摘要
利用GIS和遥感技术建立巴音布鲁克草原高寒沼泽、高寒草原和高寒草甸三种典型植被1982～2000年月合成NOAA-AVHRR归一化植被指数(Normalized Difference Vegetation Index,NDVI)时间序列。利用月合成NDVI的多年均值分析了三种典型植被NDVI年内季节性变化规律。同时,收集同期巴音布鲁克气象台降水量、气温、0～20cm浅层地温及日照时间,在区域尺度上分析巴音布鲁克草原典型植被覆盖变化与这些气候因子的关系,揭示气候变化对该区域植被覆盖变化的影响。
NDVI time series of three vegetations （chill swamp, grassland, meadow） in Bayinbuluk grassland from 1982 to 2000 are created with the technologies of GIS and RS. Seasonal changes of three vegetations NDVI are worked out from multi-year means of monthly compound NDVI data. Meanwhile, the precipitation, air temperature, 0-20cm deepening ground temperature, and sunlight time at Bayinbuluk observatory are collected synchronously, at regional scale the relations of vegetations and climate factors in Bayinbuluk grassland are analyzed for some implications of climate changes on regional vegetation growth.
出处
《遥感信息》
CSCD
2009年第1期53-59,共7页
Remote Sensing Information
基金
沙漠气象科学研究基金(Sqj2007009)
风云三号卫星在新疆荒漠化监测中的应用
关键词
GIS遥感
巴音布鲁克草原
高寒沼泽
高寒草原
高寒草甸
NDVI
降水
气温
浅层地温
日照时间
GIS
remote sensing
bayinbuluk grassland
chill swamp
chill grassland
chill meadow
NDVI
precipitation
air temperature
shallow ground temperature
sunlight time
