Open AccessEffects of the texture and organic matter values in the estimation of the soil water content at a regional scale
Author(s) -
Pedro PérezCutillas,
Gonzalo G. Barberá,
Carmelo Conesa-García
Publication year - 2018
Publication title -
cuadernos de investigación geográfica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.537
H-Index - 20
eISSN - 1697-9540
pISSN - 0211-6820
DOI - 10.18172/cig.3484
Subject(s) - pedotransfer function , permanent wilting point , soil texture , soil science , texture (cosmology) , water content , field capacity , loam , soil water , environmental science , scale (ratio) , consistency (knowledge bases) , mathematics , organic matter , geotechnical engineering , hydraulic conductivity , geology , geography , computer science , chemistry , cartography , geometry , organic chemistry , artificial intelligence , image (mathematics)
This study compares two methods for the estimation of hydraulic properties of the soil at the regional scale. Soil water content (θ) values was estimated at two fixed soil matric potential values), associated with the field capacity (θfc) and wilting point (θwp). The first method is carried out directly using (θ) values of analytical determinations, by modeling them as a function of environmental variables. The second method employed texture and organic matter (OM) information to obtain (θ) values by pedotransfer functions (PTFs). The comparison of both methods allows evaluating the effect of the textures and OM, of which a significant effect of these variables is produced, suggested that there is a considerable level of consistency between the two methods, despite some differences induced by coarse textures (sand) and OM.