Antón Corrales, José Manuel and Grau Olive, Juan Bautista and Tarquis Alfonso, Ana Maria and Cisneros, J.M. and Andina de la Fuente, Diego
Decision theories used in planning of areas around La Colacha basin in Córdoba (Argentine) considering natural and human hazards.
In: "European Geosciences Union General Assembly 2010", 02/05/2010 - 07/05/2010, Viena, Austria.
The authors of U.P.M. have had relations with Argentine Universities and Administrations, in part with J.M.Cisneros that is Professor at Universidad Nacional de Rio Cuarto in Prov. de Córdoba Arg., and have applied Decision Theories with Mathematic tools for the planning of defences and uses of soils in these areas and especially of La Colacha bassin enlarged with larger areas around it as “Cuenca de los Arroyos Menores” at West and South of Rio Cuarto. These large ﬂat lands have loess soils brought by winds from Los Andes that are much far at West, there is a very old line of not high mountains at West near the study area from which rivers ﬂow with little slopes to somehow lower ﬂat areas at West with some marshes. Rivers through loess get regressive erosions with rains forming kilometres long ditches in the loess called “cárcavas” some meters deep and quite large across otherwise ﬂat agricultural lands, and J.M. Cisneros, that has numerous publications about local soil uses, has directed diverse genie rural works to halt the regression of some of them. Part of the study is about protection against ﬂoods and “cárcavas”. There are famous experiences and records of higher inundations of large areas by rivers. Latitude of Rio Cuarto is 31º25’ South, that area is temperate refreshed by south winds, Zonda föhn winds from West being hotter and drier, and there are monsoons and so winter in July is dry and summer and December has rains, that average 829mm per year. Wind erosion and ﬁres occur frequently on these loess soils in winter. This is an excellent area for agriculture but some actual uses may be not sustainable in long term such as excesses with genetically engineered soy, and the authors have studied aided with mathematical models (ELECTRE I, PROMETHEE and Expert Choice) the preferences of various alternative systems of land use (Autochthonous forest, High value forest, Traditional farms, Erosion control Crop with agriculture use, and Erosion control Crop with industrial use (biomass) ) in view of diverse Criteria (Water erosion index, Eolian erosion index, Implementation facility, Water resources, Economical Beneﬁts, Hand power, Environmental Impacts, social Acceptance), as contribution for territorial planning, in part in relation with local ofﬁcial agencies