Bibliographic citations
Oscanoa, L., (2016). Influencia de las prácticas de conservación de suelos y mejora de la función hidrológica de praderas naturales altoandinas [Tesis, Universidad Nacional Agraria La Molina]. https://hdl.handle.net/20.500.12996/2843
Oscanoa, L., Influencia de las prácticas de conservación de suelos y mejora de la función hidrológica de praderas naturales altoandinas [Tesis]. : Universidad Nacional Agraria La Molina; 2016. https://hdl.handle.net/20.500.12996/2843
@phdthesis{renati/1115240,
title = "Influencia de las prácticas de conservación de suelos y mejora de la función hidrológica de praderas naturales altoandinas",
author = "Oscanoa Gamarra, Luis Lizardo",
publisher = "Universidad Nacional Agraria La Molina",
year = "2016"
}
Under the context of increasing climate change effects, native rangeland degradation and water scarcity, research focused on the effect of soil conservation practices – PC (pits, furrows and revegetation) on the parameters of the rangeland water function – PFH (biomass, litter, temperature, infiltration, humidity), soil erosion, eco-hydrological characterization and water function of experimental plots in Urpay subwatershed. Geographic information systems, remote sensing and edaphic-agrostolical approach were applied in the eco-hydrological modeling of the subwatershed and the program HEC-HMS was used for simulating its seasonal water function (dry season and beginning, middle and end of wet season) from 2011 to 2013. Soil humidity showed statistical significance (P<0.05) for factors: technique, season, and season – PC interaction; while biomass and soil infiltration only showed differences in factors interaction. All mean values were more favorable for furrows referring aboveground biomass (1755 kg ms/ha), litter (402 kg ms/ha), temperature (11°C), infiltration (0.120 cm/min) and soil humidity (20.8 %) than for pits or control. Soil erosion was better controlled by furrows than pits and control (36, 45 y 58 tm/ha/2 years respectively). The subwatershed (2449 Has) eco-hydrological model found plots with poor (34%), regular (28%), acceptable (19%) and critical (18%) condition. Simulation of water yield with PC was performed in high eco-hydrological condition plots and despite not presenting statistical significance; they show seasonal differences (95% confidence). On balance, the less discharge results from revegetated plots, at the end of wet season, suggest the best capacity for water retention by the soil in the Urpay subwatershed.
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