Changes in biomass turnover times in tropical forests and their environmental drivers from 2001 to 2012
Autor: | Philippe Ciais, Ashley P. Ballantyne, Xiaomeng Huang, Jingmeng Wang, Daniel S. Goll, Wei Li, Zhe Zhao, Lei Zhu |
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Přispěvatelé: | Tsinghua University [Beijing] (THU), Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] (LSCE), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), ICOS-ATC (ICOS-ATC), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), Department of Ecosystem and Conservation Sciences, University of Montana, University of Augsburg [Augsburg], Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), University of Augsburg (UNIA) |
Jazyk: | angličtina |
Rok vydání: | 2021 |
Předmět: |
0106 biological sciences
tropical forest 010504 meteorology & atmospheric sciences net prime production (NPP) Biomass 010603 evolutionary biology 01 natural sciences turnover time carbon use efficiency (CUE) Earth and Planetary Sciences (miscellaneous) ddc:550 GE1-350 [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment ComputingMilieux_MISCELLANEOUS QH540-549.5 0105 earth and related environmental sciences General Environmental Science [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere biomass Ecology 15. Life on land Tropical forest Environmental sciences Turnover time 13. Climate action Environmental science |
Zdroj: | Earth's Future, Vol 9, Iss 1, Pp n/a-n/a (2021) Earth's Future Earth's Future, American Geophysical Union, 2021, 9 (1), ⟨10.1029/2020EF001655⟩ Earth's Future, 2021, 9 (1), ⟨10.1029/2020EF001655⟩ |
ISSN: | 2328-4277 |
Popis: | Tropical forests store about 70% of the total living biomass on land and yet very little is known about changes in this vital carbon reservoir. Changes in their biomass stock, determined by changes in carbon input (i.e., net primary production [NPP]) and carbon turnover time (τ), are critical to the global carbon sink. In this study, we calculated transient τ in tropical forest biomass using satellite‐based biomass and moderate‐resolution imaging spectroradiometer (MODIS) NPP and analyzed the trends of τ and NPP from 2001 to 2012. Results show that τ and NPP generally have opposite trends across the tropics. Increasing NPP and decreasing τ (“N+T−”) mainly distribute in central Africa and the northeast region of South America, while decreasing NPP and increasing τ (“N−T+”) prevail in Southeast Asia and western Amazon forests. Most of the N+T− tropical forest areas are associated with mean annual precipitation (MAP) below 2,000 mm·y−1 and most N−T+ tropical forests with MAP above 2,000 mm·y−1. The τ and NPP trends in the N+T− region are statistically associated with radiation, precipitation and vapor pressure deficit (VPD), while the τ and NPP trends in the N−T+ region are mainly associated with temperature and VPD. Our results inherit the uncertainties from the satellite‐based datasets and largely depend on the carbon use efficiency from MODIS. We thus systematically assessed the robustness of the findings. Our study reveals regional patterns and potential drivers of biomass turnover time and NPP changes and provides valuable insights into the tropical forest carbon dynamics. |
Databáze: | OpenAIRE |
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