| Autor: |
Naixin Fan, Maurizio Santoro, Simon Besnard, Oliver Cartus, Sujan Koirala, Nuno Carvalhais |
| Rok vydání: |
2022 |
| DOI: |
10.22541/essoar.167169680.08024236/v1 |
| Popis: |
Vegetation turnover time (τ) is a central ecosystem property to quantify the global vegetation carbon dynamics. However, our understanding of vegetation dynamics is hampered by the lack of long-term observations of the changes in vegetation biomass. Here we challenge the steady state assumption of τ by using annual changes in vegetation biomass that derived from remote-sensing observations. We evaluate the changes in magnitude, spatial patterns, and uncertainties in vegetation carbon turnover times from 1992 to 2016. We found that the forest ecosystem is close to a steady state at global scale, contrasting with the larger differences between τ under steady state and τ under non-steady state at the grid cell level. The observation that terrestrial ecosystems are not in a steady state locally is deemed crucial when studying vegetation dynamics and the potential response of biomass to disturbance and climatic changes. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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