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Mutual inhibition effects of elevated CO 2 and climate change on global forest GPP.
- Source :
-
Environmental research [Environ Res] 2024 Jul 01; Vol. 252 (Pt 4), pp. 119145. Date of Electronic Publication: 2024 May 14. - Publication Year :
- 2024
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Abstract
- The impact of CO <subscript>2</subscript> fertilization on enhancing global forest gross primary productivity (GPP) is acknowledged, but its interaction with climate factors-air temperature (Tem), precipitation (Pre), vapor pressure deficit (VPD), and radiation (Rad)-remains unclear. In this study, global forest GPP trends from 1982 to 2018 were examined using BEPS, NIRv, FLUXCOM, and revised EC-LUE datasets, with interannual trends of 5.618 (p < 0.01), 5.831 (p < 0.01), 0.227, and 6.566 g C m <superscript>-2</superscript> yr <superscript>-1</superscript> (p < 0.01), respectively. Elevated CO <subscript>2</subscript> was identified as the primary driver of GPP trends, with the dominant area ranging from 51.11% to 90.37% across different GPP datasets. In the NIRv and revised EC-LUE datasets, the positive impact of CO <subscript>2</subscript> on GPP showed a decrease of 0.222 g C m <superscript>-2</superscript> yr <superscript>-1</superscript> , while the negative impact of Rad increased by 0.007 g C m <superscript>-2</superscript> yr <superscript>-1</superscript> . An inhibitory relationship was found between the actual effects of elevated CO <subscript>2</subscript> and climate change on GPP in most forest types. At lower latitudes, Tem primarily constrained CO <subscript>2</subscript> fertilization, while at higher latitudes, VPD emerged as the key limiting factor. This was mainly attributed to the potential trade-off or competition between elevated CO <subscript>2</subscript> and climate change in influencing GPP, with strategic resource allocation varying across different forest ecosystems. This study highlights the significant inhibitory effects of elevated CO <subscript>2</subscript> and climate change on global forest GPP, providing insights into the dynamic responses of forest ecosystems to changing environments.<br />Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.<br /> (Copyright © 2024 Elsevier Inc. All rights reserved.)
- Subjects :
- Trees
Climate Change
Carbon Dioxide analysis
Forests
Subjects
Details
- Language :
- English
- ISSN :
- 1096-0953
- Volume :
- 252
- Issue :
- Pt 4
- Database :
- MEDLINE
- Journal :
- Environmental research
- Publication Type :
- Academic Journal
- Accession number :
- 38754610
- Full Text :
- https://doi.org/10.1016/j.envres.2024.119145