基于GIS关中平原城市群土地利用时空演变分析

Spatial Temporal Evolution of Land Use in Guanzhong Plain Urban Agglomeration Based on GIS

以关中平原城市群为例,探究关中平原城市群2000年、2010年、2018年3个时期,重点开发区、农产品主产区、生态功能区3个区域土地利用的时空动态变化。研究结果表明:2000—2018年,关中平原城市群建设用地增长了近44.2%,耕地是城市建成区扩张的主要来源;重点开发区内建设用地增长57.5%,其增长速度大于整个研究区的增长速度;农产品主产区耕地面积减少1187 km2,减幅为4.3%;生态功能区内各类用地变化幅度小。对各类用地分区域统计,有利于城市群城市用地的合理规划。

Taking Guanzhong Plain Urban Agglomeration as an example,this paper explores the temporal and spatial dynamic changes of land use in key development zones,major agricultural product producing areas and ecological function areas of Guanzhong Plain Urban Agglomeration in 2000,2010 and 2018.The results show that the construc⁃tion land of Guanzhong Plain Urban Agglomeration increased by nearly 44.2%from 2000 to 2018,and cultivated land is the main source of urban built-up area expansion.The growth rate of construction land in the key develop⁃ment zone is 57.5%,which is faster than the whole research area;The area of cultivated land in the main agricultural product producing areas decreased by 1187 km or 4.3%;The change range of various types of land in the ecological function area is small.The regional statistics of various types of land use is conducive to the rational planning of ur⁃ban land use in urban agglomerations.