| 浮床植物系统对富营养化水体中氮、磷净化特征的初步研究 |
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| 引用本文： | 周小平,王建国,薛利红,徐晓峰,杨林章. 浮床植物系统对富营养化水体中氮、磷净化特征的初步研究[J]. 应用生态学报, 2005, 16(11): 2199-2203 |
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| 作者姓名： | 周小平 王建国 薛利红 徐晓峰 杨林章 |
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| 作者单位： | 中国科学院南京土壤研究所, 南京 210008 |
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| 基金项目： | 国家“十五”重大科学技术攻关资助项目（2002AA601012）. |
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| 摘 要： | 以浮床空心菜(Ipomoea aquatica)、水芹(Oenanthe javanica)和无植物系统为对象,研究了其在富营养化水体中对N、P的去除及其N2O的排放情况.结果表明,浮床植物系统对水体中N、P具有良好的净化效果,植物组织所累积的N、P量分别占各自系统去除量的40.32%～63.87%,说明植物的同化吸收作用是N、P去除的主要途径.换水周期内浮床植物系统中硝化反应进行充分,而反硝化反应相对缓慢,导致系统具有较高的NH4+-N去除率,而产生NO3--N累积.植物的存在降低了系统中N2O的排放通量.生长较好的空心菜系统在换水前后平均N2O排放量最低,为17.14μgN·m-2h-1,空白高达8.08μgN·m-2h-1,水芹为37.38μg N·m-2·h-1.
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| 关 键 词： | 富营养化 浮床植物系统 N、P 硝化和反硝化 净化 N2O |
| 文章编号： | 1001-9332(2005)11-2199-05 |
| 收稿时间： | 2004-11-23 |
| 修稿时间： | 2005-05-23 |
N and P removal characters of eutrophic water body under planted float |
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| ZHOU Xiaoping,WANG Jianguo,XUE Lihong,XU Xiaofeng,YANG Linzhang. N and P removal characters of eutrophic water body under planted float[J]. The journal of applied ecology, 2005, 16(11): 2199-2203 |
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| Authors: | ZHOU Xiaoping WANG Jianguo XUE Lihong XU Xiaofeng YANG Linzhang |
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| Affiliation: | Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China |
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| Abstract: | The study on the N and P removal and N2O release of eutrophic water body under planted float Ipomoea aquatica and Oenanthe javanica showed that planted float had a good effect on the removal of N and P from eutrophic water body. The bioaccumulation of N and P by the plants accounted for 40.32% approximately 63.87% of the N and P removal, respectively, suggesting that plant uptake was the main removal process. Within the treating period, there was a rapid and sufficient nitrification but a slow and insufficient denitrification in the planted float system, and thereby, planted float system had a high NH4+-N removal rate and NO3(-)-N accumulation. The presence of planted float reduced the release flux of N2O, which was 17.14 microg N x m(-2) x h(-1) for Ipomoea aquatica, 37.38 microg N x m(-2) x h(-1) for Oenanthe javanica, and 85.08 microg N x m(-2) x h(-1) for the control. |
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| Keywords: | Eutrophication Planted float system N and P Nitrification and denitrification Removal N2O. |
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