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Peatland Heterogene...
Peatland Heterogeneity Impacts on Regional Carbon Flux and Its Radiative Effect Within a Boreal Landscape
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- Kou, Dan (författare)
- University of Eastern Finland,Purdue University
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- Virtanen, Tarmo (författare)
- University of Helsinki
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- Treat, Claire C. (författare)
- Alfred-Wegener Institute, Helmholtz Center for Polar and Marine Research, Bremerhaven
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- Tuovinen, Juha Pekka (författare)
- Finnish Meteorological Institute
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- Räsänen, Aleksi (författare)
- Natural Resources Institute Finland (Luke),University of Helsinki
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- Juutinen, Sari (författare)
- University of Helsinki
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- Mikola, Juha (författare)
- University of Helsinki,Natural Resources Institute Finland (Luke)
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- Aurela, Mika (författare)
- Finnish Meteorological Institute
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- Heiskanen, Lauri (författare)
- Finnish Meteorological Institute
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- Heikkilä, Maija (författare)
- University of Helsinki
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- Weckström, Jan (författare)
- University of Helsinki
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- Juselius, Teemu (författare)
- University of Helsinki
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- Piilo, Sanna R. (författare)
- University of Helsinki
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- Deng, Jia (författare)
- University of New Hampshire, Durham
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- Zhang, Yu (författare)
- Canada Centre for Mapping and Earth Observation (CCMEO)
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- Chaudhary, Nitin (författare)
- Lund University,Lunds universitet,BECC: Biodiversity and Ecosystem services in a Changing Climate,Centrum för miljö- och klimatvetenskap (CEC),Naturvetenskapliga fakulteten,MERGE: ModElling the Regional and Global Earth system,Institutionen för naturgeografi och ekosystemvetenskap,Centre for Environmental and Climate Science (CEC),Faculty of Science,Dept of Physical Geography and Ecosystem Science,University of Oslo
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- Huang, Conghong (författare)
- The State University of New York
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- Väliranta, Minna (författare)
- University of Helsinki
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- Biasi, Christina (författare)
- University of Eastern Finland
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- Liu, Xiangyu (författare)
- Purdue University
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- Guo, Mingyang (författare)
- Purdue University
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- Zhuang, Qianlai (författare)
- Purdue University
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- Korhola, Atte (författare)
- University of Helsinki
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- Shurpali, Narasinha J. (författare)
- Natural Resources Institute Finland (Luke)
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(creator_code:org_t)
- 2022
- 2022
- Engelska.
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Ingår i: Journal of Geophysical Research: Biogeosciences. - 2169-8953. ; 127:9
- Relaterad länk:
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http://dx.doi.org/10... (free)
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Peatlands, with high spatial variability in ecotypes and microforms, constitute a significant part of the boreal landscape and play an important role in the global carbon (C) cycle. However, the effects of this peatland heterogeneity within the boreal landscape are rarely quantified. Here, we use field-based measurements, high-resolution land cover classification, and biogeochemical and atmospheric models to estimate the atmosphere-ecosystem C fluxes and the corresponding radiative effect (RE) for a boreal landscape (Kaamanen) in northern Finland. Our result shows that the Kaamanen catchment currently functioned as a sink of carbon dioxide (CO2) and a source of methane (CH4). Peatlands (26% of the area) contributed 22% of the total CO2 uptake and 89% of CH4 emissions; forests (61%) accounted for 78% of CO2 uptake and offset 6% of CH4 emissions; water bodies (13%) offset 7% of CO2 uptake and contributed 11% of CH4 emissions. The heterogeneity of peatlands accounted for 11%, 88%, and 75% of the area-weighted variability (deviation from the area-weighted mean among different land cover types (LCTs) within the catchment) in CO2 flux, CH4 flux, and the combined RE of CO2 and CH4 exchanges over the 25-year time horizon, respectively. Aggregating peatland LCTs or misclassifying them as nonpeatland LCTs can significantly (p < 0.05) bias the regional CH4 exchange and RE estimates, while differentiating between drier noninundated and wetter inundated peatlands can effectively reduce the bias. Current land cover products lack such details in peatland heterogeneity, which would be needed to better constrain boreal C budgets and global C-climate feedbacks.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Naturgeografi (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Physical Geography (hsv//eng)
Nyckelord
- boreal
- carbon
- heterogeneity
- landscape
- peatland
- radiative effect
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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Till lärosätets databas
- Av författaren/redakt...
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Kou, Dan
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Virtanen, Tarmo
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Treat, Claire C.
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Tuovinen, Juha P ...
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Räsänen, Aleksi
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Juutinen, Sari
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visa fler...
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Mikola, Juha
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Aurela, Mika
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Heiskanen, Lauri
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Heikkilä, Maija
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Weckström, Jan
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Juselius, Teemu
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Piilo, Sanna R.
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Deng, Jia
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Zhang, Yu
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Chaudhary, Nitin
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Huang, Conghong
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Väliranta, Minna
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Biasi, Christina
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Liu, Xiangyu
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Guo, Mingyang
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Zhuang, Qianlai
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Korhola, Atte
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Shurpali, Narasi ...
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