基于SWAT模型的洪湖流域供水資源模擬研究

doi:10.3969/2013jms.0035

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基于SWAT模型的洪湖流域供水資源模擬研究
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                        10.3969/2013jms.0035
                    
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基金項目:中國氣象局氣候變化專項（CCSF201205）

Water resources simulation based on SWAT model in Honghu Lake Basin

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利用SWAT分布式水文模型，對洪湖流域1961—2011年供水資源變化情況進行模擬。結果表明：SWAT模型對洪湖流域供水資源模擬適用性良好。近51 a流域年平均地表徑流和降水量增加趨勢相當，且降水量峰值對應地表徑流和地下徑流均較高。流域在1960s、1970s相對偏枯，1980s后降水相對豐沛，流域呈現(xiàn)由干轉濕的變化。進入21世紀后，流域又趨于偏枯。流域季節(jié)降水量、地表徑流、地下徑流、蒸散發(fā)量及土壤含水量變化最大值均出現(xiàn)在夏季，最小值均出現(xiàn)在冬季，但豐、枯年季節(jié)分配不同，各要素月季節(jié)分布差異較大。洪湖年均入湖水量呈略增加趨勢，春、夏季增加趨勢較為明顯。

Abstract:

Based on the SWAT(Soil and Water Assessment Tool)model, the variation of water resources in Honghu Lake Basin from 1961 to 2011 was simulated. The results indicate that the SWAT model was appropriate to simulate the water resources in Honghu Lake Basin; the increasing trend of the surface runoff for nearly 51 a was nearly the same as that of the precipitation. In addition, the peak of the precipitation was in accordance with the high value of surface and underground runoff. The basin became drier in 1960s and 1970s, but after 1980s, it changed from dry to wet because of the abundant rainfall. Since the 21th century the whole basin tended to be drier again. The maximum changes in the values of the rain, surface runoff, underground runoff, actual evapotranspiration and the soil water all appeared in summer, but all these minimum values appeared in winter. However, water resources difference existed between high and low flow years, and the monthly and seasonal distribution of all elements differed greatly from each other. Therefore, the yearly water into the Honghu Lake was found to be on the slight rise and that was more obvious in spring and summer.

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王苗,劉敏,夏智宏.基于SWAT模型的洪湖流域供水資源模擬研究.氣象科學,2014,34(5):515-521 WANG Miao, LIU Min, XIA Zhihong. Water resources simulation based on SWAT model in Honghu Lake Basin. Journal of the Meteorological Sciences,2014,34(5):515-521

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收稿日期:2013-01-10
最后修改日期:2013-04-17
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在線發(fā)布日期: 2014-10-15
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