| DOI: | 10.1002/2014GL062762
|
| 论文题名: | Labile pyrogenic dissolved organic carbon in major Siberian Arctic rivers: Implications for wildfire-stream metabolic linkages |
| 作者: | Myers-Pigg A.N.; Louchouarn P.; Amon R.M.W.; Prokushkin A.; Pierce K.; Rubtsov A.
|
| 刊名: | Geophysical Research Letters
|
| ISSN: | 0094-9058
|
| EISSN: | 1944-8789
|
| 出版年: | 2015
|
| 卷: | 42, 期:2 | | 起始页码: | 377
|
| 结束页码: | 385
|
| 语种: | 英语
|
| 英文关键词: | Arctic rivers
; carbon cycling
; DOC
; pyrogenic carbon
|
| Scopus关键词: | Carbon
; Combustion
; Degradation
; Fires
; Organic carbon
; Stream flow
; Temperature
; Watersheds
; Arctic rivers
; Carbon cycling
; Dissolved organic carbon
; DOC
; First-order degradation rates
; High-temperature combustion
; Hydrologic events
; Low temperatures
; Rivers
; anthropogenic effect
; biomarker
; biomass burning
; combustion
; concentration (composition)
; dissolved organic carbon
; metabolism
; water quality
; watershed
; wildfire
; Siberia
; Gymnospermae
|
| 英文摘要: | Biomass burning produces a spectrum of thermally altered materials that releases pyrogenic carbon (PyC) to terrestrial, atmospheric, and aquatic systems. Most studies focus on the refractory end of the PyC spectrum, derived from middle- to high-temperature combustion. Low-temperature PyC is produced during wildfires and has been found to be particularly labile and water soluble. Here we find that in each of the major Siberian watersheds, low-temperature fire-derived biomarkers are present in detectable concentrations during all flow regimes of the 2004-2006 sampling period, confirming that PyC is an intrinsic component of the dissolved organic carbon (DOC) pool mobilized by hydrologic events. Gymnosperm combustion, from the southern portions of these watersheds, is the primary source of this Py-DOC input. Using first-order degradation rates and transit times of water through these rivers, about half of the total estimated flux of this material may be remineralized during transport from fire source to river mouth (20-40-days), demonstrating the input of a labile source of PyC to these watersheds. © 2015. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84923544835&doi=10.1002%2f2014GL062762&partnerID=40&md5=3577e7b394192fa66ead0555b8715bb6
|
| Citation statistics: |
|
| 资源类型: | 期刊论文
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/8674
|
| Appears in Collections: | 科学计划与规划
气候变化与战略
|
|
There are no files associated with this item.
|
|
作者单位: | Department of Oceanography, Texas A and M University, College Station, TX, United States
|
| Recommended Citation: | |
Myers-Pigg A.N.,Louchouarn P.,Amon R.M.W.,et al. Labile pyrogenic dissolved organic carbon in major Siberian Arctic rivers: Implications for wildfire-stream metabolic linkages[J]. Geophysical Research Letters,2015-01-01,42(2).
|
|
|