基于SWAT模型的北汝河流域非点源污染及其关键区域识别
【目的】了解北汝河流域非点源污染的时空分异，识别关键区域与重要时期，为防治非点源污染等提供理论依据。【方法】运用ArcGIS和ENVI软件与相关数据构建SWAT模型数据库，基于2001年与2014年土地利用数据，利用SWAT模型模拟了北汝河流域2001—2015年间非点源污染的时间动态与空间分异特征。【结果】SWAT模型适用于北汝河流域，校准期和验证期的R2和Ens均达到0.68以上，将该流域划分为70个子流域490个水文响应单元；以2001年与2014年土地利用数据模拟的泥沙、总氮、总磷负荷分别为29 088.761、78 870.342、1 025.753 t/a与25 315.033、7...
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| Published in | Guanʻgai paishui xuebao Vol. 39; no. 1; pp. 115 - 122 |
|---|---|
| Main Authors | , , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
Xinxiang City
Chinese Academy of Agricultural Sciences (CAAS) Farmland Irrigation Research Institute Editorial Office of Journal of Irrigation and Drainage
01.01.2020
河南农业大学林学院,郑州,450002 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1672-3317 |
| DOI | 10.13522/j.cnki.ggps.2019046 |
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| Abstract | 【目的】了解北汝河流域非点源污染的时空分异，识别关键区域与重要时期，为防治非点源污染等提供理论依据。【方法】运用ArcGIS和ENVI软件与相关数据构建SWAT模型数据库，基于2001年与2014年土地利用数据，利用SWAT模型模拟了北汝河流域2001—2015年间非点源污染的时间动态与空间分异特征。【结果】SWAT模型适用于北汝河流域，校准期和验证期的R2和Ens均达到0.68以上，将该流域划分为70个子流域490个水文响应单元；以2001年与2014年土地利用数据模拟的泥沙、总氮、总磷负荷分别为29 088.761、78 870.342、1 025.753 t/a与25 315.033、70 560.752、1 207.841 t/a；2014年总磷负荷略有增加，其他负荷均有所下降。【结论】北汝河流域非点源污染负荷在汛期较为严重，以东部、中部的耕地与居民聚集区为关键控制区，且在东部有扩大趋势。 |
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| AbstractList | X522; [目的]了解北汝河流域非点源污染的时空分异,识别关键区域与重要时期,为防治非点源污染等提供理论依据.[方法]运用ArcGIS和ENVI软件与相关数据构建SWAT模型数据库,基于2001年与2014年土地利用数据,利用SWAT模型模拟了北汝河流域2001—2015年间非点源污染的时间动态与空间分异特征.[结果]SWAT模型适用于北汝河流域,校准期和验证期的R2和Ens均达到0.68以上,将该流域划分为70个子流域490个水文响应单元;以2001年与2014年土地利用数据模拟的泥沙、总氮、总磷负荷分别为29088.761、78870.342、1025.753 t/a与25315.033、70560.752、1207.841 t/a;2014年总磷负荷略有增加,其他负荷均有所下降.[结论]北汝河流域非点源污染负荷在汛期较为严重,以东部、中部的耕地与居民聚集区为关键控制区,且在东部有扩大趋势. 【目的】了解北汝河流域非点源污染的时空分异，识别关键区域与重要时期，为防治非点源污染等提供理论依据。【方法】运用ArcGIS和ENVI软件与相关数据构建SWAT模型数据库，基于2001年与2014年土地利用数据，利用SWAT模型模拟了北汝河流域2001—2015年间非点源污染的时间动态与空间分异特征。【结果】SWAT模型适用于北汝河流域，校准期和验证期的R2和Ens均达到0.68以上，将该流域划分为70个子流域490个水文响应单元；以2001年与2014年土地利用数据模拟的泥沙、总氮、总磷负荷分别为29 088.761、78 870.342、1 025.753 t/a与25 315.033、70 560.752、1 207.841 t/a；2014年总磷负荷略有增加，其他负荷均有所下降。【结论】北汝河流域非点源污染负荷在汛期较为严重，以东部、中部的耕地与居民聚集区为关键控制区，且在东部有扩大趋势。 |
| Author | SHI Beibei WU Mingzuo SHI Mengmeng Yuan, YUAN LI, Huiping |
| AuthorAffiliation | 河南农业大学林学院,郑州,450002 |
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| Author_FL | SHI Beibei LI Huiping WU Mingzuo YUAN Yuan SHI Mengmeng |
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| Keywords | 关键区域 北汝河流域 SWAT模型 非点源污染 |
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| Snippet | 【目的】了解北汝河流域非点源污染的时空分异，识别关键区域与重要时期，为防治非点源污染等提供理论依据。【方法】运用ArcGIS和ENVI软件与相关数据构建SWAT模型数据库，基... X522; [目的]了解北汝河流域非点源污染的时空分异,识别关键区域与重要时期,为防治非点源污染等提供理论依据.[方法]运用ArcGIS和ENVI软件与相关数据构建SWAT模型数据库,基... |
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| SubjectTerms | Catchment scale Cultivated lands Data analysis Environmental perception Land pollution Land use Nonpoint source pollution Phosphorus Pollution Pollution control Pollution sources Population density River basins Rivers Spatial distribution |
| Title | 基于SWAT模型的北汝河流域非点源污染及其关键区域识别 |
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