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作 者 ：徐兴奎,林朝晖,薛峰,曾庆存

期 刊 ：生态学报 2003年 23卷 2期 页码：221~230

关键词：归一化的植被指数；降水；活动积温；土壤质地；

Keywords:Normalized Difference Vegetation Index, rainfall, total active temperature, soil texture,

摘 要 ：降水和气温是影响地表植被覆盖状况的两个重要的气象要素 ,地表植被的生长对它们的响应又存在一定的滞后效应。利用我国 334个气象台站和 1 982～ 1 994年 NOAA- AVHRR卫星数据 ,通过相关分析研究了我国 4～ 7月份各气候区域降水和活动积温对地表植被的影响。结果显示 ,不同的气候区域和月份 ,降水和积温对地表植被的作用程度明显不同 ;前期降水和活动积温对植被作用的有效时间尺度也分布不均 ,并与土壤质地类型分布有关 ,因此 ,通过某一固定时间尺度的降水或活动积温不能准确的预测大区域地表植被的生长状况。

Abstract:Rainfall and temperature are two important factors that influence vegetation coverage over the land surface. The up-growth of vegetation lags behind rainfall and temperature in general. Due to their inhomogeneous distribution, the effect of rainfall and temperature on land surface vegetation cover differs distinctly. Some research results show that the time lag is 14 days, and suggested that the NDVI (Normalized Difference Vegetation Index) could be used as an index for the reconstruction of rainfall in som...

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