Risk assessment of nitrogen discharge from a coastal watershed

CORC > 厦门大学 > 海洋环境－已发表论文

	Risk assessment of nitrogen discharge from a coastal watershed
	Chen, N. W. ; Hong, H. S. ; Zhang, L. P. ; Cao, W. Z. ; Hong HS(洪华生)
刊名	http://dx.doi.org/10.1016/S1002-0160(07)60056-3
	2007-08
关键词	NUTRIENT EXPORT RISK NUCLEAR-POWER-PLANTS AGRICULTURAL POLLUTION CATCHMENT
英文摘要	Probabilistic risk assessment (PRA) uses probability theory to quantify the probability of occurrence of an event. In this study, PRA was conducted for the discharge of excess nitrogen (N) from an agricultural (Jiulong River) watershed in Southeast China. Using fault tree analysis, a type of PRA, the probability of occurrence of excess N discharge into the river during a runoff event was evaluated both qualitatively and quantitatively. Land use maps, soil maps, fertilizer use records, and expert opinions were used to determine probabilities of individual events within the fault tree and to calculate the overall probability of excess N discharge during a runoff event. Qualitative analysis showed that the risk of excess N discharge was mainly related to crop and livestock practices in the watershed. Proper management of tillage, fertilizer, and manure was necessary to control N releases. Quantitative assessment results indicated that alternative practices including reduction of fertilization, installation of vegetative strip buffer around the pig farms, and installation of more riparian buffers along the Jiulong River could reduce the likelihood of N discharge through runoff.
语种	英语
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/60441]
专题	海洋环境－已发表论文
推荐引用方式 GB/T 7714	Chen, N. W.,Hong, H. S.,Zhang, L. P.,et al. Risk assessment of nitrogen discharge from a coastal watershed[J]. http://dx.doi.org/10.1016/S1002-0160(07)60056-3,2007.
APA	Chen, N. W.,Hong, H. S.,Zhang, L. P.,Cao, W. Z.,&洪华生.(2007).Risk assessment of nitrogen discharge from a coastal watershed.http://dx.doi.org/10.1016/S1002-0160(07)60056-3.
MLA	Chen, N. W.,et al."Risk assessment of nitrogen discharge from a coastal watershed".http://dx.doi.org/10.1016/S1002-0160(07)60056-3 (2007).