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Article

Soil Moisture Behavior in Relation to Topography and Land Use for Two Andean Colombian Catchments

1
Departamento de Ingeniería, Facultad de Ingeniería Forestal, Universidad del Tolima, Calle 42 #1B-1, Barrio Santa Helena Parte Alta, Ibagué, Tolima 730006299, Colombia
2
Departamento de Geociencias y Medioambiente, Facultad de Minas, Universidad Nacional de Colombia Sede Medellín, Cra 80 No 65-223, Bloque M2-301, Medellín 111321, Colombia
*
Author to whom correspondence should be addressed.
Academic Editor: Gonzalo Martínez
Water 2021, 13(11), 1448; https://doi.org/10.3390/w13111448
Received: 7 April 2021 / Revised: 15 May 2021 / Accepted: 17 May 2021 / Published: 21 May 2021
(This article belongs to the Special Issue Soil–Plant–Water Dynamics on a Field Scale)
Understanding the soil moisture behavior in relation to land use in tropical Andean mountain catchments is essential for comprehending water fluxes, ecohydrological relations and hydrological dynamics in this understudied ecosystem. Soils are a key factor of these ecosystems, especially in reference to water level regulation and anthropogenic activities that can alter the interactions, and generate physical, chemical and biological imbalances. In this study, we investigated the relationship between precipitation, soil water content (SWC) and the flow at different pedon scales, and hillslope and microcatchment scales subjected to different land uses. The results showed the relation between the soils uses, topographical conditions and soil moisture at the microcatchment scale. At the pedon scale, soil moisture is higher and with a low variability in depth; high soil moisture content throughout the study period was registered in forest > pasture > coffee agroforestry systems. The topographic wetness index (TWI), despite its adjusted interpretation of the behavior of humidity at the microcatchment scale, is a poor predictor of the behavior of soil humidity at the pedon scale. Pedon water content has a close relation with the precipitation behavior, especially in prolonged dry and humid periods. The soils studied tend to present udic moisture regimes with a dry period of approximately 67 accumulative days per year. The mean flow behavior responds to precipitation and soil moisture behavior at a monthly scale. Understanding the consequences of the land cover changes in relation to soil water behavior, as well as how soil water interacts with the different components of the hydric balance at different scales, allows an understanding of the complex interactions in natural microcatchments under different land use systems. View Full-Text
Keywords: land uses; soil moisture behavior; pedon; microcatchment; hydropedology land uses; soil moisture behavior; pedon; microcatchment; hydropedology
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MDPI and ACS Style

Garzón-Sánchez, H.; Loaiza-Usuga, J.C.; Vélez-Upégui, J.I. Soil Moisture Behavior in Relation to Topography and Land Use for Two Andean Colombian Catchments. Water 2021, 13, 1448. https://doi.org/10.3390/w13111448

AMA Style

Garzón-Sánchez H, Loaiza-Usuga JC, Vélez-Upégui JI. Soil Moisture Behavior in Relation to Topography and Land Use for Two Andean Colombian Catchments. Water. 2021; 13(11):1448. https://doi.org/10.3390/w13111448

Chicago/Turabian Style

Garzón-Sánchez, Henry, Juan C. Loaiza-Usuga, and Jaime I. Vélez-Upégui 2021. "Soil Moisture Behavior in Relation to Topography and Land Use for Two Andean Colombian Catchments" Water 13, no. 11: 1448. https://doi.org/10.3390/w13111448

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