| 滁州花山水文实验流域径流与氮素耦合模拟研究 |
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| 引用本文： | 王建群,王洋,郭昆,刘松平.滁州花山水文实验流域径流与氮素耦合模拟研究[J].水文,2015,35(1):40-44. |
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| 作者姓名： | 王建群 王洋 郭昆 刘松平 |
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| 作者单位： | 河海大学水文水资源学院 |
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| 基金项目： | 水利部公益性行业科研专项经费项目(201201026) |
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| 摘 要： | 采用SWAT模型方法对滁州花山水文实验流域进行了径流与氮素耦合模拟,探讨了流域土地利用对氮素输移的影响。构建了花山水文实验流域SWAT模型,采用2008年1月~2013年12月的降雨、径流等数据对径流模型进行率定和验证,以2012年5月~2013年12月的氮浓度监测数据对氮负荷模型进行验证。利用所建立的模型对现状土地利用情形和土地利用变化情景假设下进行了径流与氮素耦合模拟,计算了现状和不同土地利用情景假设下流域的径流深和氮负荷。结果表明:汛期的氮流失量占全年氮流失的比重较大,每年的汛期是控制氮流失的关键时期;旱地的氮流失潜力较水田大,林地的增加对氮负荷具有一定的消减作用;控制氮肥的使用,加强水土保持能力,可以有效减少流域氮负荷。
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| 关 键 词： | 水文实验流域 氮输移 SWAT模型 土地利用 |
| 收稿时间： | 2014/8/6 0:00:00 |
Coupled Simulation of Runoff and Nitrogen in Huashan Hydrological Experimental Watershed |
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| WANG Jianqun,WANG Yang,GUO Kun,LIU Songping.Coupled Simulation of Runoff and Nitrogen in Huashan Hydrological Experimental Watershed[J].Hydrology,2015,35(1):40-44. |
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| Authors: | WANG Jianqun WANG Yang GUO Kun LIU Songping |
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| Institution: | WANG Jianqun;WANG Yang;GUO Kun;LIU Songping;College of Hydrology and Water Resources,Hohai University; |
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| Abstract: | In this paper, SWAT model was used to simulate runoff and nitrogen coupling in Huashan hydrological experimental watershed, and effects of the different land use changes on nitrogen transportation was studied. SWAT model was used in the watershed, the hydro- meteorological data from January, 2008 to December, 2013 and the concentration monitoring data of Ammonia nitrogen and nitrate nitrogen from May, 2012 to December, 2013 in the watershed were used to calibrate the model. The model was used to simulate runoff and nitrogen coupling under the present situation and the assumption of scenarios of land use change, the runoff and nitrogen load of the watershed were calculated. The results show that nitrogen loss in the rainy season accounted for a larger proportion of nitrogen loss in a year, the annual rainy season is the key period of controlling nitrogen loss. The potential of nitrogen loss in dry farmland is larger than that in paddy field. The nitrogen load is reduced by the increasing wood - land. Control of nitrogen fertilizer use and strengthen of the ability of soil and water conservation can effectively reduce the nitrogen load in the wa - tershed. |
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| Keywords: | hydrological experimental watershed nitrogen transportation SWAT model agriculture catchment land use |
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