锡林郭勒盟草地MODIS—NDVI植被指数和估产牧草产量季节变化特征——以2005年4-9月的变化为例

Temporal changes of MODIS-NDVI vegetation index and forage biomass in Xilinguole grassland-taking the change from April to September in 2005 as a sample

利用新一代卫星遥感数据TERR/MODIS,结合地面调查数据,以内蒙古自治区锡林郭勒盟草地为研究区域,分析了草甸草原、典型草原、沙地草原和荒漠草原4种代表性草地植被指数和草地生物量的季节变化特征,以2005年4-9月时间变化为例,较详尽地反映草地在其生长期内各个阶段植被指数和草地生物量的变化趋势,进而反映草地牧草生长发育状况。

The temporal and special changes of the NDVI of the NDVI of the four typical grasslands, including temperate meadow, temperate steppe, sand steppe, and temperate desert steppe, were analyzed through ground investigation of grasslands and new remote sensing data MODIS, taking Xilinguole grassland in Inner Mongolia as an example region. The results indicated that MODIS-NDVI vegetation index could reflect the changes of grassland NDVI and biomass during its growth time in more detail, which reflected its growth status, taking the change from April to September in 2005 as a sample.