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生态调水前后塔河下游湿地时空变化监测/Wetland Dynamic Monitoring and Change Analysis in Downstream of the Tarim River by Remote Sensing Around Ecological Water Diversion[J]
Authors
中国科学院新疆生态与地理研究所,乌鲁木齐,830011
中国科学院遥感与数字地球研究所,北京,100101
+6 more
中国科学院遥感与数字地球研究所,北京100101
张新
朱长明
李均力
江苏师范大学城市与环境学院,徐州221116
骆剑承
Publication date
1 January 2014
Publisher
Abstract
湿地作为干旱区一种重要而特殊的生态系统,具有很强的环境指示性.为了准确地认识和评估人工生态输水对塔里木河下游湿地生态环境修复的成效.文章通过遥感技术手段,动态地监测了人工应急生态输水前后塔里木河下游的湿地景观变化.研究结果表明:通过10余次的人工生态输水,在总体上改变了流域湿地长期持续减少的状态,流域范围内湿地总面积呈现稳中有增,湿地生态环境得到了明显改善.其中,河流湿地和湖泊湿地变化过程呈现“V”型逆转,面积有着显著的增加;沼泽湿地减少的速度得到明显遏制,动态度由1990-2000年的-5.35%降低到2000-2010年-1.09%;此外,下游河道断流现象得到改善,尾闾湖——台特玛湖在干涸了近30年后重现恢复往日生机.说明了塔河人工生态调水对下游的湿地生态环境拯救起到了积极的作用.以上研究可为塔河的综合治理提供有益的科学依据和决策支持
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Last time updated on 29/11/2016