【摘要】 分析了黄河流域1956—2000年长系列降水量、蒸发量等水文资料,计算了河川天然径流量和分区水资源量并进行了评价。结果表明:现状条件下黄河流域年均天然径流量为534.8亿m3,分区水资源量为719.4亿m3;黄河流域水资源存在水少沙多、水沙异源、水沙关系不协调、年际变化大、年内分配集中、连续枯水段长及水土资源分布不一致等特点。更多还原

【Abstract】 The precipitation and evaporation in 1956-2000 in the Yellow River Basin were analyzed,then natural river runoff and divisional water resources were calculated and evaluated.The results show that natural runoff is 53.48 billion m3 and water resources in all districts were 71.94 billion m3 in this period.The features of water resources are less water and more sediment,different sources of water and silt,discord of water-silt relation,great variations between years,centralized distribution in a year,long continuous lower flow,and inconsistent distribution of water and soil sources exist in the Yellow River Basin.更多还原