基于CMADS驱动SWAT模型的富春江水库控制流域水量平衡模拟

doi:10.3969/j.issn.1673-503X.2019.04.015

Abstract

Abstract: The runoff distribution and water balance process in Fuchunjiang Reservoir watershed basin regarded as the studied area from 2008 to 2016 were investigated based on the daily runoff simulated by SWAT model driven with the China Meteorological Assimilation Datasets (CMADS).The results show that the SWAT model using CMADS as meteorological forcing data has a good performance in simulating the variation of runoff in Fuchunjiang Basin.During the verification period,the Nash-Sutcliffe efficiency coefficient and the coefficient of determination for the daily runoff simulation are respectively above 0.70 and 0.75,which reaches the model evaluation criteria.Among the water balance elements of the basin,the main output items of the surface runoff i.e.the surface runoff and the actual evapotranspiration account for 57.2% and 36.2% of annual precipitation,respectively.Compared with the precipitation,the interannual variation of actual evapotranspiration is small.In addition,the maximums of the precipitation,the surface runoff,the soil water supply,the lateral flow,and the actual evapotranspiration appear in June,and their minimums appear in January.The surface runoff is the dominant component of the basin runoff,and its monthly change trend is consistent with that of precipitation.Whereas the base flow is much less than surface runoff,and the response of the monthly base flow to precipitation is not sensitive.

Key words: SWAT model, CMADS, Runoff, Fuchunjiang Reservoir watershed

CLC Number:

P333

LUO Yue-zhen, GU Ting-ting, PAN Ya-ying, ZHANG Qing. Simulation of basin water balance controlled by Fuchunjiang Reservoir watershed based on SWAT model driven by CMADS[J]. Journal of Meteorology and Environment, 2019, 35(4): 106-112.

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Simulation of basin water balance controlled by Fuchunjiang Reservoir watershed based on SWAT model driven by CMADS

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