| 基于SWAT模型的三峡库区香溪河非点源氮磷负荷模拟 |
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| 引用本文： | 宋林旭,刘德富,肖尚斌,过寒超,崔玉洁,陈玲. 基于SWAT模型的三峡库区香溪河非点源氮磷负荷模拟[J]. 环境科学学报, 2013, 33(1): 267-275 |
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| 作者姓名： | 宋林旭 刘德富 肖尚斌 过寒超 崔玉洁 陈玲 |
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| 作者单位： | 1. 水利与环境学院,三峡大学,宜昌443002;三峡库区生态环境教育部工程研究中心,三峡大学,宜昌443002
2. 三峡库区生态环境教育部工程研究中心,三峡大学,宜昌443002 |
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| 基金项目： | 国家自然科学基金面上项目(No.51179095,50925932,51009080,51009081);国家水体污染控制与治理科技重大专项(No.2009ZX07104-001,2009ZX07104-004) |
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| 摘 要： | 三峡水库蓄水后,水动力条件改变下营养盐的过量输入导致部分支流库湾水华现象及水体富营养化问题严重.本文以香溪河为研究示范区,基于GIS平台建立流域下垫面空间数据库,以氮磷为研究对象,应用SWAT模型对流域三大主要水系及涉及35个子流域进行2000-2009年径流、营养盐输出模拟研究,并对实测数据和模拟结果进行分析,结果表明:径流模拟结果校验阶段的效率系数0.65和0.86,确定系数是0.78和0.91,模拟效果较好,径流和营养盐负荷受降雨影响呈正相关关系,在丰水年和丰水季节较大,2000-2009年期间TN和TP年均负荷分别是2640.64和300.01 t,在2007年达到最大值,分别是3475.96和399.20 t,在2005年为最小值,分别是2036.72和226.44 t,TN和TP负荷的贡献率高岚水系＞古夫水系＞南阳水系,支流TN和TP输出强度空间差异较大,空间分布差异系数分别是0.34和0.58,TN最大值和最小值是29.39 kg·hm-2·a-1和3.86 kg·hm-2·a-1,TP最大值和最小值分别是4.90 kg·hm-2·a-1和0.54 kg·hm-2·a-1.
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| 关 键 词： | 氮磷 香溪河 三峡库区 SWAT 径流 |
| 收稿时间： | 2011-12-29 |
| 修稿时间： | 2012-03-23 |
Study on non-point nitrogen and phosphorus load from Xiangxi River in the Three Gorges Reservoir area based on SWAT |
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| SONG Linxu,Liu Defu,XIAO Shangbin,GUO Hanchao,CUI Yujie and CHEN Ling. Study on non-point nitrogen and phosphorus load from Xiangxi River in the Three Gorges Reservoir area based on SWAT[J]. Acta Scientiae Circumstantiae, 2013, 33(1): 267-275 |
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| Authors: | SONG Linxu Liu Defu XIAO Shangbin GUO Hanchao CUI Yujie CHEN Ling |
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| Affiliation: | 1. Hydraulic and Environmental Engineer College, Three Gorges University, Yichang 443002;2. Engineering Research Center of Eco-Environment in Three Gorges Reservoir Region, Ministry of Education, Three Gorges University, Yichang 443002;Engineering Research Center of Eco-Environment in Three Gorges Reservoir Region, Ministry of Education, Three Gorges University, Yichang 443002;1. Hydraulic and Environmental Engineer College, Three Gorges University, Yichang 443002;2. Engineering Research Center of Eco-Environment in Three Gorges Reservoir Region, Ministry of Education, Three Gorges University, Yichang 443002;1. Hydraulic and Environmental Engineer College, Three Gorges University, Yichang 443002;2. Engineering Research Center of Eco-Environment in Three Gorges Reservoir Region, Ministry of Education, Three Gorges University, Yichang 443002;1. Hydraulic and Environmental Engineer College, Three Gorges University, Yichang 443002;2. Engineering Research Center of Eco-Environment in Three Gorges Reservoir Region, Ministry of Education, Three Gorges University, Yichang 443002;1. Hydraulic and Environmental Engineer College, Three Gorges University, Yichang 443002;2. Engineering Research Center of Eco-Environment in Three Gorges Reservoir Region, Ministry of Education, Three Gorges University, Yichang 443002 |
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| Abstract: | |
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| Keywords: | nitrogen and phosphorus Xiangxi River the Three Gorges Reservoir SWAT runoff |
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