江西农业学报2025，Vol.37Issue(9)：99-108,10.DOI:10.19386/j.cnki.jxnyxb.2025.09.015
基于改进FAHP-Entropy赋权法的耕地破碎化时空分析
Spatiotemporal Analysis of Cultivated Land Fragmentation Based on Improved FAHP-Entropy Weighting Method:A Case Study of Xinjin District,Chengdu City
摘要
Abstract
In order to understand the spatiotemporal change pattern of cultivated land fragmentation and delineate the remediation areas,this study analyzed the spatial and temporal differentiation of cultivated land fragmentation by the improved FAHP-Entropy weighting method from the dimensions of scale,shape,and distribution,and determined the remediation zoning combined with hot spot analysis.The results showed that:(1)In terms of the dynamic change of cultivated land,the number of cultivated land patches during the study period showed a downward trend.The scale of cultivated land decreased first and then increased,and the decreasing cultivated land showed a state of agglomeration to the southwest.(2)In terms of the temporal and spatial variation of cultivated land fragmentation at the county scale,the landscape fragmentation index of cultivated land during the study period showed an overall downward trend.The fragmentation indices of scale,shape and distribution all showed a decreasing trend,and the impact of scale fragmentation index on landscape fragmentation index was dominant.(3)In terms of the temporal and spatial variation of cultivated land fragmentation at the township scale,there were differences among different towns,but the overall distribution pattern showed an upward trend in the northeast and a downward trend in other areas.From different dimensions,the number of towns with high and low values of the scale,shape and distribution fragmentation has decreased,while the median number of towns has increased.Overall,it showed a more balanced trend.(4)The hot spot analysis results of cultivated land landscape fragmentation of the land change survey in 2023 showed a decreasing trend from east to west,and had strong spatial correlation and obvious regional characteristics.They were finally divided into three remediation areas:zone Ⅰ(hot spot area),zoneⅡ(insignificant area)and zone Ⅲ(cold spot area).关键词
耕地破碎化/改进FAHP-Entropy赋权法/时空分析/整治分区Key words
Cultivated land fragmentation/Improved FAHP-Entropy weighting method/Spatiotemporal analysis/Remediation zoning分类
管理科学引用本文复制引用
黄梦佳,赵诗童,李颖,张汝正..基于改进FAHP-Entropy赋权法的耕地破碎化时空分析[J].江西农业学报,2025,37(9):99-108,10.基金项目
四川省科技计划项目(2024JDKY0017-4). （2024JDKY0017-4）
