| 基于WEAP模型的西苕溪流域水质安全保障方案 |
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| 引用本文： | 李燕,李恒鹏.基于WEAP模型的西苕溪流域水质安全保障方案[J].水科学进展,2010,21(5):666-673. |
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| 作者姓名： | 李燕 李恒鹏 |
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| 作者单位： | 1.中国科学院南京地理与湖泊研究所, 湖泊与环境国家重点实验室, 江苏, 南京, 210008; |
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| 基金项目： | 国家重点基础研究发展计划(973)资助项目，中国科学院知识创新工程重要方向资助项目，江苏省自然科学基金资助项目 |
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| 摘 要： | 针对西苕溪流域水质安全问题,基于WEAP建模平台,构建了西苕溪流域水资源评估与规划模型。在模型验证基础上,分析了西苕溪流域2001～2020年河道水功能目标满足度及水供需关系,识别了流域水资源利用存在的问题,并探讨了水源地和中下游区水质安全保障措施及其改善水质的效用,在此基础上提出了西苕溪流域水质安全保障方案。研究表明:TN是影响水源地供水安全的限制性因素,TN、TP是影响河道水功能的重要指标。通过综合实施废水处理厂、节水型设备、退耕还林等水资源管理措施能起到较好地削减TN产出的效果,水源地河道TN浓度降低,基本上能保证全年实现河道Ⅲ类水功能目标,中下游河道TP、TN浓度亦能达到Ⅲ类水功能要求。
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| 关 键 词： | 水质安全 水供需关系 管理方案 WEAP模型 西苕溪流域 |
| 收稿时间： | 2009-07-22 |
A WEAP-based model for the management of water quality and safety in Xitiaoxi watershed |
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| LI Yan,LI Heng-peng.A WEAP-based model for the management of water quality and safety in Xitiaoxi watershed[J].Advances in Water Science,2010,21(5):666-673. |
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| Authors: | LI Yan LI Heng-peng |
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| Institution: | 1.State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China;2.Department of Geography, University College London, London WC1E 6BT, United Kingdom |
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| Abstract: | The Water Evaluation and Planning(WEAP)model is applied to the itiaoxi watershed for an integrated water resources management study.The calibrated WEAP model is used to study the issues concerning the water quality and safety in the watershed for the period 2001-2020.The study includes the ecological function of river systems,quantification of future water demand,as well as sustainable water management practices.Problems associated with the current practices of water management are identified.The study finds that the water quality parameter total nitrogen(TN) is a restrictive factor that affects the safety of water supply in the riverhead protection zone.While,TN and total phosphorus(TP) are the factors that regulate the water function in the middle to lower reach of Xitiaoxi River.We propose that a good and efective integrated water management practice over a watershed should include wastewater treamtent plants,water saving devices,as well as implementation plans for conversion of farm land to forests to reduce the concentrations of TN and TP in the river system.Such a reduction in TN and TP concentrations could ensure the water quality and function in the entire river system meeting the III level standard throughout a year. |
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| Keywords: | water quality safety water supply demand relations management practices WEAP model Xitiaoxi watershed |
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