水土保持研究2012，Vol.19Issue(5)：148-152,157,6.
近25年延河流域土地利用／覆盖变化的时空特征
Spatio-temporal Characteristics of Land Use/Land Cover Change （LUCC） over the Past 25 Years in the Yan River Basin
摘要
Abstract
Based on the two vector maps of land use and cover of 1980 and 2005 of Yan River Basin in the middle reaches of the Yellow River, the spatio-temporal land use and cover change （LUCC） was analyzed with methods of transition matrix, land use dynamic degree and barycenter transfer. The results showed as followings： （1） the areas of forests and cropland had significantly changed within the certain 25 years, and mainly from farmland to forestry, but the grassland and cropland were still the major part , accounting for 87% or more of the area. The areas of these three types of lands were more than 99~ of that in theYanRiv- er Basin; （2） only 3.89~~ of the total land changed, but the settlement land use area increased rapidly with an annual increase rate of 4.10 ~//0, of which mainly came from cropland and grassland; （3） the regional differ- ences of LUCC were clear that the changing rate was greater in Ansai County than other counties induced by its active socio-economic activities; （4） the spatial characters of LUCC was quite even in the target region that the forests was shifted to the upper reaches and highland, and the barycenter of water bodies transferred to the lower reaches.关键词
延河流域/土地利用／覆盖/时空变化Key words
Yan River Basin/land use/land cover/spatio-temporal change分类
管理科学引用本文复制引用
张文帅,王飞,穆兴民,李锐,何毅..近25年延河流域土地利用／覆盖变化的时空特征[J].水土保持研究,2012,19(5):148-152,157,6.基金项目
国家自然科学基金资助项目“基于相同气候条件的人类活动对河流水沙影响定量评价：以黄土高原延河流域为例” （）
中国科学院重点部署项目“黄土高原及周边沙地近代生态环境的演变与可持续性” （）
欧盟第六框架计划项目“荒漠化防治与修复研究” （）
