基于遥感数据的砚瓦川流域土地利用动态变化  

Dynamic Change of Land Use in Yanwachuan Basin Based on Remote Sensing Data

作　　者：焦念[1] 闫璐瑶 许小梅[1] JIAO Nian;YAN Luyao;XU Xiaomei(Xifeng Soil and Water Conservation Scientific Experimental Station of Yellow River Conservancy Commission,Qingyang Gansu 745000)

机构地区：[1]黄河水利委员会西峰水土保持科学试验站,甘肃庆阳745000

出　　处：《现代农业科技》2021年第12期208-210,共3页Modern Agricultural Science and Technology

基　　金：中国水利水电科学研究院流域水循环模拟与调控国家重点实验室开放研究基金项目“黄土高塬沟壑区典型流域径流输沙对降雨的变化响应”(IWHR-SKL-KF201808)。

摘　　要：以砚瓦川流域为研究对象,利用遥感影像数据,分别从土地利用空间变化、土地利用程度、土地利用变化方向等3个方面研究砚瓦川流域2008—2018年土地利用情况。结果表明:2008—2018年砚瓦川流域最主要的土地利用类型由耕地转化为林草地,土地利用总体特征表现为耕地面积减少,林草地、建设用地、交通运输用地和水域及水利设施用地面积增加,其他土地面积减少;2008—2018年耕地和其他土地的单一土地利用动态度<0,面积减少;林草地、建设用地、交通运输用地和水域及水利设施用地的单一土地利用动态度>0,面积增加;砚瓦川流域土地利用程度越来越高,区域内的土地资源受人类活动的影响越来越大,土地利用处于发展阶段;2008—2018年耕地是变化最剧烈的土地利用类型,其减少面积主要转化为建设用地和林草地。Taking the Yanwachuan Basin as the research object,using remote sensing image data,the land use situation of Yanwachuan Basin from 2008 to 2018 was studied from three aspects:the spatial change of land use,the degree of land use,and the direction of land use change.The results showed that the most important land use type in Yanwachuan Basin from 2008 to 2018 was converted from cultivated land to forest and grass land.The overall characteristics of land use were as follows:the cultivated land area decreased,areas of forest and grass land,construction land,transportation land,waters and water conservancy facilities land increased,and other land areas reduced from 2008 to 2018.The single land use dynamic degree of cultivated land and other land was less than 0,and the area reduced;the single land use dynamic degree of forest and grass land,construction land,transportation land,waters and water conservancy facility land was greater than 0,and the area increased.Land use in Yanwachuan Basin was getting higher and higher,and the land resources in the region were increasingly affected by human activities.Land use in Yanwachuan Basin was in the stage of development.From 2008 to 2018,cultivated land was the type of land use with the most drastic change,and its reduction area was mainly converted to construction land and forest and grass land.

关 键 词：砚瓦川流域 土地利用 动态变化 

分 类 号：S127[农业科学—农业基础科学]