近35年红碱淖动态及驱动因子分析

Hongjiannao Dynamic in Recent 35 Years and Ecology Driving Factors Analysis

红碱淖是中国最大的沙漠内陆湖泊,位于鄂尔多斯高原.通过对1978 ～ 2012年红碱淖面积变化动态与气候因子在时间序列上的相互作用进行分析,揭示了内陆湖泊面积萎缩的驱动原因.研究结果显示,1978～2012年湖泊年平均萎缩率为1.31％.1987 ～ 2012年红碱淖面积呈递减趋势,1978年湖面积为61.93 km2,2012年湖面积33.08 km2.该流域降水减少是内陆湖泊面积变化的驱动因子之一;通过分析该流域的社会经济发展,发现人类活动干扰是使湖泊面积减少的主要驱动因子.最后揭示了以降水补给为主的高原内陆湖泊红碱淖面积动态及生态胁迫原因.

Hongjiannao is the largest desert inland lake in China,which lies in the Erdos Plateau.Based on analyzing the interaction of Hongjiannao area change and climate factors in the time series during 1978-2012,the inland lake shrinking driving reasons were revealed.The results showed that,average annual rate of contraction of lake areas was 1.31％ during 1978-2012,Hongjiannao area showed a decreasing trend during 1987-2012,lake area in 1978 was 61.93 km2,lake area was 33.08 km2 in 2012,the precipitation reduction is the driving factor of inland lake area change; through the analysis of the basin＇s economic and social development,human disturbance is the main driving factor to reduce the area of the lake.The precipitation recharge based plateau inland lake Hongjiannao area dynamic and ecological stress causes were revealed.