DOI: 10.1002/2015GL064647
论文题名: Removal of terrestrial DOC in aquatic ecosystems of a temperate river network
作者: Wollheim W.M. ; Stewart R.J. ; Aiken G.R. ; Butler K.D. ; Morse N.B. ; Salisbury J.
刊名: Geophysical Research Letters
ISSN: 0094-9386
EISSN: 1944-9117
出版年: 2015
卷: 42, 期: 16 起始页码: 6671
结束页码: 6679
语种: 英语
英文关键词: dissolved organic carbon
; net removal
; river networks
Scopus关键词: Coastal zones
; Organic carbon
; Rivers
; Stream flow
; Water analysis
; Acid fractions
; Aquatic system
; Carbon balance
; Dissolved organic carbon
; Distributed samplings
; Reactive nitrogen
; River network
; Transphilic acid
; Aquatic ecosystems
; aquatic ecosystem
; carbon balance
; chloride
; coastal zone
; dissolved organic carbon
; global change
; hydrophobicity
; nitrogen
; pollutant removal
; river system
; sampling
; surface water
英文摘要: Surface waters play a potentially important role in the global carbon balance. Dissolved organic carbon (DOC) fluxes are a major transfer of terrestrial carbon to river systems, and the fate of DOC in aquatic systems is poorly constrained. We used a unique combination of spatially distributed sampling of three DOC fractions throughout a river network and modeling to quantify the net removal of terrestrial DOC during a summer base flow period. We found that aquatic reactivity of terrestrial DOC leading to net loss is low, closer to conservative chloride than to reactive nitrogen. Net removal occurred mainly from the hydrophobic organic acid fraction, while hydrophilic and transphilic acids showed no net change, indicating that partitioning of bulk DOC into different fractions is critical for understanding terrestrial DOC removal. These findings suggest that river systems may have only a modest ability to alter the amounts of terrestrial DOC delivered to coastal zones. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84941748458&doi=10.1002%2f2015GL064647&partnerID=40&md5=5b070d5ca73ff9753a192ab54f4b48be
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9001
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Department of Natural Resources and Environment, University of New Hampshire, Durham, NH, United States
Recommended Citation:
Wollheim W.M.,Stewart R.J.,Aiken G.R.,et al. Removal of terrestrial DOC in aquatic ecosystems of a temperate river network[J]. Geophysical Research Letters,2015-01-01,42(16).