艾比湖水盐变化及其影响研究

Studies on water-salt change of Ebi Lake and its impact

从湖泊水文要素出发,基于湖泊和流域的关系,对半个世纪以来艾比湖面积、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;而近年流域内的人类活动,增大了降水径流的滞留时间和蒸发作用,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。

The trend of changes of hydrological factors, such as area and desalination etc, for the last 50 years have been analyzed and the reasons of the changes are examined, based on the relationship of lakes and river basins and in terms of hydrological elements of lakes. The result shows that the fragility of self-regulation of water resources system is determined by the features of relatively close and small area of river basin. Moreover, human activities in river basins in recent years have been increased the detention time of runoff of precipitation and its evaporation, resulting in the decrease of runoff running into the lake at last. The degree of desalination becomes higher due to the decrease of water in the lake.