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dc.contributor.authorChen, N. W.zh_CN
dc.contributor.authorHong, H. S.zh_CN
dc.contributor.authorZhang, L. P.zh_CN
dc.contributor.authorCao, W. Z.zh_CN
dc.contributor.author洪华生zh_CN
dc.date.accessioned2013-12-12T02:08:23Z
dc.date.available2013-12-12T02:08:23Z
dc.date.issued2007-08zh_CN
dc.identifier.citationPedosphere, 2007,17(4):467-474zh_CN
dc.identifier.issn1002-0160zh_CN
dc.identifier.otherISI:000248468900007zh_CN
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/60441
dc.description.abstractProbabilistic 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.zh_CN
dc.language.isoen_USzh_CN
dc.source.urihttp://dx.doi.org/10.1016/S1002-0160(07)60056-3zh_CN
dc.subjectNUTRIENT EXPORT RISKzh_CN
dc.subjectNUCLEAR-POWER-PLANTSzh_CN
dc.subjectAGRICULTURAL POLLUTIONzh_CN
dc.subjectCATCHMENTzh_CN
dc.titleRisk assessment of nitrogen discharge from a coastal watershedzh_CN
dc.typeArticlezh_CN


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