摘要
本文介绍了全球气候变化对区域水文影响的一些估算方法,分析了欧亚地区近几十年来几个冰川流域的径流变化,结果表明,由于干、热气候的影响,70年代以来整个天山山区冰川消融非常强烈,冰川补给的河流径流量明显增大,而降水补给的河流径流量显著减小。
As the atmospheric concentration of carbon dioxide and othertrace gases increases, changes in global and regional climatic con-ditions will lead to a wide range of hydrologic impacts,includingchanges in the timing and magnitude of runoff and soid moisture,Some. methods for evaluating the regional hydrologic impacts ofglobal climatic changes are presented in this paper. Furthermore,these methods can be combined with state-of-the-art informationfrom general criculation models of the climate and with plausiblehypothetical climate-change scenarios to generate information onthe water-resource implications of future climatic changes. In order to assess the climatic variation and to determine theimpacts on meltwater from glacier and snow, variations of runofffrom several glaciated basins in Eurasia during last 30-40 years arealso analysed.It is clear that the effect of dry and hot climate haveintensively advanced the ablation of glacier and snow in wholeTianshan Mts since 1970`s. Runoff of rivers fed by glaciers increasesmarkedly but that by precipitation decreases.
出处
《干旱区地理》
CSCD
北大核心
1989年第2期50-58,共9页
Arid Land Geography
