我国退牧还草工程重点县草原植被长势遥感监测  

Monitoring by remote sensing of vegetation growth in the project of grassland withdrawn from grazing in counties of china

作　　者：徐斌[1] 陶伟国[1] 杨秀春[1] 覃志豪[1] 高懋芳[1] 

机构地区：[1]中国农业科学院农业资源与农业区划研究所,北京100081

出　　处：《草业学报》2007年第5期13-21,共9页Acta Prataculturae Sinica

基　　金：国家高技术研究发展专项(863计划)"草原监测管理系统关键技术研究"(2006AA10Z242)资助

摘　　要：利用遥感和地理信息系统等先进技术手段,基于MODIS数据,对我国4大主要草地类型区的退牧还草工程县的草原植被长势进行了监测,主要结论如下:1)内蒙古东部退化草原区2005年草原植被长势虽然差于2004年的面积有上升趋势,但是总体长势良好,明显好于2004年;2)蒙甘宁西部荒漠草原区2005年草原植被长势较差,虽然生长季节草原植被长势差于2004年的面积呈上升趋势,但总体相对比较稳定;3)新疆北部退化草原区2005与2004年相比长势持平的草地面积所占比重大,比较稳定,呈现出长势好差交替的时序变化格局;4)青藏高原东部江河源草原区2005年草原长势好于2004年的草地面积占本区总草地面积的48.07%,长势差于2004年的草地面积占本区草地总面积的32.56%,与2004年持平的占19.37%,由此表明青藏高原东部区草原长势明显好于2004年同期,长势差和长势好于2004年的草原面积波动较为明显。The integration of 3S （RS, GIS, GPS） was used to monitor the vegetation growth in the project of the grassland withdrawn from grazing in the counties with MODIS data. Some conclusions are： 1） The areas of degraded grassland in 2005 were bigger than in 2006 in eastern Mongolia, but the whole grassland vegetation growth was better than in 2004; 2） In 2005, vegetation growth in desertified grassland of western Inner Mongolia-Ningxia-Gansu was worse than in 2006 and the variance was smaller; 3） The share of areas in northern Xinjiang grassland where vegetation growth was unchanged or larger and stable than 2004, and there appears to be a better-worse alternation of temporal changes; 4） In the riverhead areas of the Yangtze and Yellow Rivers of the eastern Tibet Plateau, the areas where vegetation growth was better than 2006 occupy 48. 1% of all grassland in the area, but vegetation growth was worse in 32. 56% of the grassland areas in this region. Area where vegetation growth was unchanged relative to 2004 occupy 19.37% of all the area. Grassland growth in 2005 was better in the same period than in the previous year.

关 键 词：MODIS数据 草原遥感 归一化植被指数 草原植被长势 退牧还草工程 

分 类 号：S812[农业科学—草业科学] S431.9[农业科学—畜牧学]