Evolution of Global Terrestrial Gross Primary Productivity Trend
(2024) In Ecosystem Health and Sustainability 10.- Abstract
Increased global vegetation gross primary productivity (GPP) over the past decades has led to an enhanced terrestrial carbon sink, an important factor in mitigating global warming. However, the global spatiotemporal evolution of GPP trends is still under debate, largely limiting our understanding of the sustainability in terrestrial carbon sink. Here in this study, based on a dozen of long-term global GPP datasets, we found that global GPP trends fell significantly from 0.43 PgC year−2 in 1982–1999 to 0.17 PgC year−2 in 2000–2016, a signal detected across >68% of the terrestrial surface. The decrease in GPP trends was more pronounced from satellite-based GPP datasets than from process-based models, which may... (More)
Increased global vegetation gross primary productivity (GPP) over the past decades has led to an enhanced terrestrial carbon sink, an important factor in mitigating global warming. However, the global spatiotemporal evolution of GPP trends is still under debate, largely limiting our understanding of the sustainability in terrestrial carbon sink. Here in this study, based on a dozen of long-term global GPP datasets, we found that global GPP trends fell significantly from 0.43 PgC year−2 in 1982–1999 to 0.17 PgC year−2 in 2000–2016, a signal detected across >68% of the terrestrial surface. The decrease in GPP trends was more pronounced from satellite-based GPP datasets than from process-based models, which may result from a decline in the CO2 fertilization effect. This finding therefore indicates that the terrestrial carbon sink may become saturated in the future, and highlights the urgent need of stricter strategies for reducing carbon emissions to mitigate global warming.
(Less)
- author
- Wang, Zihao ; Peñuelas, Josep ; Tagesson, Torbern LU ; Smith, W. K. ; Wu, Mousong LU ; He, Wei ; Sitch, Stephen and Wang, Songhan
- organization
- publishing date
- 2024
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Ecosystem Health and Sustainability
- volume
- 10
- article number
- 0278
- publisher
- American Association for the Advancement of Science (AAAS)
- external identifiers
-
- scopus:85214498631
- ISSN
- 2096-4129
- DOI
- 10.34133/ehs.0278
- language
- English
- LU publication?
- yes
- id
- 958bf816-f402-42f5-b30d-393d8a3ab02a
- date added to LUP
- 2025-02-26 11:39:37
- date last changed
- 2025-04-04 15:31:18
@article{958bf816-f402-42f5-b30d-393d8a3ab02a, abstract = {{<p>Increased global vegetation gross primary productivity (GPP) over the past decades has led to an enhanced terrestrial carbon sink, an important factor in mitigating global warming. However, the global spatiotemporal evolution of GPP trends is still under debate, largely limiting our understanding of the sustainability in terrestrial carbon sink. Here in this study, based on a dozen of long-term global GPP datasets, we found that global GPP trends fell significantly from 0.43 PgC year<sup>−2</sup> in 1982–1999 to 0.17 PgC year<sup>−2</sup> in 2000–2016, a signal detected across >68% of the terrestrial surface. The decrease in GPP trends was more pronounced from satellite-based GPP datasets than from process-based models, which may result from a decline in the CO<sub>2</sub> fertilization effect. This finding therefore indicates that the terrestrial carbon sink may become saturated in the future, and highlights the urgent need of stricter strategies for reducing carbon emissions to mitigate global warming.</p>}}, author = {{Wang, Zihao and Peñuelas, Josep and Tagesson, Torbern and Smith, W. K. and Wu, Mousong and He, Wei and Sitch, Stephen and Wang, Songhan}}, issn = {{2096-4129}}, language = {{eng}}, publisher = {{American Association for the Advancement of Science (AAAS)}}, series = {{Ecosystem Health and Sustainability}}, title = {{Evolution of Global Terrestrial Gross Primary Productivity Trend}}, url = {{http://dx.doi.org/10.34133/ehs.0278}}, doi = {{10.34133/ehs.0278}}, volume = {{10}}, year = {{2024}}, }