2009~2021年润州区土地利用变化特征分析

Characteristics of Land Use Changes in Runzhou District From 2009 to 2021

为了优化润州区土地利用结构,也为制定相关土地利用决策提供依据,以镇江市润州区为研究对象,探究了近年来润州区土地利用变化特征,采用2009~2021年地类图斑相关数据,通过土地利用转移矩阵、土地利用动态度等方法,结合ArcGIS10.7分析了润州区2009~2014年、2014~2018年、2018~2021年3个阶段的土地利用变化特征。结果表明:2009~2021年润州区耕地、水域、建设用地和未利用地面积下降,林地和草地面积增加,草地的年面积变化速率最快。整体看来,2018~2021年各土地利用类型变化速度快于2009~2014年及2014~2018年变化速度。根据土地利用转移矩阵,12年来耕地、林地、草地和水域与建设用地互相转化,说明润州区城市发展持续进行,规划工作持续推进,城市功能不断完善。

In order to optimize the land use structure of Runzhou District and provide a basis for making relevant land use decisions,this study takes Runzhou District of Zhenjiang City as the research object,explores the characteristics of land use change in recent years,adopts the relevant data of land class map plaques from 2009 to 2021,and adopts the methods of land use transfer matrix and land use dynamic attitude.Based on ArcGIS10.7,the characteristics of land use change in Runzhou District during 2009-2014,2014-2018 and 2018-2021 were analyzed.The results showed that the area of cultivated land,water area,construction land and unused land in Runzhou District decreased from 2009 to 2021,while the area of woodland and grassland increased,and the annual area change rate of grassland was the fastest.On the whole,the change rate of each land use types from 2018 to 2021 was faster than that from 2009 to 2014 and faster than that from 2014 to 2018.According to the land use transfer matrix,cultivated land,forest land,grassland and water area have been transformed into construction land in the past 12 years,which indicates the continuous urban development,continuous promotion of planning work and continuous improvement of urban functions in Runzhou District.