Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 박지형 | * |
dc.date.accessioned | 2016-08-28T10:08:56Z | - |
dc.date.available | 2016-08-28T10:08:56Z | - |
dc.date.issued | 2012 | * |
dc.identifier.issn | 0167-8809 | * |
dc.identifier.other | OAK-9347 | * |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/223120 | - |
dc.description.abstract | The 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.language | English | * |
dc.title | N fluxes in an agricultural catchment under monsoon climate: A budget approach at different scales | * |
dc.type | Article | * |
dc.relation.volume | 161 | * |
dc.relation.index | SCI | * |
dc.relation.index | SCIE | * |
dc.relation.index | SCOPUS | * |
dc.relation.startpage | 101 | * |
dc.relation.lastpage | 111 | * |
dc.relation.journaltitle | Agriculture, Ecosystems and Environment | * |
dc.identifier.doi | 10.1016/j.agee.2012.07.027 | * |
dc.identifier.wosid | WOS:000310385400012 | * |
dc.identifier.scopusid | 2-s2.0-84866557524 | * |
dc.author.google | Kettering J. | * |
dc.author.google | Park J.H. | * |
dc.author.google | Lindner S. | * |
dc.author.google | Lee B. | * |
dc.author.google | Tenhunen J. | * |
dc.author.google | Kuzyakov Y. | * |
dc.contributor.scopusid | 박지형(8540341100) | * |
dc.date.modifydate | 20240322131715 | * |