@Article{LimaAdaAmaBezAgu:2019:ChSeVe,
author = "Lima, Raquel Carvalho de and Adami, Marcos and Amaral, Silvana and
Bezerra, Francisco Gilney and Aguiar, Ana Paula Dutra",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas
Espaciais (INPE)} and {Instituto Nacional de Pesquisas Espaciais
(INPE)}",
title = "Changes in secondary vegetation dynamics in a context of
decreasing deforestation rates in Par{\'a} Brazilian Amazon",
journal = "Applied Geography",
year = "2019",
volume = "106",
pages = "40--49",
month = "May",
keywords = "Secondary vegetation, clustering patterns, pasture, agriculture,
brazilian amazon.",
abstract = "Tropical secondary vegetation is of particular interest as carbon
sinks, potential lands for agriculture and livestock expansion,
biodiversity conservation and ecosystem services. Until mid-2000s
estimates of secondary vegetation in the Brazilian Amazon
indicated a progressive increase of this cover, however after
2010, only 1197 km 2 of additional secondary vegetation were
generated, while 42,040 km 2 were converted into other
land-covers. Meanwhile, deforestation rates progressively
decreased to be around 6000 km 2 in contrast to the peak of 27,772
km 2 in 2004, what suggests that changes in land-cover dynamics
with respect to deforestation may be related to a reduction in
secondary vegetation. Hence, in this paper, we work with the
hypothesis that, in a context of decreasing deforestation rates,
the historic pattern of progressive accumulation of secondary
vegetation in the Brazilian Amazon changed as a consequence of the
re-conversion of this cover, as well as other land-covers relevant
in the process of regeneration, into different land-covers that
expanded in this period. Our focus was then to investigate, on a
regional scale, the spatiotemporal patterns of secondary
vegetation with respect to different land-covers in Par{\'a}
based on (i) a quantitative analysis of transitions between
land-covers, and (ii) on clustering patterns of secondary
vegetation cover and their relations with clustering patterns of
pastures, small-scale and industrial agriculture. We found that
more secondary vegetation was converted into land-covers that
expanded in the period i.e. clean pasture, mechanized agriculture,
and palm oil, with secondary vegetation and land-covers important
for regeneration (i.e. small-scale agriculture and regeneration
with pasture) experiencing an overall reduction and contributing
less to the concentration of secondary vegetation after 2010.
Clusters of high values (hotspots) of secondary vegetation
prevailed in the north, while clusters of low values (cold spots)
prevailed in the south of Par{\'a} a pattern that is explained by
different histories of occupation and deforestation dynamics, as
well as distinct regional land dynamics in the past decade. As a
first contribution to understanding the dynamics of secondary
vegetation in a context of decreasing deforestation rates, our
results show that the increased pressure to halt deforestation had
effects over the dynamics of this land-cover, as well as over
land-covers relevant to regeneration.",
doi = "10.1016/j.apgeog.2019.03.001",
url = "http://dx.doi.org/10.1016/j.apgeog.2019.03.001",
issn = "0143-6228",
language = "en",
targetfile = "carvalho_changes.pdf",
urlaccessdate = "04 maio 2024"
}