气象卫星条件植被指数监测土壤状况

USING METEOROLOGICAL SATELLITE'S VIC TO MONITOR SOIL STATE

本文介绍用１９８５—１９９１年ＮＯＡＡ卫星标准化植被指数（ＮＤＶＩ）资料进行处理生成的条件植被指数（ＶＣＩ），研究我国土壤的湿度状况，并阐述了应用ＶＣＩ，结合常规资料进行综合分析，监测由于干旱或大范围洪涝所造成的宏观植被状况变化的情况。研究结果表明，用气象卫星资料可以对我国的干旱、洪涝状况进行宏观动态监测。

In this paper, the soil state was investigated by using the Vegetation Condition index (VCI). The procedure of modifing the Normalized Difference Vegetation Index (NDVI) into the VCI by using NOAA satellite AVHRR 1985-1991 data was presented. By the comparison between the VCI and the conventional data, the vegetation chang caused by large scale drought or flood may by indicated. The results show that the meteorological satellite data are more suitable for drought or flood monitoring in China.