Impacto hidrológico del cambio de uso del suelo de un pastizal nativo a praderas de zacate buffel (Pennisetum ciliare L.)

Velásquez-Valle, Miguel Agustín; Sánchez-Cohen, Ignacio; Gutiérrez-Luna, Ramón; Muñoz-Villalobos, J. Arcadio; Macías-Rodríguez, Hilario

doi:10.5154/r.rchsza.2013.10.004

Cited by 4 publications

(1 citation statement)

References 14 publications

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“…The growth form of bunchgrasses can also lead to the self-shading of their foliage, reducing the overall amount of the photosynthetically active leaf area [19]. Conversely, the foliage of sod-forming grasses tends to be more abundant and continuous due to their spreading (rhizomatous) nature, contributing to greater overall coverage of foliage [20] compared to bunchgrasses. In this context, the canopies of sod-forming grasses are comparatively denser (i.e., more foliage or green matter) than bunchgrasses, which, for our research purposes, was considered to have a sparse canopy.…”

Section: Forage Data Collectionmentioning

confidence: 99%

Using Unmanned Aerial Vehicles and Multispectral Sensors to Model Forage Yield for Grasses of Semiarid Landscapes

Hernandez,

Jensen,

Larson

et al. 2024

Grasses

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Forage yield estimates provide relevant information to manage and quantify ecosystem services in grasslands. We fitted and validated prediction models of forage yield for several prominent grasses used in restoration projects in semiarid areas. We used field forage harvests from three different sites in Northern Utah and Southern California, USA, in conjunction with multispectral, high-resolution UAV imagery. Different model structures were tested with simple models using a unique predictor, the forage volumetric 3D space, and more complex models, where RGB, red edge, and near-infrared spectral bands and associated vegetation indices were used as predictors. We found that for most dense canopy grasses, using a simple linear model structure could explain most (R2 0.7) of the variability of the response variable. This was not the case for sparse canopy grasses, where a full multispectral dataset and a non-parametric model approach (random forest) were required to obtain a maximum R2 of 0.53. We developed transparent protocols to model forage yield where, in most circumstances, acceptable results could be obtained with affordable RGB sensors and UAV platforms. This is important as users can obtain rapid estimates with inexpensive sensors for most of the grasses included in this study.

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Section: Forage Data Collectionmentioning

confidence: 99%

Using Unmanned Aerial Vehicles and Multispectral Sensors to Model Forage Yield for Grasses of Semiarid Landscapes

Hernandez,

Jensen,

Larson

et al. 2024

Grasses

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Displacement of Sodium, Potassium, Calcium, Magnesium and Improvements in a Saline Soil Treated with Organic and Chemical Amendments

et al. 2019

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The accumulation of salts in the soil produces conditions that affect the growth of most crops. Currently, soil amendments have been used to improve the texture and chemical & biological reactions of the soil. The objective of this work was to simulate the transport of sodium, potassium, calcium and magnesium in columns of saline soil through the use of organic and chemical amendments. Saline soil samples of the municipality of Tlahuelilpan, Hidalgo state, Mexico were studied. Compost, vermicompost, phosphogypsum and malting barley husk were used as amendments. The results showed that the highest metal element removal was obtained with the combined treatment of vermicompost at 4 % and phosphogypsum at 2 % (V4FY2) (59 %). Improvements in soil physico-chemical properties were also observed. These findings indicated that the combination of organic and chemical amendments promotes the leaching of metals, (mainly sodium). Therefore, the amendments evaluated in this study can be a good alternative for the remediation and improvement of saline soils.

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Impacto del uso del rodillo aireador para la siembra de pasto en el proceso hidrológico de una cuenca con lluvia natural y en condiciones de lluvia simulada

Mauricio-Pérez,

Sánchez-Cohen,

Pedroza-Sandoval

et al. 2023

Tecnol. cienc. agua

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La investigación se realizó en la Región Hidrológica 36 (ríos Nazas-Aguanaval), zona árida del norte de México. En 2017, parte de la cuenca fue alterada durante el establecimiento de pasto buffel (Cenchrus ciliaris L.) con rodillo aireador (RA). El objetivo de esta investigación fue proponer un marco metodológico para integrar y analizar la información experimental de una cuenca de zonas áridas. El impacto del RA se cuantificó mediante el uso de simulador de lluvia in situ en el área de la cuenca. Los resultados indican que el empleo de RA provoca un retraso en el inicio del escurrimiento. De igual manera, la producción de escurrimiento fue menor en la parcela donde se utilizó el RA, con una producción media de 0.000004 m3s-1, mientras que la producción media de escurrimiento en las parcelas bajo condiciones naturales (testigo) fue de 0.000016 m3s-1. Además, la producción de sedimentos en la parcela con paso de RA fue significativamente mayor en la producción de sedimentos, con un valor medio de 833 mgl-1; en tanto que en la parcela experimental bajo condiciones naturales, la producción media de sedimentos fue de 470 mgl-1. Se infiere que las microdepresiones causadas por el RA capturaron el agua de lluvia ejerciendo una mayor retención del líquido en el suelo, lo cual redujo la escorrentía y aumentó la infiltración de agua en la cuenca. Los hallazgos muestran que, debido al tamaño, la cuenca (158.87 ha) es muy sensible a los cambios en los regímenes de precipitación y la cubierta vegetal.

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Impacto hidrológico del cambio de uso del suelo de un pastizal nativo a praderas de zacate buffel (Pennisetum ciliare L.)

Cited by 4 publications

References 14 publications

Using Unmanned Aerial Vehicles and Multispectral Sensors to Model Forage Yield for Grasses of Semiarid Landscapes

Using Unmanned Aerial Vehicles and Multispectral Sensors to Model Forage Yield for Grasses of Semiarid Landscapes

Displacement of Sodium, Potassium, Calcium, Magnesium and Improvements in a Saline Soil Treated with Organic and Chemical Amendments

Impacto del uso del rodillo aireador para la siembra de pasto en el proceso hidrológico de una cuenca con lluvia natural y en condiciones de lluvia simulada

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