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1998-2005年石羊河流域土地利用/覆盖变化及其分析
引用本文:周兰萍,魏怀东,丁峰,陈芳,胡小柯.1998-2005年石羊河流域土地利用/覆盖变化及其分析[J].水土保持通报,2009,29(1):169-173.
作者姓名:周兰萍  魏怀东  丁峰  陈芳  胡小柯
作者单位:甘肃民勤荒漠草地生态系统国家野外观测研究站,甘肃省荒漠化防治重点实验室,甘肃省治沙研究所,甘肃,武威,733000  
基金项目:甘肃省荒漠化防治重点实验室建设项目,甘肃省沙漠综合治理技术研究创新团队项目 
摘    要:根据1998年和2005年两期影像数据,利用RS和GIS技术,分析了近7 a来石羊河流域土地利用/土地覆盖的数量、结构、类型和空间分布上的变化情况,并对土地利用/土地覆盖变化的驱动力作了探讨.研究结果表明,7 a间石羊河流域草地、戈壁、沙地、林地、旱地和盐碱地面积呈减少趋势;高山、居民点、水浇地呈增加趋势;水浇地增加幅度最大,增幅为89 485.22 hm2,主要是由林地、盐碱地、居民点、沙地和戈壁转变而来;人工林地、重轻度盐碱地和水浇地的土地利用动态度明显,依次为4.14%,3.48%,2.23%和2.56%;人口压力、经济因素、生态政策是影响该流域土地利用/土地覆盖变化的主要驱动力.

关 键 词:土地利用/土地覆盖  石羊河流域  土地利用类型转移矩阵
收稿时间:2007/10/11 0:00:00
修稿时间:2008/3/27 0:00:00

Analysis of Land Use/Cover Chang in Shiyang River Basin During the Period of 1998-2005
ZHOU Lan-ping,WEI Huai-dong,DING Feng,CHEN Fang and HU Xiao-ke.Analysis of Land Use/Cover Chang in Shiyang River Basin During the Period of 1998-2005[J].Bulletin of Soil and Water Conservation,2009,29(1):169-173.
Authors:ZHOU Lan-ping  WEI Huai-dong  DING Feng  CHEN Fang and HU Xiao-ke
Institution:National Research Station of Desertification, Pasture and Ecology System of Minqin;Gansu Key Laboratory of Desertification Combating, Gansu Institute of Desert Control, Wuwei, Gansu 733000, China;National Research Station of Desertification, Pasture and Ecology System of Minqin;Gansu Key Laboratory of Desertification Combating, Gansu Institute of Desert Control, Wuwei, Gansu 733000, China;National Research Station of Desertification, Pasture and Ecology System of Minqin;Gansu Key Laboratory of Desertification Combating, Gansu Institute of Desert Control, Wuwei, Gansu 733000, China;National Research Station of Desertification, Pasture and Ecology System of Minqin;Gansu Key Laboratory of Desertification Combating, Gansu Institute of Desert Control, Wuwei, Gansu 733000, China;National Research Station of Desertification, Pasture and Ecology System of Minqin;Gansu Key Laboratory of Desertification Combating, Gansu Institute of Desert Control, Wuwei, Gansu 733000, China
Abstract:Based on the images in 1998 and 2005,the variations of quantity,inner structure,type,and spatial distribution feature of Shiyang River basin in seven years were analyzed by using RS and GIS and the driving forces of the land use/cover change(LUCC) were further discussed.Results indicated that during the seven years,the areas of grassland,Gobi,sandy land,woodland,dryland,and saline-alkaline land in Shiyang River basin were decreased and alpine,residential area and irrigable land were increased.The most significant increase is the irrigable land and its increased area is 89485.22hm2,which was mainly converted from woodland,saline-alkaline land,residential area,sandy land,and Gobi.The land use dynamic degrees of artificial woodland,saline-alkaline land,and irrigable land were 4.14%,3.48%,2.23% and 2.56%,respectively.The driving forces of the LUCC in Shiyang River basin were the economic development,the pressure of increasing population,and ecological policies.
Keywords:land use/cover change  Shiyang River basin  transfer matrix of classified land use
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