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Uncovering the crit...
Uncovering the critical soil moisture thresholds of plant water stress for European ecosystems
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- Fu, Zheng (author)
- Versailles Saint-Quentin-en-Yvelines University
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- Ciais, Philippe (author)
- Versailles Saint-Quentin-en-Yvelines University
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- Makowski, David (author)
- University of Paris-Saclay
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- Bastos, Ana (author)
- Max Planck Institute for Biogeochemistry
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- Stoy, Paul C. (author)
- University of Wisconsin-Madison
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- Ibrom, Andreas (author)
- Technical University of Denmark
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- Knohl, Alexander (author)
- University of Göttingen
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- Migliavacca, Mirco (author)
- Max Planck Institute for Biogeochemistry
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- Cuntz, Matthias (author)
- University of Lorraine
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- Šigut, Ladislav (author)
- Academy of Sciences of the Czech Republic
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- Peichl, Matthias (author)
- Sveriges lantbruksuniversitet,Swedish University of Agricultural Sciences,Institutionen för skogens ekologi och skötsel,Department of Forest Ecology and Management
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- Loustau, Denis (author)
- Interaction Sol Plante Atmosphère (ISPA)
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- El-Madany, Tarek S. (author)
- Max Planck Institute for Biogeochemistry
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- Buchmann, Nina (author)
- Lund University,Lunds universitet,Centrum för miljö- och klimatvetenskap (CEC),Naturvetenskapliga fakulteten,Centre for Environmental and Climate Science (CEC),Faculty of Science,ETH Zürich
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- Gharun, Mana (author)
- ETH Zürich
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- Janssens, Ivan (author)
- University of Antwerp
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- Markwitz, Christian (author)
- University of Göttingen
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- Grünwald, Thomas (author)
- Dresden University of Technology
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- Rebmann, Corinna (author)
- Helmholtz Centre for Environmental Research (UFZ)
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- Mölder, Meelis (author)
- Lund University,Lunds universitet,ICOS Sweden,Centrum för miljö- och klimatvetenskap (CEC),Naturvetenskapliga fakulteten,Institutionen för naturgeografi och ekosystemvetenskap,Centre for Environmental and Climate Science (CEC),Faculty of Science,Dept of Physical Geography and Ecosystem Science
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- Varlagin, Andrej (author)
- Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences
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- Mammarella, Ivan (author)
- University of Helsinki
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- Kolari, Pasi (author)
- University of Helsinki
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- Bernhofer, Christian (author)
- Dresden University of Technology
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- Heliasz, Michal (author)
- Lund University,Lunds universitet,ICOS Sweden,Centrum för miljö- och klimatvetenskap (CEC),Naturvetenskapliga fakulteten,Institutionen för naturgeografi och ekosystemvetenskap,Centre for Environmental and Climate Science (CEC),Faculty of Science,Dept of Physical Geography and Ecosystem Science
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- Vincke, Caroline (author)
- Catholic University of Louvain
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- Pitacco, Andrea (author)
- University of Padova
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- Cremonese, Edoardo (author)
- Environmental Protection Agency of Aosta Valley
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- Foltýnová, Lenka (author)
- Academy of Sciences of the Czech Republic
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- Wigneron, Jean Pierre (author)
- Interaction Sol Plante Atmosphère (ISPA)
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(creator_code:org_t)
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- 2021-12-30
- 2022
- English.
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In: Global Change Biology. - : Wiley. - 1354-1013 .- 1365-2486. ; 28:6, s. 2111-2123
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Abstract
Subject headings
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- Understanding the critical soil moisture (SM) threshold (θcrit) of plant water stress and land surface energy partitioning is a basis to evaluate drought impacts and improve models for predicting future ecosystem condition and climate. Quantifying the θcrit across biomes and climates is challenging because observations of surface energy fluxes and SM remain sparse. Here, we used the latest database of eddy covariance measurements to estimate θcrit across Europe by evaluating evaporative fraction (EF)-SM relationships and investigating the covariance between vapor pressure deficit (VPD) and gross primary production (GPP) during SM dry-down periods. We found that the θcrit and soil matric potential threshold in Europe are 16.5% and −0.7 MPa, respectively. Surface energy partitioning characteristics varied among different vegetation types; EF in savannas had the highest sensitivities to SM in water-limited stage, and the lowest in forests. The sign of the covariance between daily VPD and GPP consistently changed from positive to negative during dry-down across all sites when EF shifted from relatively high to low values. This sign of the covariance changed after longer period of SM decline in forests than in grasslands and savannas. Estimated θcrit from the VPD–GPP covariance method match well with the EF–SM method, showing this covariance method can be used to detect the θcrit. We further found that soil texture dominates the spatial variability of θcrit while shortwave radiation and VPD are the major drivers in determining the spatial pattern of EF sensitivities. Our results highlight for the first time that the sign change of the covariance between daily VPD and GPP can be used as an indicator of how ecosystems transition from energy to SM limitation. We also characterized the corresponding θcrit and its drivers across diverse ecosystems in Europe, an essential variable to improve the representation of water stress in land surface models.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Klimatforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Climate Research (hsv//eng)
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
- LANTBRUKSVETENSKAPER -- Lantbruksvetenskap, skogsbruk och fiske -- Markvetenskap (hsv//swe)
- AGRICULTURAL SCIENCES -- Agriculture, Forestry and Fisheries -- Soil Science (hsv//eng)
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Fu, Zheng
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Ciais, Philippe
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Makowski, David
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Bastos, Ana
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Stoy, Paul C.
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Ibrom, Andreas
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show more...
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Knohl, Alexander
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Migliavacca, Mir ...
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Cuntz, Matthias
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Šigut, Ladislav
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Peichl, Matthias
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Loustau, Denis
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El-Madany, Tarek ...
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Buchmann, Nina
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Gharun, Mana
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Janssens, Ivan
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Markwitz, Christ ...
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Grünwald, Thomas
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Rebmann, Corinna
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Mölder, Meelis
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Varlagin, Andrej
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Mammarella, Ivan
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Kolari, Pasi
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Bernhofer, Chris ...
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Heliasz, Michal
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Vincke, Caroline
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Pitacco, Andrea
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Cremonese, Edoar ...
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Foltýnová, Lenka
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Wigneron, Jean P ...
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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and Climate Research
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
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and Ecology
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- AGRICULTURAL SCIENCES
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AGRICULTURAL SCI ...
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and Agriculture Fore ...
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and Soil Science
- Articles in the publication
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Global Change Bi ...
- By the university
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Lund University
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Swedish University of Agricultural Sciences