@InProceedings{HeinrichSCRASCHSHAAA:2021:QuSpPa,
author = "Heinrich, Viola H. A. and Silva, Ricardo Dal'Agnol da and Cassol,
Henrique Lu{\'{\i}}s Godinho and Rosan, Thais and Almeida,
Catherine Torres de and Silva J{\'u}nior, Celso Henrique Leite
and Campanharo, Wesley Augusto and House, Joanna I. and Sitch,
Stephen and Hales, Tristram C. and Adami, Marcos and Anderson,
Liana O. and Arag{\~a}o, Luiz Eduardo Oliveira e Cruz de",
affiliation = "{University of Bristol} and {Instituto Nacional de Pesquisas
Espaciais (INPE)} and {Instituto Nacional de Pesquisas Espaciais
(INPE)} and {University of Exeter} and {Instituto Nacional de
Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas
Espaciais (INPE)} and {Instituto Nacional de Pesquisas Espaciais
(INPE)} and {University of Bristol} and {University of Exeter} and
{Cardiff University} and {Instituto Nacional de Pesquisas
Espaciais (INPE)} and {Centro Nacional de Monitoramento e Alertas
de Desastres Naturais (CEMADEN)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)}",
title = "Quantifying the spatial patterns of Secondary Forest carbon
sequestration potential in the Brazilian Amazon",
year = "2021",
organization = "EGU General Assembly",
publisher = "EGU",
abstract = "Overall, global forests are expected to contribute about a quarter
of pledged mitigation under the Paris Agreement, by limiting
deforestation and by encouraging forest regrowth. Secondary
Forests in the Neo-tropics have a large climate mitigation
potential, given their ability to sequester carbon up to 20 times
faster than old-growth forests. However, this rate does not
account for the spatial patterns in secondary forest regrowth
influenced by regional and local-scale environmental and
anthropogenic disturbance drivers. Secondary Forests in the
Brazilian Amazon are expected to play a key role in achieving the
goals of the Paris Agreement, however, the Amazon is a large and
geographically complex region such that regrowth rates are not
uniform across the biome. To understand the impact of key drivers
we used a multi-satellite data approach with the aim of
understanding the spatial variations in secondary forest regrowth
in the Brazilian Amazon. We mapped secondary forest area and age
using a land-use-land-cover dataset MapBiomas and, combined with
the European Space Agency Aboveground Carbon dataset, constructed
regional regrowth curves for the year 2017. We found large
variations in the regrowth rates across the Brazilian Amazon due
to large-scale environmental drivers such as rainfall and
shortwave-radiation. Regrowth rates are similar to previous
pan-Amazonian estimates in the North-West (3 ±1.0 MgC ha-1 yr-1),
which are double than those in the North-East Amazon (1.3 ±0.3 MgC
ha-1 yr-1). The impact of anthropogenic disturbances, namely fire
and repeated deforestation prior to the most recent regrowth only
reduces the regrowth by 20% in the North-West (2.4 ±0.8 MgC ha-1
yr-1) compared to 55% in the North-East (0.8 ±0.8 MgC ha-1 yr-1).
Overall, secondary forest carbon stock of 294 TgC in the year
2017, could have been 8% higher with avoided fires and repeat
deforestation. We found that the 2017 area of secondary forest,
which occupies only ~4% of the Brazilian Amazon biome, can
contribute significantly (~5.5%) to Brazils net emissions
reduction targets, accumulating ~19.0 TgC yr-1until 2030 if the
current area of secondary forest is maintained (13.8 Mha).
However,this value reduces rapidly to less than 1% if only
secondary forests older than 20 years are preserved (2.2 Mha).
Preserving the remaining old-growth forest carbon stock and
implementing legal mechanisms to protect and expand secondary
forest areas are key to realising the potential of secondary
forest as a nature-based climate change mitigation solution.",
conference-location = "Online",
conference-year = "19-30 apr.",
doi = "10.5194/egusphere-egu21-7956",
url = "http://dx.doi.org/10.5194/egusphere-egu21-7956",
language = "en",
targetfile = "EGU21-7956-print.pdf",
urlaccessdate = "03 jun. 2024"
}