【摘要】 以遥感技术为手段,通过均值法、差值法、统计法等方法,利用20世纪80年代初和21世纪初植被生长旺期的GIMMS NDVI数据为数据源,分析内蒙古天然草原植被动态变化。分析结果表明,内蒙古天然草原植被状况动态变化较大,近20年中,植被状况呈现整体变差的趋势,61.88%的天然草原状况变差,30.17%持平,7.95%变好。植被覆盖度高、产量多的区域减少,植被覆盖度低、产量少的区域增多。更多还原

【Abstract】 The study took GIMMS NDVI data of the vegetation growth peak season in the early 1980’s and the beginning of this century as a data source,by means of the remote sensing techniques,analyzed dynamic changes of natural grassland vegetation of Inner Mongolia.The results showed that dynamic change of natural grassland vegetation was obvious in Inner Mongolia.In the past 20 years,the condition of the vegetation overall presented a deterioration trend,about 61.88% natural grassland deteriorated,30.17% unchanged,7.95% became better.The region of high vegetation coverage and biomass began to decrease while the region of low vegetation coverage and biomass was increasing.更多还原