摘要
洋河流域是北京重要水源涵养地和生态保护屏障,对于北京水源保护有重要意义。本文基于洋河流域沿线2008—2017年高分辨率卫星提取的土地利用解译数据,运用ArcGIS空间分析以及土地利用转移矩阵,揭示了洋河流域沿线2008—2017年土地利用时空变化特征。结果表明,林地、耕地和草地是洋河流域主要的土地覆盖类型。在2008—2017年间,草地、耕地面积减少,林地面积增加,林地变化幅度相对较大,且生态服务价值增加最多;因人类活动的影响,洋河流域沿线土地利用程度综合指数增加,湖泊的单一土地利用类型变化最大。
The Yanghe Watershed is an important watersource conservation site and ecological protection barrier for Beijing,it was important to water resource protection of Beijing.This paper obtains the land-use data of the Yanghe Watershed from 2008 to 2017,which interpreted through high resolution remote sensing image.Then spatial analysis based on ARCGIS and land-use transfer matrix were applied to reveal the temporal-spatial features of land-use changes from 2008 to 2017 in the Yanghe Watershed.The results showed that the forest,farmland and grassland were the dominant land cover.Areas of the Grassland and farmland within the watershed decreased during the study period.The variation intensity of forest areas was larger than the grassland and the ecosystem service-function values increased the most.In addition,because of the influence of human activities,the comprehensive indexes of land-use increased.The variation intensity of land-use of lake was the most.
作者
杨雅菲
李培楠
朱向葵
孙红
YANG Yafei;LI Peinan;ZHU Xiangkui;SUN Hong(Beijing Zhongyun Weitu Technology Co.,Ltd.,Beijing 102208,China;Xifengsi Forest Farm,Mentougou District,Beijing 102300,China;Forest and Grassland Pest Control General Stations,The National Forestry and Prairie Administration,Shenyang 110034,China)
出处
《热带地貌》
2021年第1期18-23,共6页
Tropical Geomorphology
基金
高分辨率对地观测系统重大专项(民用部分)“高分林业遥感应用示范系统(二期)”课题子课题“高分松材线虫病监测应用子系统”(21-Y30B02-9001-19/22-7)
