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地理学报  2003 

长江黄河源区生态环境范围的探讨

DOI: 10.11821/xb200304005, PP. 519-526

Keywords: 江河源区,生态环境,范围

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Abstract:

在江河源区地理学与水文学界定的基础上,在明确界定源区范围四大原则与依据的前提下,文章综合分析了长江黄河源区的地貌特征、气候条件、植被分布以及水文水系特征,并在此基础上综合确定了长江黄河源区生态环境研究的范围。以达日水文站为界,以上区域为黄河流域生态环境研究的源区范围,流域控制面积约4.49×104km2,源区为高原湖泊沼泽地貌,地形平缓,高寒半干旱气候,受水热条件控制植被主要为草原化草甸;长江流域生态环境研究的源区以聂恰曲汇口为界,流域控制面积约12.24×104km2。长江源区为高平原丘陵地貌,地形变化和缓,气候为高寒干旱半干旱气候,因范围广阔,分布高寒草原和高寒草甸植被。

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