| Texto completo | |
| Autor(es): Mostrar menos - |
Heinrich, Viola H. A.
;
Vancutsem, Christelle
;
Dalagnol, Ricardo
;
Rosan, Thais M.
;
Fawcett, Dominic
;
Silva Junior, Celso H. L.
;
Cassol, Henrique L. G.
;
Achard, Frederic
;
Jucker, Tommaso
;
Silva, Carlos A.
;
House, Jo
;
Sitch, Stephen
;
Hales, Tristram C.
;
Aragao, Luiz E. O. C.
Número total de Autores: 14
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Nature; v. 615, n. 7952, p. 19-pg., 2023-03-16. |
| Resumo | |
The globally important carbon sink of intact, old-growth tropical humid forests is declining because of climate change, deforestation and degradation from fire and logging(1-3). Recovering tropical secondary and degraded forests now cover about 10% of the tropical forest area(4), but how much carbon they accumulate remains uncertain. Here we quantify the aboveground carbon (AGC) sink of recovering forests across three main continuous tropical humid regions: the Amazon, Borneo and Central Africa(5,6). On the basis of satellite data products(4,7), our analysis encompasses the heterogeneous spatial and temporal patterns of growth in degraded and secondary forests, influenced by key environmental and anthropogenic drivers. In the first 20 years of recovery, regrowth rates in Borneo were up to 45% and 58% higher than in Central Africa and the Amazon, respectively. This is due to variables such as temperature, water deficit and disturbance regimes. We find that regrowing degraded and secondary forests accumulated 107 Tg C year(-1) (90-130 Tg C year(-1)) between 1984 and 2018, counterbalancing 26% (21-34%) of carbon emissions from humid tropical forest loss during the same period. Protecting old-growth forests is therefore a priority. Furthermore, we estimate that conserving recovering degraded and secondary forests can have a feasible future carbon sink potential of 53 Tg C year(-1) (44-62 Tg C year(-1)) across the main tropical regions studied. (AU) | |
| Processo FAPESP: | 19/21662-8 - Quantificando mortalidade de árvores com lasers: usando uma abordagem de fusão de dados e modelagem de última geração para estimar a perda de biomassa em florestas tropicais |
| Beneficiário: | Ricardo Dal'Agnol da Silva |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |
| Processo FAPESP: | 18/14423-4 - Modelagem decenal das emissões brutas de carbono derivadas de incêndios florestais na Amazônia |
| Beneficiário: | Henrique Luis Godinho Cassol |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |
| Processo FAPESP: | 20/02656-4 - Trocas líquidas de carbono na Amazônia, conciliando dados de satélite, dados terrestres e perfil atmosférico em uma década de observação usando abordagem de baixo para cima |
| Beneficiário: | Henrique Luis Godinho Cassol |
| Modalidade de apoio: | Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado |