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《Arid Land Geography》 2006-01
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Prediction and analysis of water resources demands in the arid areas in Northwest China - A case study in Yan'an City,Shaanxi Province

BAO Wei-feng,HUANG Jie-sheng,Xie Hua(State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan 430072,Hubei,China)  
Yan’an City(900~1200 m a.s.l.and 1000 m a.s.l.in average) is located in a hilly-valley region of the Loess Plateau in Shanxi Province,where it belongs to the arid climate of the transitional area between the typical warm-temperate zone and the mid-temperate zone,the annual temperature and the frost-free period vary in ranges of 7.8℃~10.6℃ and 150~209 days,and the annual precipitation is 550 mm and occurs mainly during the period from June to September.Under Yan’an City there are 13 counties and districts,the population was 2.056×106 in 2000,and its total land area is 3.7×104 km2.The area of forests is 1.846×106 ha,and the vegetation coverage is 42.9%.Yan’an is one of the regions with the most serious soil erosion in the middle reaches of the Yellow River,and is also one of the main sand-dust source areas in the Yellow River Watershed,and the area of soil erosion is 2.88×104 km2 and occupies 77.84% of the total land area in the Yan’an region.In this paper,the models of water demands for general life,production and ecology are separately developed based on considering the stability of the artificial ecological landscapes and the local conditions in northwest China.The water demands in all the counties and districts of Yan’an City in different years are calculated,the increase situation of water demands is analyzed,and some suggestions and measures are put forward for the rational utilization of water resources in the Yan’an region.
【Fund】: 黄委会“十五”治黄重大科技项目(2002Z02)
【CateGory Index】: TV213.4
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