中文摘要：

以公开发布的水资源数据以及人口、GDP等社会经济数据为主要数据源，以ARCGIS为技术平台，提取喜马拉雅地区印度河、恒河、雅鲁藏布江-布拉马普特拉河及其主要跨国支流的河流长度、流域面积、年降雨量、年地表径流量、人口、耕地面积和GDP等水资源以及社会经济信息。结果表明，中国境内的水资源量以及人口、耕地、GDP等社会经济量在3大河流系统中所占的比例都很小。印度河、恒河和雅鲁藏布江-布拉马普特拉河的天然径流量分别为2．07×10^11m3／a、5．50×10^11m3／a和8．28×10^11m3／a，其中中国境内的产流量分别为1．00×10^11m3／a、0．14×10^11m3／a和1．21×10^11m3／a，仅占三大河流总径流量的4．83％、2．55％和14．61％。对于包括恒河、布拉马普特拉河和梅克纳河在内的恒河三角洲水系，中国境内产水量的比例只有8．88％。

英文摘要：

The Himalayas possesses a number of large rivers, most of which are international ones, and thus initiates increasingly outstanding water contradictions among riparian states. Because of the rarely gauged condition and poor data sharing level, it＇s very difficult to obtain hydrological and water resources information of this region. Based on public global water resources data as well as social and economic data and ARCGIS as a technical tool, this paper calculates river length, basin area, annual precipitation, annual surface runoff, population, cultivated area and GDP of three large Himalayan international rivers, namely the Indus river, the Ganges river and the Yalu Tsangpo-Brahmaputra river as well as their international tributaries, and set up a Himalayan water resources information system. Analysis showes that surface runoff,population, cultivated area and GDP within the territory of China occupy a very small proportion in the three river systems. The natural surface runoff of the Indus river, the Ganges river and the Yalu Tsangpo-Brahmaputra river are 207 km3/y, 550 km3/y and 828 km3/y respectively, and of which only 10 km3/y,14 kma/y and 121 km3/y is produced in china,account for 4. 83%,2. 55% and 14. 61%,respectively. For Ganges Delta drainage system,which includes Ganges river,Brahmaputra river and Megsha river, water from China makes up only 8. 8% of the total natural runoff.