近年塔里木盆地河川年径流量变化趋势分析

Recent Tendency Analysis of River Discharge in the Tarim Basin

对塔里木盆地21条河流代表站的水文资料用秩次相关法分析近年来该盆地主要河流年迳流量的变化趋势。分析表明有上升、下降、平稳等三种类型。这与补给类型有关,但与近年气候变化引起径流量变化的相关不显著。

Owing to increasingly intensive influence of greenhouse effect on the global temperature , the climates of different natural zones would vary considerably ·In some places it probably becomes drier, while in other places it will become more humid . In this paper the river discharge variations in Trim Basin in recent thirty years were analysed. The analytical results of actual measured data show that the annual discharges of some rivers is increasing ,some decreasing and others keep unchanged. Such variation tendencies are mainly dependent on their recharge sources. For those rivers that are recharged largely by alpine ice - melted water the annual discharges tend to be increased; while for those mainly recharged by rainfall, their annual discharges tend to be decreased.