基于退耕还林还草政策的土地利用变化分析——以固原市为例  

Analysis of Land Use Change Based on Policy of Returning Farmland to Forests and Grasslands——A Case of Guyuan City

作　　者：马娟 全斌 周泽 Ma Juan(College of Geography and Tourism,Hengyang Normal University,Hengyang,Hunan 421002)

机构地区：[1]衡阳师范学院地理与旅游学院,湖南衡阳421002

出　　处：《农业灾害研究》2023年第11期262-265,共4页Journal of Agricultural Catastrophology

摘　　要：采用强度分析和变化成分分析方法,从变化成分、间隔层次、类别层次、转移层次方面定量地分析1990—2020年固原市的土地利用强度。结果表明:1990—2000年,土地利用的变化以数量变化为主,而2000—2020年则以移位变化为主;在两轮退耕还林还草政策下,固原市土地利用变化强度先增加后减少,在类别层次上,建设用地与耕地表现为活跃的状态,草地表现为稳定性状态;在转移层次上,草地最倾向于转换为林地,草地面积的增加主要来源于耕地。This paper uses the methods of intensity analysis and change component analysis to quantitatively analyze the land use intensity of Guyuan City from 1990to 2020 in terms of change component,interval level,category level and transfer level.The results indicate that:(1) Between 1990 and 2000,land use change was mainly characterized by quantitative changes,while between 2000 and 2020,it was mainly characterized by displacement changes.(2)Under the two rounds of Grain for Green and grassland policy,the intensity of land use change in Guyuan City first increased and then decreased.At the level of category,construction land and cultivated land showed an active state,and grassland showed a stable state.(3) At the transfer level,grassland is most inclined to be converted into forest land,and the increase of grassland area mainly comes from cultivated land.

关 键 词：土地利用 强度分析 退耕还林还草 固原市 

分 类 号：F301.24[经济管理—产业经济]