利用气象资料和卫星遥感资料,初步分析了2009/2010年冬季及2010年初春3月川西南山地植被对2009/2010年冬干的响应.结果表明,季降水评估的气象干旱为中到特旱,气象干旱强度突出；冬季平均温度偏高约2.0℃,冬季平均相对湿度偏少约17.0％.冬季及初春3月土壤相对湿度资料显示气象干旱发生发展趋势为冬季12、1月为轻旱,2～3月发展维持为中旱；冬季及初春3月卫星遥感监测月最大植被指数近5年安宁河平原区域植被指数逐月增加,川西南山地其余区域逐月减小,川西南山地中部及西部林区植被指数最高；植被指数差值分布显示,冬季到初春3月川西南山地2009/2010年冬干由南至北发展,总体上川西南山地南部区域以及安宁河平原区域受旱影响较为显著.%According to the meteorological and satellite remote sensing data, an initial research was carried out on the response of vegetation in 2009/2010 winter and early 2010 spring to the winter drought in the highland of Southwest Sichuan. As indicated by the results, the meteorological drought was assessed to be medium to severe, its intensity was prominent; the average winter temperature was about 2.0 t higher, while the average winter relative humidity was about 17.0% less than normal. According to the relative soil moisture data in winter and early spring, the development trend of meteorological drought showed as light drought in December and January and medium drought from February to March. As shown by the RS monitoring results, the largest vegetation index during the recent five years increased month by month in Anning River plain, while decreased month by month in other areas of the highland of Southwest Sichuan and was the highest in central and west forest area of the highland of Southwest Sichuan; distribution of vegetation index difference indicated that, 2009/2010 winter drought occurred from the south to the north, and it produced significant impact in the southern and the Anning River Plain of the study area.
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