摘要
利用阿尔山市的气象资料,分析了1971—2007年地表潜在蒸散量和湿润指数的变化特征。结果表明:(1)从20世纪80年代以来,阿尔山市地表潜在蒸散量一直呈增大的趋势。(2)从对湿润指数(K)、潜在蒸散量(Eti)、年降水量(R)、年平均气温(T)的趋势分析看,阿尔山市干旱化有加重的趋势,降水有集中的趋势,阶段性干旱有增多加重的发展趋势,从而导致阿尔山市生态环境趋于恶化。
Based on the meteorological data of Arshan, analyzed the change character of the surface potential evapotranspiration and the index of wetness in 1971-2007. The results showed： 1. the potential surface evapotranspiration were continuously increased since 1980s.2. the degree of arid is aggravating, rainfall become more concentrated, resulting in the ecology and circumstance go to deteriorate in Arshan by analyzing the trends on index of wetness, potential surface evapotranspiration, annual precipitation and the annual mean temperature.
出处
《内蒙古气象》
2009年第3期27-29,共3页
Meteorology Journal of Inner Mongolia
关键词
潜在蒸散量
湿润指数
干湿分布
Potential surface evapotranspiration
Moisture index
Dry-and-wet distribution
