globalchange  > 气候减缓与适应
DOI: 10.1007/s10533-018-0440-3
Scopus记录号: 2-s2.0-85045728195
论文题名:
A net ecosystem carbon budget for snow dominated forested headwater catchments: linking water and carbon fluxes to critical zone carbon storage
作者: Perdrial J.; Brooks P.D.; Swetnam T.; Lohse K.A.; Rasmussen C.; Litvak M.; Harpold A.A.; Zapata-Rios X.; Broxton P.; Mitra B.; Meixner T.; Condon K.; Huckle D.; Stielstra C.; Vázquez-Ortega A.; Lybrand R.; Holleran M.; Orem C.; Pelletier J.; Chorover J.
刊名: Biogeochemistry
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2018
起始页码: 1
结束页码: 19
语种: 英语
英文关键词: Biomass ; Carbon budget ; Critical zone ; Forested ; Lateral carbon transfer ; Soil ; Water limitation
英文摘要: Climate-driven changes in carbon (C) cycling of forested ecosystems have the potential to alter long-term C sequestration and the global C balance. Prior studies have shown that C uptake and partitioning in response to hydrologic variation are system specific, suggesting that a comprehensive assessment is required for distinct ecosystems. Many sub-humid montane forest ecosystems in the US are projected to experience increased water limitation over the next decades and existing water-limited forests can be used as a model for how changes in the hydrologic cycle will impact such ecosystems more broadly. Toward that goal we monitored precipitation, net ecosystem exchange and lateral soil and stream C fluxes in three semi-arid to sub-humid montane forest catchments for several years (WY 2009–2013) to investigate how the amount and timing of water delivery affect C stores and fluxes. The key control on aqueous and gaseous C fluxes was the distribution of water between winter and summer precipitation, affecting ecosystem C uptake versus heterotrophic respiration. We furthermore assessed C stores in soil and above- and below-ground biomass to assess how spatial patterns in water availability influence C stores. Topographically-driven patterns in catchment wetness correlated with modeled soil C stores, reflecting both long-term trends in local C uptake as well as lateral redistribution of C leached from upslope organic soil horizons to convergent landscape positions. The results suggest that changes in the seasonality of precipitation from winter snow to summer rain will influence both the amount and the spatial distribution of soil C stores. © 2018 Springer International Publishing AG, part of Springer Nature
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83162
Appears in Collections:气候减缓与适应
气候变化事实与影响

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作者单位: Department of Geology, University of Vermont, Burlington, VT, United States; Department of Soil, Water and Environmental Science, University of Arizona, Tucson, AZ, United States; Department of Hydrology and Atmospheric Sciences, University of Arizona, Tucson, AZ, United States; School of Natural Resources and Environment, University of Arizona, Tucson, AZ, United States; Department of Biological Sciences, Idaho State University, Pocatello, ID, United States; Department of Biological Sciences, University of New Mexico, Albuquerque, NM, United States; Department of Geosciences, University of Arizona, Tucson, AZ, United States; Department of Geology and Geophysics, University of Utah, Salt Lake City, UT, United States; Department of Natural Resources and Environmental Science, University of Nevada, Reno, NV, United States; Department of Crop and Soil Science, Oregon State University, Corvallis, OR, United States; School of Earth, Environment and Society, Bowling Green State University, Bowling Green, OH, United States

Recommended Citation:
Perdrial J.,Brooks P.D.,Swetnam T.,et al. A net ecosystem carbon budget for snow dominated forested headwater catchments: linking water and carbon fluxes to critical zone carbon storage[J]. Biogeochemistry,2018-01-01
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