绿洲-过渡带-荒漠气候特征日变化分析

通过对阜康地区2003年7月26口到8月1日的绿洲（棉田）——过渡带——荒漠3个选点（总距离约2km）的短期微气象观测，对该地区不同下垫面的辐射特征及风温湿的日变化进行了对比分析，结果表明，不同下垫面对应的各气候凼于的值有明显的日变化，日变化的趋势基本一致。对于绿洲和荒漠，太阳总辐射绿洲高于荒漠；气温日变化的值荒漠始终高于绿洲，体现了绿洲的“冷岛效应”；相对湿度日变化的值荒漠始终比绿洲小，体现了绿洲的“湿岛效应”；1d内，蒸发能力表现为绿洲小于荒漠；风速日变化的值始终是荒漠比绿洲大。而在过渡带，上述各气候因子日变化的值基本居于二者之间。

Analysis on Daily Change of Climate Characteristics about Oasis-Intermediate Belt-Desert

The comparison and analysis of the change of daily radiate character and THW about different surfare in this area were made based on short-term microclimate observation about oasis(cotton field)-intermediate belt-desert(the distance about 2 km) in Fukang area from July 26 to August 1 in 2003.The result showed that the daily variation of the climatic genes in different surface is basically consistent.The daily total radiation in oasis is higher than that in desert;The daily variation of temperature in desert is always higher than that in oasis.This phenomenon embodies "cold island effect" of oasis.The daily variation of relative humidity in oasis is bigger than that in desert,this displays the "waterish island effect" of oasis.The capacity of evaporation in oasis is smaller than that in desert in a day.All the day,the wind speed in desert is greater than that in oasis.In intermediate belt,the results of the climatic factors are basically in the middle.