@Article{MouraBGDESGBOS:2020:CaStUs,
author = "Moura, Yhasmin Mendes de and Balzter, Heiko and Galv{\~a}o,
L{\^e}nio Soares and Dalagnol da Silva, Ricardo and
Esp{\'{\i}}rito-Santo, Fernando and Santos, Erone G. and Garcia,
Mariano and Bispo, Polyanna da Concei{\c{c}}{\~a}o and Oliveira
J{\'u}nior, Raimundo C. and Shimabukuro, Yosio Edemir",
affiliation = "{University of Leicester} and {University of Leicester} and
{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {University of
Leicester} and {University of Helsinki} and {Universidad de
Alcal{\'a}} and {University of Manchester} and {Empresa
Brasileira de Pesquisa Agropecu{\'a}ria (EMBRAPA)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)}",
title = "Carbon dynamics in a human-modified tropical forest: a case study
using multi-temporal LiDAR data",
journal = "Remote Sensing",
year = "2020",
volume = "12",
number = "3",
pages = "e430",
month = "feb.",
keywords = "airborne LiDAR, Amazon forest, aboveground carbon, canopy height,
forest disturbance.",
abstract = "Tropical forests hold significant amounts of carbon and play a
critical role on Earth ' s climate system. To date, carbon
dynamics over tropical forests have been poorly assessed,
especially over vast areas of the tropics that have been affected
by some type of disturbance (e.g., selective logging, understory
fires, and fragmentation). Understanding the multi-temporal
dynamics of carbon stocks over human-modified tropical forests
(HMTF) is crucial to close the carbon cycle balance in the
tropics. Here, we used multi-temporal and high-spatial resolution
airborne LiDAR data to quantify rates of carbon dynamics over a
large patch of HMTF in eastern Amazon, Brazil. We described a
robust approach to monitor changes in aboveground forest carbon
stocks between 2012 and 2018. Our results showed that this
particular HMTF lost 0.57 myr(-1) in mean forest canopy height and
1.38 MgCha(-1)yr(-1) of forest carbon between 2012 and 2018.
LiDAR-based estimates of Aboveground Carbon Density (ACD) showed
progressive loss through the years, from 77.9 MgCha(-1) in 2012 to
53.1 MgCha(-1) in 2018, thus a decrease of 31.8%. Rates of carbon
stock changes were negative for all time intervals analyzed,
yielding average annual carbon loss rates of -1.34
MgCha(-1)yr(-1). This suggests that this HMTF is acting more as a
source of carbon than a sink, having great negative implications
for carbon emission scenarios in tropical forests. Although more
studies of forest dynamics in HMTFs are necessary to reduce the
current remaining uncertainties in the carbon cycle, our results
highlight the persistent effects of carbon losses for the study
area. HMTFs are likely to expand across the Amazon in the near
future. The resultant carbon source conditions, directly
associated with disturbances, may be essential when considering
climate projections and carbon accounting methods.",
doi = "10.3390/rs12030430",
url = "http://dx.doi.org/10.3390/rs12030430",
issn = "2072-4292",
language = "en",
targetfile = "moura_carbon.pdf",
urlaccessdate = "27 abr. 2024"
}