Eco—environment range in the source regions of the Yangtze and Yellow rivers

编号 zgly0000312098

文献类型 期刊论文

文献题名 Eco—environment range in the source regions of the Yangtze and Yellow rivers

作者 DINGYongjian  YANGJianping  LIUShiyin  CHENRensheng  WANGGenxu  SHENYongping  WANGJian  XIEChangwei  ZHANGShiqing 

作者单位 ColdandAridRegionsEnvironmentalandEngineeringResearchInstitute  CAS  Lanzhou730000  China 

母体文献 Journal of Geographical Sciences;地理学报: 英文版 

年卷期 2003,13(2)

页码 172-180

年份 2003 

分类号 X171.1 

关键词 长江  黄河  资源分布  生态环境  青藏高原 

文摘内容 Based on geographical and hydrological extents delimited ,four principles are identified,as the bases for delineating the ranges of the source regions of the Yangtze and Yellow rivers in the paper,According to the Comprehensive analysis of topographical characteristics,climate conditions,vegetation distribution and hydrological features,the source region rages for eco-environmental study are defined,The eastern boundary point is Dari hydrological station in the upper reach of the Yellow River,The watershed above Dari hydrological station is the source region of the Yellow river which drains an area of 4.49×10^4 km^2, Natural environment is Characterized by the major topographical types of plateau lakes and marshland,gentle landforms,alpine cold semi-arid climated,and steppe and meadow vegetation in the source region of the Yellow River,The eastern boundary point is the convergent site of the Nieqiaqu and the Tongtian River in the upstream of the Yangtze River,The watershed above the convergent site is the source region of the Yangtze River,with a watershed area of 12.24×10^4 km^2.Hills and alpine plain topography,gentel terrain ,alpine cold arid and semi-arid climate,and alpine cold grassland and meadow are natural conditions in the source region of the Yangtze River。