摘要
乌伦古湖是新疆北部的内陆湖。在较长的一段时间内,该湖水位急剧下降。为了分析其原因,本文对气候变化与人类活动两种影响因素作了粗略区分。通过对乌伦古河径流量的还原计算,恢复了乌伦古湖天然径流补给量,同时利用福海站实测气象资料,计算了湖面降水及湖面蒸发。最后用水量平衡式逐年递推计算恢复了天然状况下湖水位的变化过程并与实际的湖水位变化相比较。前者反映了气候变化对该湖的影响。两者的差别则反映了人类活动的影响。结果显示,天然情形下,乌伦古湖水位变化略有下降的趋势,而实际情况下,该湖水位下降剧烈。气候变化对该湖的影响不到三分之一,主要的影响因素是人类活动。
Lake Wurengu which located in Northern of Xinjiang prov. is an interior lake. In the last 30-years period, the lake level rapidly fell down. In order to expose the main cause of the lake lavel fluctuation, there has made a distinction impact between the climate change and human activity with restoring the natural lake level fluctuation by the aid of the alignment of reconstruction natural runoff, precipitation and evaporation of the lake in the budget. The natural lake level fluctuation implied the impact of climate change, which showed a subtle trend of level falling down. The difference between the natural and the real reflected the influence of the-human activities, which showed that the lake level fluctuated wi thin large range in a tendency to decrease. The main impact is come from the human activity.
出处
《干旱区地理》
CSCD
北大核心
1992年第1期10-16,共7页
Arid Land Geography
基金
国家自然科学基金资助
