摘要近年来,由于气候变化和人类活动的共同影响,生态环境,特别是草地资源发生了较大的变化。本文利用美国地球资源观测系统数据中心探路者数据库(Pathfinder Data Sets)的1981～1999年序列的NOAA/AVHRR NDVI资料,阐述了该资料的处理方法、研究草地生产力动态变化的原理和计算方法,并分析了近20a来青海省草地生产力变化的空间和时间特征以及地区差异性。
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