DOI: 10.1002/grl.50306
论文题名: Extreme storms and changes in particulate and dissolved organic carbon in runoff: Entering uncharted waters?
作者: Dhillon G.S. ; Inamdar S.
刊名: Geophysical Research Letters
ISSN: 0094-9201
EISSN: 1944-8932
出版年: 2013
卷: 40, 期: 7 起始页码: 1322
结束页码: 1327
语种: 英语
英文关键词: catchment runoff
; dissolved organic carbon
; particulate organic carbon
; storm events
Scopus关键词: Catchment runoffs
; Dissolved organic carbon
; Ecosystem health
; Extreme storm events
; Forested catchments
; Particulate organic carbon
; Precipitation threshold
; Storm events
; Aquatic ecosystems
; Catchments
; Ecology
; Hurricanes
; International trade
; Lasers
; Runoff
; Stream flow
; Water quality
; Storms
; carbon cycle
; climate change
; dissolved organic carbon
; ecosystem health
; extreme event
; forested catchment
; hurricane
; particulate organic carbon
; runoff
; water quality
英文摘要: We determined the runoff exports of particulate (POC) and dissolved organic carbon (DOC) from a 12 ha forested catchment which received more than 14 storm events in a 16-month period and three extreme events associated with hurricanes. While POC and DOC exports for the small events were comparable, POC exports for the hurricane-associated events were six to eight times the DOC values. Hurricane Irene alone contributed to 56% (21.2 kg C ha-1) and 19% (3.3 kg C ha-1) of the 2011 exports of POC and DOC, respectively. A precipitation threshold beyond which POC fluxes rapidly outpaced the DOC values was also identified. Our study suggests that large, high-intensity storm events that are predicted to increase under future climate-change scenarios will dramatically alter the runoff C regime by enhancing the POC inputs to aquatic ecosystems. Such shift in C forms could have important consequences for aquatic biota, atmospheric C cycling, and ecosystem and human health. Key Points POC mass exports during extreme storm events are much greater than DOC POC exports increase dramatically beyond a specific precipitation threshold Shift in C forms will impact water quality, C cycling and ecosystem health ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84876901109&doi=10.1002%2fgrl.50306&partnerID=40&md5=e78b096eaae4bc282bb287839e3030d9
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6465
Appears in Collections: 气候减缓与适应
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作者单位: Plant and Soil Sciences Department, University of Delaware, 152 Townsend Hall, 531 S. College Avenue, Newark, DE 19716, United States
Recommended Citation:
Dhillon G.S.,Inamdar S.. Extreme storms and changes in particulate and dissolved organic carbon in runoff: Entering uncharted waters?[J]. Geophysical Research Letters,2013-01-01,40(7).