Relación de la ratio del coeficiente de cultivo y de la evapotranspiración potencial (kc·eto-1), con el contenido de carbono (c) en suelos cultivados y forestales, en clima mediterráneo semiárido

摘要

They have been evaluated soil C content, in large-scale spatial units, by the following material: detail topography (MDT with pixels of 5x5 m); land uses (Orthophotos 1:5.000, and Corine and MFE to 1: 50.000); map of developing own of the ETo by pixel of 10x10 m and the crop coefficient (Kc); and geo-referenced of organic matter analysis (C), soil Ap or A1 horizon. Using the quadratic regression between the ratio Kc·ETo-1 and the corresponding analytical values of C in the soil, have been calculated t·ha-1 of C of each pixel 10x10 m, thus saving the work of analytical laboratory and specimen collection.The model is predictive application in semiarid climates, because it allows to simulate variations in climate parameters and land use. Thus they could predict scale detail, deterioration processes medium, for example, increased desertification, by lowering the sustainability quantitated by loss of organic matter (C) in the soil; or amelioration, quantified by increased C fixed. All this from quantifying the correlation of climate and soilvegetation