JIA Shao-feng, ZHANG Shi-feng
(Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101，China)
Abstract: Yellow River is one of the rivers with scarce water resources. There are a few important research results about the water supply capacity in 2010, but the estimated amount of water supply differs greatly. The highest is 69.2 billion m3 while the lowest，58 billion m3. Furthermore, the substantial drop of the natural runoff occurred in the 1990s.As a result, the runoff amount in a mean hydrological year is 11 billion m3 less than that of the historic mean year level. Therefore it is very urgent to make it clear that how much the water supply would be in the 2010 in the Yellow River since it concerns the sustainable utilization strategy of water resource in the Yellow River drainage basin. The research result of this paper shows that the water supply in 2010 is only 55～56 billion m3 in a mean hydrological year, among which surface runoff accounts for 39～40 billion m3 and groundwater takes another 16 billion m3. This result is 2～3 billion m3 less than the 58 billion m3，which is the least figure of the aforementioned results, and is 20%, or 14 billion m3 less than the largest 69.2 billion m3. This poses an even more serious question to the water demand-supply balance strategy.
Keywords: Yellow River drainage basin; water supply; water resources
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