基于RS的石羊河流域植被覆盖度动态监测  

Remote sensing based dynamic monitoring on change of vegetation cover in Shiyanghe River watershed

作　　者：韩兰英[1] 王宝鉴 张正偲[3] 万信 杨永顺 

机构地区：[1]中国气象局兰州干旱气象研究所中国气象局干旱气候变化与减灾开放实验室甘肃省干旱气候变化与减灾重点实验室,甘肃兰州730020 [2]兰州区域气候中心,甘肃兰州730020 [3]中国科学院寒区旱区环境与工程研究所,甘肃兰州730000 [4]青海省环境监测中心,青海西宁810007

出　　处：《草业科学》2008年第2期11-15,共5页Pratacultural Science

基　　金：中国科技部科研院所社会公益研究项目"中国干旱气象灾害监测预警方法研究"(2004DIB5J192-02-02);甘肃省气象局青年科技开发基金资助[气科函(2006)12号]

摘　　要：采用NOAA和EOS/MODIS遥感影像资料,计算并分析了石羊河流域1997-2006年的植被演变特点。结果表明,自1997年以来石羊河流域的植被盖度发生了非常明显的变化,植被总体上仍然向退化方向发展,生态环境进一步恶化。植被退化主要表现在稀疏植被和茂密植被的大幅减少方面,稀疏植被有向裸地转化的趋势,茂密植被逐渐向适中植被和稀疏植被转化。The data of NOAA and EOS/MODIS in Shiyanghe River watershed from 1997 to 2006 were used to calculate and analyze the vegetation change. The result shown that the vegetation cover significantly changed and the vegetation and ecological environment degraded. The degradation characterization was that the area of sparse or dense vegetation was reduced, and the sparse vegetation changed into the bare land and the dense vegetation gradually changed to moderate vegetation and sparse vegetation.

关 键 词：石羊河流域 植被盖度 遥感 动态监测 

分 类 号：Q948[生物学—植物学]