新疆玛纳斯湖演化的地貌特征
发布时间：2018-10-13 07:21
【摘要】：在北京一号卫星遥感影像的支持下,利用最新实测精度达到1 m分辨率的地形等高线数据、野外测量数据,结合20世纪50年代野外实地调查资料等前人研究成果,对玛纳斯湖演化的构造地貌特征及补给来源等进行了详细分析。结果表明:①构造运动奠定了玛纳斯湖及周围湖泊演化的基本地貌特征,玛纳斯湖是古玛纳斯湖在3次区域性构造运动和气候因素作用下解体后分离出的几个小湖泊之一,早在1915年玛纳斯河改道之前就已经存在,并不是游移湖。玛纳斯湖北部的洪积扇与古河道、多斯他浪岗冲积扇等表明,除接受玛纳斯河补给外,很多发源于准噶尔盆地南、北部山区河流都曾补给过古玛纳斯湖;这些冲、洪积扇的扇缘位置、玛纳斯湖和艾里克湖北部的两级阶地,玛纳斯河的三角洲平原及各湖泊都在海拔280 m的范围内,表明古玛纳斯湖的范围可能在海拔280 m的高程范围内;湖区钻孔取样分析等相关研究也表明,自晚更新世以来,该区域一直为湖泊环境。②各湖泊的补给关系分析及湖泊演化过程表明,人类活动是近半个世纪以来湖泊演化的主要驱动力,保证白杨河、玛纳斯河这两条补给河流的入湖水量,是该地区湖泊湿地得到恢复和维持的前提。
[Abstract]:With the support of Beijing 1 satellite remote sensing image, using topographic contour data with the latest measured accuracy of 1 m resolution, field survey data, combined with field survey data in 1950s and other previous research results, The tectonic and geomorphological characteristics and recharge sources of Manas Lake evolution are analyzed in detail. The results show that: 1 the tectonic movement has established the basic geomorphological characteristics of Manas Lake and its surrounding lakes. Manas Lake is one of several small lakes separated after the dissolution of ancient Manas Lake under the action of three regional tectonic movements and climatic factors. It existed long before the Manas River was diverted in 1915 and was not a moving lake. The alluvial fan and ancient channel in Manas Hubei, Doss Tallagang alluvial fan, etc., show that in addition to receiving supplies from the Manas River, many rivers originated in the south and north of Junggar Basin have supplied ancient Manas Lake; these alluviations. The location of the fan margin of the alluvial fan, the terraces of Manas Lake and Hubei Province, the delta plain of the Manas River and the lakes are in the range of 280 m above sea level, indicating that the range of the ancient Manas Lake may be within the elevation of 280 m. It is also shown that since the late Pleistocene, the region has been in the lake environment. 2 the analysis of the recharge relationship of the lakes and the process of lake evolution show that since the late Pleistocene the region has been in the lake environment. Human activities are the main driving force of lake evolution in the last half century. The water quantity of Baiyang River and Manas River is the prerequisite for the restoration and maintenance of lake wetland in this area.
【作者单位】： 中国科学院地理科学与资源研究所;福州大学;
【基金】：国家重点实验室自主创新项目 中国科学院地理科学与资源研究所知识创新工程新进所青年人才领域前沿项目
【分类号】：K928.6
本文编号：2267767
[Abstract]:With the support of Beijing 1 satellite remote sensing image, using topographic contour data with the latest measured accuracy of 1 m resolution, field survey data, combined with field survey data in 1950s and other previous research results, The tectonic and geomorphological characteristics and recharge sources of Manas Lake evolution are analyzed in detail. The results show that: 1 the tectonic movement has established the basic geomorphological characteristics of Manas Lake and its surrounding lakes. Manas Lake is one of several small lakes separated after the dissolution of ancient Manas Lake under the action of three regional tectonic movements and climatic factors. It existed long before the Manas River was diverted in 1915 and was not a moving lake. The alluvial fan and ancient channel in Manas Hubei, Doss Tallagang alluvial fan, etc., show that in addition to receiving supplies from the Manas River, many rivers originated in the south and north of Junggar Basin have supplied ancient Manas Lake; these alluviations. The location of the fan margin of the alluvial fan, the terraces of Manas Lake and Hubei Province, the delta plain of the Manas River and the lakes are in the range of 280 m above sea level, indicating that the range of the ancient Manas Lake may be within the elevation of 280 m. It is also shown that since the late Pleistocene, the region has been in the lake environment. 2 the analysis of the recharge relationship of the lakes and the process of lake evolution show that since the late Pleistocene the region has been in the lake environment. Human activities are the main driving force of lake evolution in the last half century. The water quantity of Baiyang River and Manas River is the prerequisite for the restoration and maintenance of lake wetland in this area.
【作者单位】： 中国科学院地理科学与资源研究所;福州大学;
【基金】：国家重点实验室自主创新项目 中国科学院地理科学与资源研究所知识创新工程新进所青年人才领域前沿项目
【分类号】：K928.6
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