摘要
青海省地处青藏高原, 生态环境脆弱。近20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。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)1981—1999年间的 NOAA/AVHRR NDVI资料序列, 分析了青海省近 20 年来草地生产力变化的时间特征及地区差异性。
Qinghai province is located in Qinghai-Xizang Plateau and ecological environment is fragile. In recent 20 years, because of the combined influence of climate change and human activities, the great change of ecological environment, especially grassland resources, have taken place. By using Pathfinder Data Sets of NDVI from 1981 to 1999 provided by EROS data center, on the basis of studying the principles and methods of dynamic change of grassland productivity, the spatial and temporal characteristics of grassland productivity change and difference between different places in the latest 20 years were analyzed.
出处
《高原气象》
CSCD
北大核心
2005年第1期117-122,共6页
Plateau Meteorology
基金
国家科技部社会公益研究专项课题"三江源地区水土条件的动态监测研究"(2002DIB10052)资助
