@InProceedings{CastroVonRCard:2019:ChAmBr,
author = "Castro, Aline Anderson de and Von Randow, Celso and Cardoso,
Manoel Ferreira",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)}",
title = "Changes in the Amazon and Brazilian Cerrado’s water resources due
to land use change in the last 40 years",
year = "2019",
organization = "EGU General Assembly",
abstract = "Understanding how land use change can affect natural dynamics of
water resources in Amazon and Brazilian Cerrado is of importance
due to the constant pressure for deforestation suffered by these
biomes. In this work, the dynamic vegetation model with river
routing and flood dynamics INLAND-THMB (Integrated LAND Surface
Model - Terrestrial Hydrology Model with Biogeochemistry) was used
to simulate how land use change (LUC) can affect the water
balance, river discharge and flood dynamics in the Amazon Basin
and in Brazilian Cerrado. To achieve this goal, we performed
simulations following the recent Global Carbon Budget Land
modelling protocol (Trendy-v7) and compared the S2 (historical CO2
and climate and time-invariant 1700 land use mask) and S3
(historical CO2, climate and land use). Thus we can evaluate the
effects of LUC keeping the information of dry and wet events
during the period. To better represent the land use state in S3
simulation, we compiled deforestation information from the
PRODES/INPE project in the Brazilian Amazon and Cerrado and
produced a map with remaining natural area for each year. The
evaluation was performed to each biome separately and also in some
of their sub-basins. In the Amazon, we looked at the upstream
Amazon Basin (Alto Solim{\~o}es), which includes an area with
very low LUC, and at the Madeira, Tapaj{\'o}s and Xingu all in
the arc of deforestation and in Cerrado at Tocantins Basin.
Preliminary results show higher river discharge related to LUC, as
expected, and also less available water, since the ET decreases
when we include anthropic changes in land cover in the model. It
is important to highlight that this study did not include
atmospheric feedbacks in the precipitation, which can mask some of
the results, since considerable amount of the Amazon precipitation
is provided by recycling as shown in previous studies.",
conference-location = "Vienna, Austria",
conference-year = "07-12 apr.",
language = "en",
targetfile = "EGU2019-10271.pdf",
urlaccessdate = "13 maio 2024"
}