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dc.contributor.author박지형*
dc.date.accessioned2016-08-28T10:08:56Z-
dc.date.available2016-08-28T10:08:56Z-
dc.date.issued2012*
dc.identifier.issn0167-8809*
dc.identifier.otherOAK-9347*
dc.identifier.urihttps://dspace.ewha.ac.kr/handle/2015.oak/223120-
dc.description.abstractThe purpose of this study was to develop options for a more sustainable catchment management, resulting in a reduction of agricultural non-point pollution of water resources in South Korean agricultural catchments. Therefore, an N budget analysis was conducted, which related N inputs into soil under intensive agriculture to N outputs at both field and catchment scale in a mountainous catchment in South Korea. The N budget of all investigated crops was positive, with total N inputs exceeding N outputs by 2.8 times. Radish showed the highest N uptake efficiency (43-45%), whereas rice showed the lowest with 24-30%. At the catchment scale, agriculture contributed over 90% to the maximum N surplus (473. Mg). Rice and radish, with over 100. Mg. N surplus each, contributed the largest part. Comparing these results to the N export in the catchment outlet, it was found that N leaching and surface runoff were the dominant loss pathways, leading to a seasonal inorganic N export of 329. Mg. Because fertilizer N was the major N input (>50%) for all crop types except soybean, its reduction was identified as the major scope of action for N savings at the field and catchment scale. The currently observed trend of land use change from annual to perennial crops additionally assists the reduction of N surplus but shows only a spatially limited applicability for the future. Further measures like split applications, application timing to match crop needs and cover crops during the fallow complement the attempt. © 2012 Elsevier B.V.*
dc.languageEnglish*
dc.titleN fluxes in an agricultural catchment under monsoon climate: A budget approach at different scales*
dc.typeArticle*
dc.relation.volume161*
dc.relation.indexSCI*
dc.relation.indexSCIE*
dc.relation.indexSCOPUS*
dc.relation.startpage101*
dc.relation.lastpage111*
dc.relation.journaltitleAgriculture, Ecosystems and Environment*
dc.identifier.doi10.1016/j.agee.2012.07.027*
dc.identifier.wosidWOS:000310385400012*
dc.identifier.scopusid2-s2.0-84866557524*
dc.author.googleKettering J.*
dc.author.googlePark J.H.*
dc.author.googleLindner S.*
dc.author.googleLee B.*
dc.author.googleTenhunen J.*
dc.author.googleKuzyakov Y.*
dc.contributor.scopusid박지형(8540341100)*
dc.date.modifydate20240322131715*
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공과대학 > 환경공학과 > Journal papers
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