@Article{StaalFlAgBoFeTu:2020:FeDrDe,
author = "Staal, Arie and Flores, Bernardo M. and Aguiar, Ana Paula Dutra de
and Bosmans, Joyce H. C. and Fetzer, Ingo and Tuinenburg, Obbe A
.",
affiliation = "{Stockholm University} and {Universidade Estadual de Campinas
(UNICAMP)} and {Instituto Nacional de Pesquisas Espaciais (INPE)}
and {Radboud University} and {Stockholm University} and {Utrecht
University}",
title = "Feedback between drought and deforestation in the Amazon",
journal = "Environmental Research Letters",
year = "2020",
volume = "15",
number = "4",
pages = "e044024",
month = "apr.",
keywords = "land use change, remote sensing, moisture recycling, fire,
modeling, forest clearing, agriculture.",
abstract = "Deforestation and drought are among the greatest environmental
pressures on the Amazon rainforest, possibly destabilizing the
forest-climate system. Deforestation in the Amazon reduces
rainfall regionally, while this deforestation itself has been
reported to be facilitated by droughts. Here we quantify the
interactions between drought and deforestation spatially across
the Amazon during the early 21st century. First, we relate
observed fluctuations in deforestation rates to dry-season
intensity; second, we determine the effect of conversion of forest
to cropland on evapotranspiration; and third, we simulate the
subsequent downwind reductions in rainfall due to decreased
atmospheric water input. We find large variability in the response
of deforestation to dry-season intensity, with a significant but
small average increase in deforestation rates with a more intense
dry season: with every mm of water deficit, deforestation tends to
increase by 0.13% per year. Deforestation, in turn, has caused an
estimated 4% of the recent observed drying, with the south-western
part of the Amazon being most strongly affected. Combining both
effects, we quantify a reinforcing drought-deforestation feedback
that is currently small, but becomes gradually stronger with
cumulative deforestation. Our results suggest that global climate
change, not deforestation, is the main driver of recent drying in
the Amazon. However, a feedback between drought and deforestation
implies that increases in either of them will impede efforts to
curb both.",
doi = "10.1088/1748-9326/ab738e",
url = "http://dx.doi.org/10.1088/1748-9326/ab738e",
issn = "1748-9326",
language = "en",
targetfile = "Staal_feedback.pdf",
urlaccessdate = "27 abr. 2024"
}