Mitigation of lake eutrophication: Loosen nitrogen control and focus on phosphorus abatement

CORC > 水生生物研究所 > 中科院水生所知识产出（2009年前） > 期刊论文

	Mitigation of lake eutrophication: Loosen nitrogen control and focus on phosphorus abatement
	Wang, Haijun; Wang, Hongzhu
刊名	PROGRESS IN NATURAL SCIENCE
	2009-10-10
卷号	19 期号:10 页码:1445-1451
关键词	Lake eutrophication Cyanobacteria blooms Lake restoration
ISSN号	1002-0071
通讯作者	Wang, HZ, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
中文摘要	w Traditionally, nitrogen control is generally considered an important component of reducing lake eutrophication and cyanobacteria blooms. However, this viewpoint is refuted recently by researchers in China and North America. In the present paper, the traditional viewpoint of nitrogen control is pointed out to lack a scientific basis: the N/P hypothesis is just a subjective assumption; bottle bioassay experiments fail to simulate the natural process of nitrogen fixation. Our multi-year comparative research in more than 40 Yangtze lakes indicates that phosphorus is the key factor determining phytoplankton growth regardless of nitrogen concentrations and that total phytoplankton biomass is determined by total phosphorus and not by total nitrogen concentrations. These results imply that, in the field, nitrogen control will not decrease phytoplankton biomass. This finding is supported by a long-term whole-lake experiment from North America. These outcomes can be generalized in terms that a reduction in nitrogen loading may not decrease the biomass of total phytoplankton as it can stimulate blooms of nitrogen-fixing cyanobacteria. To mitigate eutrophication, it is not nitrogen but phosphorus that should be reduced, unless nitrogen concentrations are too high to induce direct toxic impacts on human beings or other organisms. Finally, details are provided on how to reduce controls on nitrogen and how to mitigate eutrophication. (C) 2009 National Natural Science Foundation of China and Chinese Academy of Sciences. Published by Elsevier Limited and Science in China Press. All rights reserved.
英文摘要	w Traditionally, nitrogen control is generally considered an important component of reducing lake eutrophication and cyanobacteria blooms. However, this viewpoint is refuted recently by researchers in China and North America. In the present paper, the traditional viewpoint of nitrogen control is pointed out to lack a scientific basis: the N/P hypothesis is just a subjective assumption; bottle bioassay experiments fail to simulate the natural process of nitrogen fixation. Our multi-year comparative research in more than 40 Yangtze lakes indicates that phosphorus is the key factor determining phytoplankton growth regardless of nitrogen concentrations and that total phytoplankton biomass is determined by total phosphorus and not by total nitrogen concentrations. These results imply that, in the field, nitrogen control will not decrease phytoplankton biomass. This finding is supported by a long-term whole-lake experiment from North America. These outcomes can be generalized in terms that a reduction in nitrogen loading may not decrease the biomass of total phytoplankton as it can stimulate blooms of nitrogen-fixing cyanobacteria. To mitigate eutrophication, it is not nitrogen but phosphorus that should be reduced, unless nitrogen concentrations are too high to induce direct toxic impacts on human beings or other organisms. Finally, details are provided on how to reduce controls on nitrogen and how to mitigate eutrophication. (C) 2009 National Natural Science Foundation of China and Chinese Academy of Sciences. Published by Elsevier Limited and Science in China Press. All rights reserved.
学科主题	Multidisciplinary Sciences
WOS标题词	Science & Technology ; Technology
类目[WOS]	Materials Science, Multidisciplinary ; Multidisciplinary Sciences
研究领域[WOS]	Materials Science ; Science & Technology - Other Topics
关键词[WOS]	NUTRIENT ; ECOSYSTEMS ; RECOVERY ; FIXATION
收录类别	SCI
资助信息	State Key Basic Research and Development Plan of China [2008CB418006]; Chinese Academy of Sciences [KZCX1-YW-14-1, KZCX2-YW-426-02]
语种	英语
WOS记录号	WOS:000270021300037
公开日期	2010-10-13
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/152342/7574]
专题	水生生物研究所_中科院水生所知识产出（2009年前）_期刊论文
作者单位	Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
推荐引用方式 GB/T 7714	Wang, Haijun,Wang, Hongzhu. Mitigation of lake eutrophication: Loosen nitrogen control and focus on phosphorus abatement[J]. PROGRESS IN NATURAL SCIENCE,2009,19(10):1445-1451.
APA	Wang, Haijun,&Wang, Hongzhu.(2009).Mitigation of lake eutrophication: Loosen nitrogen control and focus on phosphorus abatement.PROGRESS IN NATURAL SCIENCE,19(10),1445-1451.
MLA	Wang, Haijun,et al."Mitigation of lake eutrophication: Loosen nitrogen control and focus on phosphorus abatement".PROGRESS IN NATURAL SCIENCE 19.10(2009):1445-1451.