生态与农村环境学报2025，Vol.41Issue(6)：724-737,14.DOI:10.19741/j.issn.1673-4831.2024.0570
基于三维生态足迹的重庆市农业用水生态效率水平测度、脱钩关系及驱动因素分析
An Analysis of Agricultural Water Eco-efficiency in Chongqing:Measurement,Decoupling Relationships and Driving Forces Based on a Three-dimensional Ecological Footprint Model
摘要
Abstract
The effective supply of agricultural water resources is critical for promoting sustainable agricultural development.This study constructs an agricultural water eco-efficiency evaluation system by incorporating the three-dimen-sional ecological footprint of agricultural water use as an undesirable output indicator.Utilizing panel data from 37 districts/counties in Chongqing(2015-2021),we implemented an integrated analytical framework combining:static assessment via the super-efficiency SBM model;dynamic evolution analysis through ML productivity index;decoupling relationship exami-nation using the Tapio model;and driving factor decomposition via Kaya identity and LMDI method.Key findings reveal:(1)The three-dimensional ecological footprint of agricultural water exhibited an upward trend,peaking in the Main Urban New Area while remaining lowest in the Central Urban Area.(2)Static eco-efficiency demonstrated gradual improvement yet remained suboptimal,with significant regional disparities and weakened spatial agglomeration,demonstrating that there's much room for improvement.(3)Dynamic eco-efficiency followed a U-shaped trajectory,outperforming static measurements,driven primarily by technological progress.Efficiency growth rates varied substantially across regions:the Central Uban Area experienced the fastest growth,while the Main Urban New Area presented the slowest growth.(4)Four decoupling states were identified between eco-efficiency and economic growth:strong decoupling,weak decoupling,and expansion negative decoupling,indicating that the decoupling relationship was not ideal.(5)Economic development exer-ted positive impacts while labor input and technology adoption showed inhibitory effects on eco-efficiency.Thus,to enhance agricultural water utilization efficiency,it is suggested that such measures should be taken,including optimizing soil-crop systems through structural adjustments,promoting water-saving irrigation technologies and improving water infra-structure.关键词
三维生态足迹/农业用水生态效率/Tapio脱钩模型Key words
three-dimensional ecological footprint/agricultural water eco-efficiency/Tapio decoupling model分类
经济学引用本文复制引用
周小琛,赖苹..基于三维生态足迹的重庆市农业用水生态效率水平测度、脱钩关系及驱动因素分析[J].生态与农村环境学报,2025,41(6):724-737,14.基金项目
国家社会科学基金(22BJY083) （22BJY083）
重庆市社会科学规划项目(2021NDYB085) （2021NDYB085）
高等教育科学研究规划课题(23STWM0408) （23STWM0408）
