Land use can offset climate change induced increases in erosion in Mediterranean watersheds

Autor: Wouter Buytaert, Xavier Rodriguez-Lloveras, Gerardo Benito
Přispěvatelé: Ministerio de Economía y Competitividad (España)
Rok vydání: 2016
Předmět:
Geochemistry & Geophysics
010504 meteorology & atmospheric sciences
0208 environmental biotechnology
Land management
Soil Science
Climate change adaptation
PHYSICAL-PROPERTIES
Climate change
02 engineering and technology
01 natural sciences
SEDIMENT YIELD
Agricultural land
Downscaling
media_common.cataloged_instance
Land use
land-use change and forestry
GENERAL-CIRCULATION MODEL
0503 Soil Sciences
Geosciences
Multidisciplinary
European union
PART II
0105 earth and related environmental sciences
Earth-Surface Processes
media_common
Science & Technology
SOIL-EROSION
OCEAN CIRCULATION
Land use
IBERIAN PENINSULA
SOUTHEAST SPAIN
Geology
Agriculture
TETIS
020801 environmental engineering
LAST GLACIAL MAXIMUM
0403 Geology
Erosion
LINEAR-MODELS
Climatology
Physical Sciences
Water Resources
Physical geography
Surface runoff
Life Sciences & Biomedicine
0406 Physical Geography And Environmental Geoscience
Zdroj: Digital.CSIC. Repositorio Institucional del CSIC
instname
ISSN: 0341-8162
2010-2100
DOI: 10.1016/j.catena.2016.04.012
Popis: The aim of this paper is to assess the impacts of projected climate change on a Mediterranean catchment, and to analyze the effects of a suite of representative land use practices as an adaptation tool to reduce climate change-driven erosion and hydrologic extremes. Relevant climatic variables from the ERA-Interim global atmospheric reanalysis of the European Centre for Medium-Range Weather Forecasts (ECMWF) were downscaled for the study area, and perturbed with the anomalies of 23 global circulation models for three emission scenarios (B1, A1B and A2). Both a projected daily rainfall time series for the period 2010-2100, and a single precipitation event with a one-hundred year return period were used to assess the impact of climate change. The downscaled data were fed into a distributed hydro-sedimentary model (TETIS) with five land use configurations representative of future demographic tendencies, geographical characteristics and land management policies (e.g. European Union CAP). The projected changes showed a general decrease in runoff and sediment production by the end of the century regardless of land use configuration. Sediment production showed a positive relationship with an increase in agricultural land and a decrease in natural land under present day agricultural management. According to our simulations, some conservation practices in agriculture can effectively reduce net erosion while maintaining agricultural production. As such, they can play a critical role as an adaptation tool to reduce climate change impacts in the 21st century.
This study was funded by the Spanish Ministry of Economy and Competitiveness through the research projects CLARIES (ref. CGL2011-29176) and PALEOMED (CGL2014-58127-C3-1-R).
Databáze: OpenAIRE
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