江苏水利Issue(11)：26-30,5.
水-能-粮-土关联下江苏省农业用水量时空特征及驱动因素分析
Spatiotemporal characteristics and driving factors of agricultural water consumption in Jiangsu Province under the water-energy-food-land nexus
摘要
Abstract
To alleviate agricultural water use pressure in Jiangsu Province,this study,from the perspective of the water-energy-food-land nexus,aims to reveal the spatiotemporal driving mechanisms of agricultural water use.Over the time span from 2013 to 2022,data from thirteen cities in Jiangsu Province were analyzed.The Logarithmic Mean Divisia Index(LMDI)method was employed to decompose changes in agricultural water use into six factors:population size,water use per unit output,land use patterns,mechanization level,machinery power per capita,and agricultural employment structure.In the temporal dimension,mechanical efficiency and land use efficiency were the primary factors reducing water use,while the water use quota effect,with an average annual increase of 1.092 billion tons,was the major contributing factor to increased water use.From a spatial perspective,water conservation in cities in southern Jiangsu mainly relies on mechanical effects,while cities in northern Jiangsu are significantly affected by land use effects.This provides a scientific basis for formulating regional agricultural water conservation policies.关键词
水/能源/粮食/土地/农业用水量/时空变化Key words
water/energy/food/land/agricultural water consumption/spatiotemporal variation分类
水利科学引用本文复制引用
孟凡继,陈鹏宇,周金晶,邱立波..水-能-粮-土关联下江苏省农业用水量时空特征及驱动因素分析[J].江苏水利,2025,(11):26-30,5.基金项目
江苏省普通高校自然科学研究项目(24KJB130005) （24KJB130005）
江苏省水利科技项目(2023034) （2023034）
