干旱区耕地资源与水资源空间演变测度研究——以新疆为例

A study on the spatial evolution measurement of cultivated land resources and water resources in arid areas:A case study of Xinjiang

为了解干旱区耕地资源与水资源协调发展特点,以干旱典型地区新疆为研究对象,基于新疆2007—2021年耕地资源与水资源相关数据,利用熵值法、综合评价测算模型以及耦合协调测算模型,构建新疆及各地州耕地资源与水资源综合评价指标体系与耦合协调度模型。结果表明:从时间序列上看,2007—2021年新疆耕地资源与水资源的时间序列综合协调指数呈波动式小幅增长趋势;新疆耕地资源与水资源耦合协调发展程度总体处于波动上升趋势,但两者的耦合关系水平较低,耦合协调度也呈现出较大波动的失调状态。从空间演变上看,新疆各地州耕地资源与水资源空间演变综合发展指数差异性较大,耦合关系较弱,耦合协调度整体较低,协调发展面临一定的压力,北疆整体协调度高于南疆、优于东疆,整体上呈现“南弱北强”“西强东弱”的协调发展差异。

In order to understand the characteristics of the coordinated development of cultivated land resources and water resources in arid areas,this article takes Xinjiang,a typical arid area,as the research object,based on the relevant data of cultivated land resources and water resources in Xinjiang from 2007 to 2021,uses the entropy method,comprehensive evaluation calculation model,and coupling coordination calculation model to build the comprehensive evaluation index system and coupling coordination degree model of cultivated land resources and water resources in Xinjiang and various prefectures.The results show that from a time series perspective,the comprehensive coordination index of arable land and water resources in Xinjiang shows a fluctuating trend of slight increase from 2007 to 2021.The overall degree of coupling and coordinated development between arable land resources and water resources in Xinjiang is on a fluctuating upward trend,but the level of coupling between the two is relatively low,and the degree of coupling and coordination also shows a significant imbalance of fluctuations.From the perspective of spatial evolution,there are significant differences in the comprehensive development index of cultivated land resources and water resources in various regions of Xinjiang,with weak coupling relationship and overall low coupling coordination degree.Coordinated development faces certain pressure,with the overall coordination degree of North Xinjiang higher than that of South Xinjiang and better than that of East Xinjiang,demonstrating differences in coordinated development between“south and north”and“west and east”.