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, Nengwa ; Peng, Benrong ; Hong, Huashe ; Turyaheebwa, Nicholas ; Cui, Shenghui ; Mo, Xiujuan ; Chen NW(陈能汪) ; Hong HS(洪华生) | |
刊名 | http://dx.doi.org/10.1016/j.ocecoaman.2012.07.013 |
2013 | |
关键词 | Agricultural wastes Agriculture Eutrophication Nutrients Phosphate fertilizers Rivers Water management Water quality Watersheds |
英文摘要 | 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 livestocks 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. ? 2012 Elsevier Ltd. |
语种 | 英语 |
出版者 | Elsevier Ltd |
内容类型 | 期刊论文 |
源URL | [http://dspace.xmu.edu.cn/handle/2288/89933] |
专题 | 环境生态-已发表论文 |
推荐引用方式 GB/T 7714 | Chen, Nengwa,Peng, Benrong,Hong, Huashe,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, Nengwa.,Peng, Benrong.,Hong, Huashe.,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, Nengwa,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). |
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