文章摘要
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
丹江口库区典型小流域面源污染生态阻控系统效果评估
Evaluation on the Effect of Ecological Control System for Non-point Source Pollution in Typical Small Watershed in Danjiangkou Reservoir Area
投稿时间:2021-01-05  
DOI:10.13870/j.cnki.stbcxb.2021.03.009
中文关键词: 丹江口  南水北调  小流域  面源  生态阻控
英文关键词: Danjiangkou  South-to-North Water Diversion Project  small watershed  non-point source pollution  ecological control
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)
作者单位E-mail
王超1,2, 贾海燕1,2, 雷俊山1,2, 徐建锋1,2, 汪涛3, 柳根1,2, 尹炜1,2 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 
2000yinwei@163.com 
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中文摘要:
      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(NO3-N)、铵态氮(NH3-N)、高锰酸盐指数(CODMn)、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NH3-N (54%)、TP (70%)和TSS (78%)去除率较高,生态塘、生态沟渠对TN (36%,39%)、NO3-N (43%,37%)、CODMn(63%,56%)去除率较高,小型人工湿地对TN (56%)、NH3-N (85%)、CODMn(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CODMn、NH3-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。
英文摘要:
      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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