Nutrient enrichment and N:P ratio decline in a coastal bay-river system in southeast China: The need for a dual nutrient (N and P) management strategy

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	Nutrient enrichment and N:P ratio decline in a coastal bay-river system in southeast China: The need for a dual nutrient (N and P) management strategy
	Chen, Nengwang ; Peng, Benrong ; Hong, Huasheng ; Turyaheebwa, Nicholas ; Cui, Shenghui ; Mo, Xiujuan ; Chen NW(陈能汪) ; Peng BR(彭本荣) ; Hong HS(洪华生)
刊名	http://dx.doi.org/10.1016/j.ocecoaman.2012.07.013
	2013
关键词	HARMFUL ALGAL BLOOMS JIULONG RIVER EUTROPHICATION NITROGEN WATERS CONSEQUENCES PHOSPHORUS PHYTOPLANKTON INDICATORS ESTUARINE
英文摘要	National Natural Science Foundation of China [40810069004, 41076042]; Fundamental Research Funds for the Central Universities [2012121053]; Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences [KLUEH201008]; Eutrophication and harmful algal blooms (HAB) have become the primary water quality concerns in China. A comprehensive analysis was conducted using a dataset obtained from long-term monitoring of a coastal bay-river system in southeast China (Xiamen Bay-Jiulong River Basin), to examine the nutrient [nitrogen (N) and phosphorus (P)] dynamics and the management options. The analysis showed that increasing human stresses and external nutrient loads over the past 30 years were the main causes of water degradation and eutrophication. A significant decline of N:P ratio was observed in both river and estuarine waters since the 1990s due to relatively high P loadings as a consequence of waste discharges from the proliferating husbandry of livestocics and the application of excessive phosphate fertilizers to cash crops. Continued nutrient enrichment and the decline of N:P ratio have changed the nutrient stoichiometry and supply ratio in waters, which have increased the risk of nutrient-enhanced algal bloom. According to the findings and current knowledge concerning eutrophication and HAB processes, a dual nutrient (N and P) management strategy is necessary for management of water quality in the Xiamen Bay-Jiulong River Basin with a focus on animal wastes in the north Jiulong tributary and over-fertilization in the west Jiulong tributary. (C) 2012 Elsevier Ltd. All rights reserved.
语种	英语
出版者	ELSEVIER SCI LTD
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/89927]
专题	环境生态－已发表论文
推荐引用方式 GB/T 7714	Chen, Nengwang,Peng, Benrong,Hong, Huasheng,et al. Nutrient enrichment and N:P ratio decline in a coastal bay-river system in southeast China: The need for a dual nutrient (N and P) management strategy[J]. http://dx.doi.org/10.1016/j.ocecoaman.2012.07.013,2013.
APA	Chen, Nengwang.,Peng, Benrong.,Hong, Huasheng.,Turyaheebwa, Nicholas.,Cui, Shenghui.,...&洪华生.(2013).Nutrient enrichment and N:P ratio decline in a coastal bay-river system in southeast China: The need for a dual nutrient (N and P) management strategy.http://dx.doi.org/10.1016/j.ocecoaman.2012.07.013.
MLA	Chen, Nengwang,et al."Nutrient enrichment and N:P ratio decline in a coastal bay-river system in southeast China: The need for a dual nutrient (N and P) management strategy".http://dx.doi.org/10.1016/j.ocecoaman.2012.07.013 (2013).