期刊
NATURE CLIMATE CHANGE
卷 10, 期 6, 页码 555-+出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/s41558-020-0763-7
关键词
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资金
- Global Water Futures programme of the Canada First Research Excellence Fund
- ICOS-FINLAND [281255]
- Finnish Center of Excellence [307331]
- EU Horizon 2020 RINGO project [730944]
- RFBR [18-05-60203-Arktika, 19-04-01234-a]
- Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science [18-05-60203-Arktika]
- US National Science foundation [DEB-1440297]
- DOE Ameriflux Network Management Project
- Fluxnet Canada ResearchNetwork (2002-2007
- NSERC)
- Fluxnet Canada ResearchNetwork (2002-2007
- CFCAS)
- Fluxnet Canada ResearchNetwork (2002-2007
- BIOCAP)
- Canadian Carbon Program (2008-2012
- CFCAS)
- NSERC (Climate Change and Atmospheric Research)
- Arctic Challenge for Sustainability (ArCS) project
- NASA Canada
- NSERC Canada
- BIOCAP Canada
- Canadian Foundation for Climate and Atmospheric Sciences
- Canadian Foundation for Innovation
- Canadian Forest Service
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- FLUXNET-Canada Network (NSERC)
- FLUXNET-Canada Network (Canadian Foundation for Climate and Atmospheric Sciences (CFCAS))
- FLUXNET-Canada Network (BIOCAP Canada)
- Canadian Carbon Program (CFCAS)
- Parks Canada
- Program of Energy Research and Development (PERD)
- Action Plan 2000
- Swedish research infrastructure SITES Sweden
- Swedish research infrastructure ICOS Sweden
- Kempe Foundations [SMK-1743]
- VR [2018-03966]
- Formas [2016-01289]
- Knut and Alice Wallenberg Foundation [2015.0047]
- German Research Foundation [Wi 2680/2-1]
- European Union [36993]
- Cluster of Excellence `CliSAP' of the University of Hamburg - German Research Foundation [EXC177]
- Canada Research Chairs
- Canada Foundation for Innovation Leaders Opportunity Fund
- Natural Sciences and Engineering Research Council Discovery Grant Programs
- Vinnova [2018-03966] Funding Source: Vinnova
- Swedish Research Council [2018-03966] Funding Source: Swedish Research Council
- Formas [2016-01289] Funding Source: Formas
Climate warming increases evapotranspiration (ET) more in boreal peatlands than in forests. Observations show that peatland ET can exceed forest ET by up to 30%, indicating a stronger warming response in peatlands. Earth system models do not fully account for peatlands and hence may underestimate future boreal ET. The response of evapotranspiration (ET) to warming is of critical importance to the water and carbon cycle of the boreal biome, a mosaic of land cover types dominated by forests and peatlands. The effect of warming-induced vapour pressure deficit (VPD) increases on boreal ET remains poorly understood because peatlands are not specifically represented as plant functional types in Earth system models. Here we show that peatland ET increases more than forest ET with increasing VPD using observations from 95 eddy covariance tower sites. At high VPD of more than 2 kPa, peatland ET exceeds forest ET by up to 30%. Future (2091-2100) mid-growing season peatland ET is estimated to exceed forest ET by over 20% in about one-third of the boreal biome for RCP4.5 and about two-thirds for RCP8.5. Peatland-specific ET responses to VPD should therefore be included in Earth system models to avoid biases in water and carbon cycle projections.
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