Measurement and temporal and spatial characteristics of agricultural eco-efficiency under climate change: a case study of Anhui, China

Frontiers in Sustainable Food Systems

Sustainable Food Systems

Yu Liu¹  Jichang Han²  Zenghui Sun³  Hao Dong³  Yang Zhang³  Xiandong Hou⁴  Tianqing Chen⁵ 

[1] School of Ecology and Environment, Northwestern Polytechnical University, Shaanxi, China;Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Shaanxi, China;Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Shaanxi, China;Institute of Land Engineering and Technology, Shaanxi Provincial Land Engineering Construction Group Co., Shaanxi, China;Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Shaanxi, China;Land Surveying, Planning and Design Institute of Shaanxi Land Engineering Engineering Construction Group Co., Ltd., Shaanxi, China;Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Shaanxi, China;Shaanxi Construction Land Engineering Quality Inspection Co., Ltd., Shaanxi, China;

关键词: rural non-point source pollution;    agricultural ecological efficiency;    space–time evolution characteristics;    China;    north-south transition zone;   

DOI  :  10.3389/fsufs.2023.1255235

 received in 2023-07-10, accepted in 2023-08-28,  发布年份 2023

来源: Frontiers

【 摘 要 】

IntroductionAgricultural eco-efficiency is an important index to evaluate the agricultural sustainable development and ecological economics, while simultaneously providing a metric for improvements to the rural environment and the stability of agricultural ecosystems.MethodsThis study took Anhui province as a case, and applied unit survey and list analysis methodologies to quantify rural agricultural non-point source pollution (NPS). Input-oriented super-efficient DEA-SBM was used to measure agricultural eco-efficiency in the typical North-South Transition Zone, and evaluated spatial correlations and differences.ResultsThis study showed that NPS was relatively stable, with less than 5% local variation in Chemical Oxygen Demand (COD), Total Nitrogen (TN), and Total Phosphorus (TP) pollutants. The environmental pressure caused by livestock breeding and the use of chemical fertilizers was very substantial, and the differences of rural agricultural NPS in Anhui Province had obvious north-south characteristics. The agricultural eco-efficiency exhibited an “inverted N” trend. Affected by the “Spatial proximity effect” and the “Matthew effect”, it presented spatial agglomeration and positive spatial correlation. The regional differences were significant, and the heterogeneity increased in our study areas. The southern region had the greatest variation, followed by the northern region, with the smallest variation in the central region, although inter-regional differences were consistent.DiscussionThough the rational allocation of resources, coordination between agricultural economic and environmental protection would be realized, and better conditions for the sustainable development of agricultural ecology and the long-term stability of agricultural ecosystem would be created.

【 授权许可】

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Copyright © 2023 Dong, Han, Zhang, Chen, Sun, Hou and Liu.