黑河下游额济纳旗生态环境对调水的响应

The Response of Ejina County Ecological Environment on Water Transfer in Lower Reaches of Heihe River

利用额济纳旗水文监测资料、额济纳旗气象局1961—2007年地面气象观测资料、额济纳旗水务局2000—2009年地下水位和下泄水量和额济纳旗2002—2009年生态监测资料,结合实地调查,分析了黑河调水动态变化对下游地下水埋深、绿洲植被变化及东居延海水域面积的影响。结果表明:黑河调水后,下游下泄水量逐年增加,额济纳绿洲地下水位埋深逐年回升,东、西居延海恢复一定的水域面积,并且东居延海连续5年不干涸,绿洲面积有所增加,生态环境恶化及时得到遏制,缓解了下游水资源紧缺的状况,使得下游地区生态环境得到了初步改善,总体调水效果明显。

Using the data of hydrographic monitoring, surface weather observation 1961 to -2007） of Ejina County meteorological bureau, the data of groundwater level and release water quantity of Ejina county water affairs bureau ecological monitoring data of Ejina county from year 2002 to 2009 The influences of Heihe water transfer dynamic change on downstream groundwater depth, oasis vegetation change, eastern Juyan Sea water areas were analyzed through field investigation and remote sensing. The results showed that after Heihe river water transfer the release water quantity in downstream increased year by year, groundwater depth of Ejina oasis year by year, the eastern and western Juyan Sea restored definite water area, eastern Juyan Sea did not up continuously for five years, oasis area has slightly increased to some extent, eco-environment deterioration was controlled in time, alleviated the status of downstream water resource shortage, downstream eco-environment was improved preliminary, water transfer acquired obvious effect.