艾比湖水盐变化原因及影响研究

从湖泊水文要素出发,基于湖泊和流域的关系,对半个世纪来艾比湖面积、矿化度等水文要素变化趋势进行了分析,并对变化原因进行了探讨,结果表明,相对封闭及较小尺度的流域面积等自身特性,决定了其水资源系统自我调节能力的脆弱性;而近年来流域上的人类活动,增大了降水径流滞留时间和蒸发作用,加大了对水资源的利用量,最终导致汇入湖泊的水量不断减少,矿化度在湖水量不断减少的情况下浓缩升高,最后就艾比湖水盐趋势变化及影响进行了讨论。

Study on the Causes and Impacts of Watersalt Change of Ebinur Lake

Based on the rehtionship between the Lake and its drainage basin, a series of the changes of hydrological factors, such as the lake area and salinity of the Ebinur Lake in recent 50 years, are analyzed using correlation analysis, and the causes resulting in such changes are researched in this paper. The results show that the self-regulation capability of the lake is weak because of the effects of geographical and hydrological factors in the systems of water resources in the drainage basin; the water carrying capacity of the drainage basin and the inflow of the lake are continuously reduced due to the increase of human activities and evaporation, thus the salinity of the lake is increased. Moreover, the trend and impacts of water- salt change of the Ebinur Lake are also discussed.