| 洞庭湖湿地总氮总磷输入与滞留净化效应研究 |
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| 引用本文： | 席宏正,康文星.洞庭湖湿地总氮总磷输入与滞留净化效应研究[J].灌溉排水学报,2008,27(4). |
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| 作者姓名： | 席宏正 康文星 |
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| 作者单位： | 1. 中南林业科技大学,长沙,410004;湖南大学,长沙,410082
2. 中南林业科技大学,长沙,410004 |
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| 基金项目： | 中德财政合作湖南省洞庭湖生态造林项目(湘造援函 |
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| 摘 要： | 利用洞庭湖水文观测站、环境监测站和实地考察资料,分析了洞庭湖湿地对氮(N)、磷(P)污染的净化功能。结果表明,每年输入湿地全氮(TN)670132.47 t、全磷(TP)41103.85 t;滞留与净化TN 116033.27 t、TP6892.25 t;贮留净化率分别为17.31%和16.77%;大量的N、P储存在洞庭湖湿地中,对湿地本身是一种潜在的生态安全威胁;在输入洞庭湖湿地的N、P中,有54.76%N、44.30%P来自四水(湘、资、沅、澧4条江河)和三口(长江分洪流入的松滋、藕池和太平3口),有99%的N、P是由面源污染引起的,点源污染只占1%;因此,在洞庭湖湿地水污染的治理上,控制系统外水系输入比控制湿地周边更重要,控制面源污染比点源污染更重要。
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| 关 键 词： | 湿地 水污染 净化功能 洞庭湖 |
Input and Detention Purification Effect of Total Nitrogen and Total Phosphorus in Dongting Lake Wetland |
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| XI Hong-zheng,KANG Wen-xing.Input and Detention Purification Effect of Total Nitrogen and Total Phosphorus in Dongting Lake Wetland[J].Journal of Irrigation and Drainage,2008,27(4). |
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| Authors: | XI Hong-zheng KANG Wen-xing |
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| Institution: | XI Hong-zheng1,2,KANG Wen-xing1(1.Central South University of Forestry , Technology,Changsha 410004,China,2.Hunan University,Changsha 410082,China) |
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| Abstract: | Useing of Dongting Lake hydrological observation stations,environmental monitoring data and on-the-spot investigation,Analysising of the Dongting Lake wetland on the N,P pollution-purification.The results show that: enter the wetlands TN 670132.47 t,TP 41103.85 t every year;stranded and purification TN 116033.27 t,TP 6892.25 t;storage purification rate of 17.31 percent and 16.77 percent;A lot of N and P is stored in the Dongting Lake wetlands,it is a potential threat as the ecological safety to the wetlands... |
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| Keywords: | wetland water pollution purification Dongting Lake |
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