| 丹江口库区典型小流域面源污染生态阻控系统效果评估 |
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| 引用本文： | 王超,贾海燕,雷俊山,徐建锋,汪涛,柳根,尹炜.丹江口库区典型小流域面源污染生态阻控系统效果评估[J].水土保持学报,2021,35(3):61-68. |
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| 作者姓名： | 王超 贾海燕 雷俊山 徐建锋 汪涛 柳根 尹炜 |
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| 作者单位： | 1. 长江水资源保护科学研究所, 武汉 430051;2. 长江水利委员会湖库水源地面源污染生态调控重点实验室, 武汉 430051;3. 广西壮族自治区水利科学研究院, 南宁 530023 |
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| 基金项目： | 国家自然科学基金项目（U2040210）；国家重点研发计划项目（2019YFC0408901，2019YFC0408904） |
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| 摘 要： | 小流域面源生态阻控是控制农业面源的重要手段。选择丹江口库区典型小流域钱家沟为对象,通过小流域出口水质监测,阻控措施进出水监测,以及负荷削减核算,对面源生态阻控系统进行效果评估。结果表明:钱家沟生态阻控系统稳定半年后,小流域出口总氮(TN)、硝态氮(NO_3-N)、铵态氮(NH_3-N)、高锰酸盐指数(COD_(Mn))、总磷(TP)下降比例分别为38%,23%,63%,49%和16%。各阻控措施中,表面流湿地对NH_3-N(54%)、TP(70%)和TSS(78%)去除率较高,生态塘、生态沟渠对TN(36%,39%)、NO_3-N(43%,37%)、COD_(Mn)(63%,56%)去除率较高,小型人工湿地对TN(56%)、NH_3-N(85%)、COD_(Mn)(84%)、TP(57%)和TSS(87%)均具有较高的去除率,生态滤墙主要对TSS(81%)去除率较高。阻控系统对COD_(Mn)、NH_3-N、TN、TP负荷的总体削减率分别为56%,73%,63%和59%。总体来看,小流域面源生态阻控系统能够有效降低主要污染物输出浓度,对面源污染阻控效果较好。
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| 关 键 词： | 丹江口 南水北调 小流域 面源 生态阻控 |
| 收稿时间： | 2021/1/5 0:00:00 |
Evaluation on the Effect of Ecological Control System for Non-point Source Pollution in Typical Small Watershed in Danjiangkou Reservoir Area |
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| WANG Chao,JIA Haiyan,LEI Junshan,XU Jianfeng,WANG Tao,LIU Gen,YIN Wei.Evaluation on the Effect of Ecological Control System for Non-point Source Pollution in Typical Small Watershed in Danjiangkou Reservoir Area[J].Journal of Soil and Water Conservation,2021,35(3):61-68. |
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| Authors: | WANG Chao JIA Haiyan LEI Junshan XU Jianfeng WANG Tao LIU Gen YIN Wei |
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| Institution: | 1. Changjiang Water Resources Protection Institute, Wuhan 430051;2. Key Laboratory of Ecological Regulation of Non-point Source Pollution in Lake and Reservoir Water Sources, Wuhan 430051;3. Guangxi Institute of Water Resource Research, Nanning 530023 |
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| Abstract: | Ecological control of non-point source in small watershed is an important means to control agricultural non-point source. Qianjiagou, which is a typical small watershed in Danjiangkou reservoir area, was selected as the object, and the effect of non-point source ecological resistance control system was evaluated by monitoring the water quality at the outlet of the small watershed, monitoring the inflow and outflow water of each control measures, and calculating pollutant load reduction. The results showed that after the ecological resistance control system of Qianjiagou was stable for half a year, the TN, NO3-N, NH3-N, CODMn and TP in the outflow of the small watershed decreased by 38%, 23%, 63%, 49% and 16%, respectively. Among the resistance control measures, surface flow wetland had higher removal rates of NH3-N (54%), TP (70%) and TSS (78%), the ecological pond and ecological ditch had higher removal rates of TN (36%, 39%), NO3-N (43%, 37%) and CODMn (63%, 56%), the small artificial wetland had higher removal rates of TN (56%), NH3-N(85%), CODMn (84%), TP(57%) and TSS(87%) and the ecological filter wall had higher removal rate of TSS (81%). The overall reduction rates of CODMn, NH3-N, TN and TP loads by the resistance control system were 56%, 73%, 63% and 59%, respectively. |
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| Keywords: | Danjiangkou South-to-North Water Diversion Project small watershed non-point source pollution ecological control |
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