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以汾河上游流域为研究对象,用宁武、静乐、岚县、娄烦和古交等气象站和水文站2000到2011年间的气象、水文等资料,结合DEM数据、LUCC数据、土壤空间分布,构建汾河上游水文模型.应用LH-OAT法对其进行参数敏感性试验,应用SUFI2法和手动调参相结合的方法对模型参数进行率定和验证,然后进行径流模拟.结果表明,在模型率定与验证期,除了2006-2011年干季,受汾河上游头马营引黄调水影响,使其模拟值与实测值相比偏小以外,总体来说模拟与实测径流的Nash-Sutcliffe效率系数分别为0.78和0.79,相对误差为5.8%和8.7%,均小于10%,径流量和降水等指标对于土地利用/覆被变化比较敏感.SWAT模型在汾河上游模拟效果较好,有较强的适用性.
Taking the upper reaches of Fenhe River as the research object, this paper took the meteorological and hydrological data from Ningwu, Jingle, Lanxian, Loufan and Gujiao stations as well as meteorological and hydrological data from 2000 to 2011, combining the DEM data, LUCC data, soil space The hydrological model of the upper reaches of Fenhe River was established and the parameters sensitivity test was carried out by LH-OAT method. The parameters of the model were calibrated and validated by the combination of SUFI2 and manual adjustment, and the runoff simulation was carried out. In the model calibration and verification period, except for the dry season of 2006-2011, influenced by the Yellow River water diversification at Tamama Camp on the upper Fen River, the simulated and measured values are smaller than the measured values. Generally speaking, the simulated and measured runoff Nash The Sutcliffe efficiency coefficients are 0.78 and 0.79 respectively, and the relative errors are 5.8% and 8.7%, both less than 10%. Runoff and precipitation are more sensitive to land use / cover changes. The SWAT model has better simulation results in the upper Fenhe River , There is a strong applicability.