismatch index of land supply structure by cities in China from 2010 to 2019 and analyzed the direct effect and spatial spillover effect of land supply structure mismatch on urban carbon emission efficiency using the spatial Durbin econometric model. The results showed that: ① There were obvious regional differences and interactive forms of spatial strategies in the mismatch of urban land supply structures in China. The mismatch index of urban land supply structure in the eastern region was the lowest, while that in the northeast region was the highest. There was a 'race to the top' type of spatial strategic interaction in residential land supply mismatch, industrial land supply mismatch, and commercial service land supply mismatch. ② Due to the competitive effect of economic growth among cities, urban carbon emission efficiency had a significant positive spatial spillover effect. The estimation results of the spatial Durbin econometric model showed that the mismatch of land supply structures inhibited the improvement of the carbon emission efficiency of cities themselves as well as spatially related cities. ③ In terms of the degree of land supply mismatch in different industries, urban residential land supply mismatch, industrial land supply mismatch, and commercial service land supply mismatch were not conducive to improving the carbon emission efficiency of cities themselves as well as spatially related cities. ④ The mechanism analysis showed that, with the intensification of competition in attracting investment and fiscal and tax competition between cities, the negative effect of the mismatch of land supply structure on the carbon emission efficiency of spatially related cities and cities themselves was greater. In dimensional terms, the supply mismatch of residential land and commercial service land only inhibited the carbon emission efficiency of spatially related cities and cities themselves through fiscal and tax competition, while the supply mismatch of industrial land only inhibited the carbon emission efficiency of spatially related cities and cities themselves through competition in attracting investment. In order to improve the efficiency of urban carbon emissions, local governments should improve the lowcarbon oriented urban land governance system, curb the vicious competition of land resource allocation among local governments, constantly eliminate the micro-factors of urban land supply structure mismatch, and promote regional collaborative carbon emission reduction. [ABSTRACT FROM AUTHOR]

Copyright of Transactions of the Chinese Society of Agricultural Engineering is the property of Chinese Society of Agricultural 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 Natural Resources / Ziran Ziyuan Xuebao is the property of Journal of Natural Resources 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 Transactions of the Chinese Society of Agricultural Engineering is the property of Chinese Society of Agricultural 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 Transactions of the Chinese Society of Agricultural Engineering is the property of Chinese Society of Agricultural 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 Natural Resources / Ziran Ziyuan Xuebao is the property of Journal of Natural Resources 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 Natural Resources / Ziran Ziyuan Xuebao is the property of Journal of Natural Resources 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.)

Carrying out mine environmental research is a concrete action to build a "beautiful China", which can turn abandoned mines into mountains with clear waters and green trees. The previous exploitation of mineral resources was at the expense of human living environment, resulting in irreparable waste of resources and destruction of ecological environment, which brought serious mine environmental problems. At present, China is faced with outstanding mine environmental problems, but the restoration progress of mine environment is relatively slow. In order to solve the mine environmental problems caused by the exploitation of mineral resources scientifically, the idea of systems engineering is adopted, and the paper means to address the mine environmental problems from the following nine aspects: classification, investigation, evaluation and prediction, restoring techniques and modes, evaluation of land suitability, monitoring and early warning, information system research and development, regulations and standards, and mine environmental management. The classification scheme of mine environmental problems and the effect characteristics of each type are put forward; and in order to standardize mine environment investigation and data collection, the technical methods and standards of field in situ investigation are established; in order to grasp the present situation of mine environment and predict the future, the methods and models for mine environment evaluation and environmental predictions for different development schemes are put forward; due to the systematic attribute of mine environment, the research on environmental problems, remediation targets, remediation technologies and remediation model has been carried out, and the restoration and treatment model of mine environment has been established; from the perspective of the restoration and reuse of mine land resources, the theory and method of land suitability evaluation after restoration and treatment are constructed; and the monitoring and early warning technology of mine environment is developed for real time monitoring, analyzing the changing trend and early warning the emergencies; in order to visually display the achievements of mine environmental remediation and to share the experiences and lessons of restoration and management, a mine environmental information management system based on cloud platform, big data and other modern information technologies is developed; the laws, regulations and standards about mine environment at home and abroad are collated, compared and analyzed; and the responsibilities of the government and enterprises in the management of mine environment are expounded. Finally, the future development of mine environment research are prospected from the aspects of elimination the negative impact on ecological environment, exploitation the positive-effect resources of closed-pit mines, economic construction and transformation of mining cities, prevention theory and methods in deep mining mines, ecological environment of underground mines, theory and technology for public safety prevention and control, setting up of mine environment platform with big data and artificial intelligence. [ABSTRACT FROM AUTHOR]

Copyright of Transactions of the Chinese Society of Agricultural Engineering is the property of Chinese Society of Agricultural 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 Transactions of the Chinese Society of Agricultural Engineering is the property of Chinese Society of Agricultural 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.)