基于GIS内蒙古自治区ET_0区域分布特征分析

ANALYSIS ON DISTRIBUTION CHARACTERISTICS OF ET_0 BASE ON GIS IN INNER MONGOLIA

本文论文运用Penman-Motheith(PM)法和FAO024 Penman(FP)法,利用内蒙古自治区135个气象站30a(1960～1990年)生育期(4月～9月)月均气象资料,获得了生育期月均ET0,采用GIS技术,分别绘制了内蒙古地区135个气象站30a生育期(4月～9月)月均ET0等值线图,对内蒙古自治区参考作物蒸发蒸腾量两种时间尺度上的空间分布特征进行分析。

ET0 is one of the most important parameters for hydrological cycle and determine crop water demand.It was estimated using Penman-Motheith（PM） and FAO24 Penman（FP） approaches based on 135 weather stations distributed all over Inner Mongolia with 30 years observed data（1960-1990）.The daily and yearly average ET0 was obtained and did research on the area distribution.The technology of GIS was used to draw ET0 isogram with 30 years observed data and the distribution characteristics were analyzed by capacity of evaporation and transpiration in Inner Mongolia.