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淡水环境下3种红树植物对氮磷的去除效应应

Removal Efficiencies of Nitrogen and Phosphorus by Three Mangrove Plants Under Freshwater

投稿时间：2013-01-04 修订日期：2013-05-07

DOI：

英文关键词:mangrove plants nitrogen phosphorus removal efficiency

基金项目:深圳市水务局政府采购项目（SZZDZB 2009-A149F）。

作者	单位	E-mail
张志永	水利部中国科学院水工程生态研究所，水利部水工程生态效应与生态修复重点实验室，武汉 430079	zhangzy@mail.ihe.ac.cn
郑志伟	水利部中国科学院水工程生态研究所，水利部水工程生态效应与生态修复重点实验室，武汉 430079	Jianhua_p@126.com
彭建华^*	水利部中国科学院水工程生态研究所，水利部水工程生态效应与生态修复重点实验室，武汉 430079	Jianhuap@126.com
胡莲	水利部中国科学院水工程生态研究所，水利部水工程生态效应与生态修复重点实验室，武汉 430079
栾建国	广东省深圳市水务局，深圳 518036
陈文祥	水利部中国科学院水工程生态研究所，水利部水工程生态效应与生态修复重点实验室，武汉 430079
程郁春	水利部中国科学院水工程生态研究所，水利部水工程生态效应与生态修复重点实验室，武汉 430079
丁庆秋	水利部中国科学院水工程生态研究所，水利部水工程生态效应与生态修复重点实验室，武汉 430079

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中文摘要:

2010年7－12月，通过水培盆栽试验研究了桐花（Aegiceras corniculatum）、海莲（Bruguiera sexangula）和无瓣海桑（Sonneratia caseolaris）对生活污水的净化效果，设置3个浓度梯度，即A组（TN 为3.96 mg/L，TP为0.47 mg/L），B组（TN为 19.8 mg/L，TP 为2.35 mg/L）和C组（TN为 39.6 mg/L，TP为4.7 mg/L）。结果表明，随着水培时间的增加，水体盐度、总氮和总磷含量显著下降（P<0.001）。桐花、海莲和无瓣海桑对生活污水总氮去除率达74.5%～97.4%，总磷去除率达72.3%～95.7%。栽培红树植物的系统对氮和磷的去除率显著高于无植物系统，分别为无植物的1.28～3.20倍和1.24～2.71倍。红树植物氮和磷的质量分数分别为（6.81±0.85）mg/g和（1.41±0.46）mg/g。当污水浓度低时（A组），红树植物主要是通过累积作用去除水体氮和磷，占总去除效应的42.2%～63.3%和46.1%～85.8%；当污水浓度高时（C组），红树植物氮和磷的累积量仅占4.5%～10.4%和6.7%～14.9%。

英文摘要:

In order to research the purifying effects of domestic sewage, which caused by Aegiceras corniculatum, Bruguiera sexangula, and Sonneratia caseolaris, a water cultivation and pot experiment was carried out from July to December in 2010. In this experiment, three concentration groups were set. The A group represented the content of total nitrogen (TN) for 3.96 mg/L and total phosphorus (TP) for 0.47 mg/L. The B group represented the content of TN for 19.8 mg/L and TP for 2.35 mg/L. The C group implied the content of TN for 39.6 mg/L and TP for 4.7 mg/L. The results showed that the salinity, TN and TP in water rapidly declined with an increase of cultivation time (P<0.001). The removal efficiencies of TN and TP, which were caused by A. corniculatum, B. sexangula and S. caseolaris, ranged from 74.5% to 97.4% and from 72.3% to 95.7%, respectively. The removal rates of TN and TP in the mangrove plants cultivation system were 128%-320% times and 124%~271% times as high as those in non-plant system. The average of mass fraction of nitrogen and phosphorus in mangrove plants were（6.81±0.85） mg/g and （1.41±0.46）mg/g, respectively. In A group, which had a low sewage concentration, the accumulation action played an important role for removing nitrogen and phosphorus, and the removal rate ranged from 42.2% to 63.3% and from 46.1% to 85.8%, respectively. However, the TN and TP removal by plant absorption were rather small under the C group, which had a high sewage concentration, and the removal rate accounted for 4.5%-10.4% and 6.7%-14.9%, respectively.

张志永,郑志伟,彭建华,胡莲,栾建国,陈文祥,程郁春,丁庆秋.2013.淡水环境下3种红树植物对氮磷的去除效应应[J].水生态学杂志,34(5):47-53.

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