基于加权TOPSIS模型和GIS技术的耕地提质改造潜力及区域分布研究

Research on the Potential and Regional Distribution of Cultivated Land Quality Improvement Based on Weighted TOPSIS Model and GIS Technology

以阳江市江城区为研究区,从地形地貌、土壤基本性状、土壤管理等方面选取10个评价因子,通过加权TOPSIS模型和ArcGIS软件的空间分析功能对研究区的耕地提质改造潜力进行测算,并利用自然断点法对潜力进行分级。结果表明,高、中、低3个潜力区域面积占比分别为18.67%、41.39%和39.94%,高、中潜力区主要分布在双捷镇、平冈镇、白沙街道和闸坡镇。这为江城区合理安排耕地提质改造区域和建设时序提供了基础数据。

Taking Jiangcheng District of Yangjiang City as the research area,this paper selected 10 evaluation factors from the aspects of topography,basic soil properties and soil management,calculated the potential of land quality improvement and transformation in the study area through the weighted TOPSIS evaluation model and the spatial analysis function of ArcGIS software,and classified the potential by using the natural break point method.The results showed that the area ratio of high,medium and low potential areas were 18.67%,41.39%and 39.94%respectively,the high and medium potential areas were mainly distributed in Shuangjie Town,Pinggang Town,Baisha Street and Zhapo Town.This provides basic data for the reasonable arrangement of reconstruction area and construction sequence of land quality improvement in Jiangcheng District.