Presentación de PowerPoint poste… · Land Use Land Cover as a consequence and a driver for soil...

Land Use Land Cover as a consequence and a driver for soil quality changes Cordovil, C M d S 1 , Marinheiro J 1 , Vale M J 2 , Reis R 2 , Dalgaard T 3 , Hutchings NJ 3 1 Universidade de Lisboa, Instituto Superior de Agronomia, LEAF, Tapada da Ajuda, 1349-017 Lisboa, Portugal 2 Direção Geral do Território, Rua Artilharia Um, 107, 1099-052 Lisbon, Portugal 3 Department of Bioscience, Aarhus University, Vejlsovej 25, 8600, Silkeborg, Denmark Introduction • Land use and land cover changes are directly related to soil use and can therefore be associated to soil organic matter depletion and water contamination with nitrates. • These and other factors that may alter water and soil quality. • Changes in land use are a result of external drivers mainly related to urban growth, agricultural and livestock production policies, aligned with economic growth and food requirement increase. Agriculture Livestock Urban Methods • Data about historical land use land cover uses in Portugal was officially produced covering the last decades. This data are being analysed and combined with other soil use data, agricultural practices integrated in official databases, in order to find potential drivers for soil use change impact on water quality related to reactive nitrogen. • These integrated datasets are being analysed to select drivers that better explain soil use evolution and related impacts on soil and water quality in Portugal mainland (located in Tagus river basin – Zêzere watershed) Results Conclusions Nitrogen pollution from urban, agriculture and livestock discharges is a main environmental pressure on watersheds within the Tagus river basin, namely in the Zêzere case study. Pressure evaluation is particularly relevant in watersheds with drinking water catchment, which is the case of Zêzere, responsible for 1/5 of the Portuguese drinking water supply. Evaluating this pressure is relevant and difficult and must make use of the different available datasets, and monitoring methodologies. Acknowledgements. Authors thank the NitroPortugal, H2020-TWINN-2015, a Coordination & support action n. 692331 project for funding. Artificial areas per capita (1990) per municipality around the selected river basin (Zêzere watershed) Land use change (urban/artificial) between 1990 and 2012 for the Zêzere watershed (part of Tagus river basin). Artificial surfaces evaluation (COS-soil use; CLC-Corine Land Cover) Monitoring pressures of different uses, which impact on drainage into the Tagus/Zêzere river basin, with a watershed approach. . y = 59,907ln(x) - 180,3 R² = 0,2139 y = 160,02ln(x) - 610,79 R² = 0,4675 0 100 200 300 400 500 600 700 800 0 100 200 300 400 500 600 700 800 COS (ha) CLC (ha) CLC90/COS90 CLC2012/COS2010 0,000 0,005 0,010 0,015 0,020 0,025 0,030 0,035 0,040 0,045 0,050 APELAÇÃO BOBADELA BUCELAS CAMARATE FANHÕES FRIELAS LOURES LOUSA MOSCAVIDE PORTELA PRIOR VELHO SACAVÉM SANTA IRIA DE AZOIA SANTO ANTÃO DO TOJAL SANTO ANTÓNIO DOS CAVALEIROS SÃO JOÃO DA TALHA SÃO JULIÃO DO TOJAL UNHOS ha per capita 1990 Objective Evaluate land use land cover changes impact on water and soil quality . Impact of urban/artificial areas on water quality monitoring parameters

Upload
others
Category

Documents
view
0
download
0

Embed Size (px):

Transcript of Presentación de PowerPoint poste… · Land Use Land Cover as a consequence and a driver for soil...

Page 1: Presentación de PowerPoint poste… · Land Use Land Cover as a consequence and a driver for soil quality changes Cordovil, C M d S1, Marinheiro J1, Vale M J2, Reis R2, Dalgaard

Intr

uct

ion

• Land use and land cover changes are directly related to soil use and can therefore be associated to soil organic matter depletion and water contamination with nitrates.

• These and other factors that may alter water and soil quality. • Changes in land use are a result of external drivers mainly related to urban growth, agricultural and livestock

production policies, aligned with economic growth and food requirement increase.

Agriculture Livestock Urban

Met

ds • Data about historical land use land cover uses in Portugal was officially produced covering the last decades. This data

are being analysed and combined with other soil use data, agricultural practices integrated in official databases, in order to find potential drivers for soil use change impact on water quality related to reactive nitrogen.

• These integrated datasets are being analysed to select drivers that better explain soil use evolution and related impacts

on soil and water quality in Portugal mainland (located in Tagus river basin – Zêzere watershed)

sult

s C

clu

sio

Nitrogen pollution from urban, agriculture and livestock discharges is a main environmental pressure on watersheds within the Tagus river basin, namely in the Zêzere case study.

Pressure evaluation is particularly relevant in watersheds with drinking water catchment, which is the case of Zêzere, responsible for 1/5 of the Portuguese drinking water supply.

Evaluating this pressure is relevant and difficult and must make use of the different available datasets, and monitoring methodologies.

Acknowledgements. Authors thank the NitroPortugal, H2020-TWINN-2015, a Coordination & support action n. 692331 project for funding.

Artificial areas per capita (1990) per municipality around the selected river basin (Zêzere watershed)

Land use change (urban/artificial) between 1990 and 2012 for the Zêzere watershed (part of Tagus river basin).

Artificial surfaces evaluation (COS-soil use; CLC-Corine Land Cover)

Monitoring pressures of different uses, which impact on drainage into the Tagus/Zêzere river basin, with a watershed approach. .

y = 59,907ln(x) - 180,3 R² = 0,2139

y = 160,02ln(x) - 610,79 R² = 0,4675

100

200

300

400