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2 resultados encontrados para: AUTOR: Morales Ruiz, Danilo Enrique
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Capítulo de libro - Memoria en libro con arbitraje
Relación carbono: fósforo en suelos mexicanos - una revisión
Aryal, Deb Raj (autor) ; Morales Ruiz, Danilo Enrique (autor) ; Casanova Lugo, Fernando (autor) ; Villanueva López, Gilberto (autor) ;
Disponible en línea
Contenido en: Estado actual del conocimiento del ciclo del carbono y sus interacciones en México: síntesis a 2018 / Fernando Paz, Alma Velázquez y Marlén Rojo, editores Álamos, Sonora, México: Programa Mexicano del Carbono : Instituto Tecnológico de Sonora, 2018 páginas 492-298 ISBN:978-607-96490-6-7
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Resumen en: Español | Inglés |
Resumen en español

El fosforo (P) es un elemento esencial para todos los seres vivos. La litosfera contiene pocas concentraciones de P y los depósitos geológicos se encuentran heterogéneamente distribuidos en el planeta. Como un elemento esencial para varios procesos metabólicos, entre otra, la fotosíntesis, el P puede limitar la capacidad de captura de carbono en ecosistemas terrestres. El objetivo de este estudio fue evaluar el contenido de fosforo y la relación de carbono: fosforo en suelos mexicanos mediante la síntesis y análisis de datos publicados. Los resultados demostraron que los suelos mexicanos en promedio contienen de 14.1±1.3 a 70.5±11.5 mg P kg-¹. Los ecosistemas costeros como manglares presentaron mayores contenidos de P, mientras los suelos agrícolas presentaron las más bajas concentraciones. Los promedios de la relación C: P variaron de 3 065:1 a 9 146:1 dependiendo el tipo de suelo y el ecosistema. No se encontró una diferencia significativa entre zonas climáticas por las altas variaciones entre los sitios dentro de la misma zona climática. La baja concentración de P en suelos agrícolas de México podría limitar la producción agropecuaria si no se buscan las estrategias sustentables de reciclaje de fosforo. Sin embargo, se requiere estudios sobre las formas de fosforo y de cobertura amplia para entender bien la dinámica de fosforo en ecosistemas terrestres de México.

Resumen en inglés

Phosphorus (P) is an essential element for all living beings. The lithosphere contains low concentrations of P and the geological deposits are heterogeneously distributed on the planet. As an essential element for several metabolic processes, among others, photosynthesis, P can limit the capacity of carbon capture in terrestrial ecosystems. The objective of this study was to evaluate the phosphorus content and the carbon: phosphorus ratio in soils of Mexico through the synthesis and analysis of the published data. The results showed that Mexican soils on average contain from 14.1 ± 1.3 to 70.5 ± 11.5 mg P kg-¹. Coastal ecosystems such as mangroves presented higher P contents, while agricultural soils showed the lowest P concentrations. The average C: P ratio varied from 3 065:1 to 9 146:1 depending upon soil type and ecosystem. No significant difference was found between climatic zones due to the high variations between the sites within the same climatic zone. The low concentration of P in agricultural soils in Mexico could limit agricultural production if sustainable phosphorus recycling strategies are not sought. However, further studies are required on the forms of phosphorus and wider coverage to better understand the phosphorus dynamics in terrestrial ecosystems of Mexico.


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Resumen en: Inglés |
Resumen en inglés

Land use change from forests to grazing lands is one of the important sources of greenhouse gas emissions in many parts of the tropics. The objective of this study was to analyze the extent of soil organic carbon (SOC) loss from the conversion of native forests to pasturelands in Mexico. We analyzed 66 sets of published research data with simultaneous measurements of soil organic carbon stocks between native forests and pasturelands in Mexico. We used a generalized linear mixed effect model to evaluate the effect of land use change (forest versus pasture), soil depth, and original native forest types. The model showed that there was a significant reduction in SOC stocks due to the conversion of native forests to pasturelands. The median loss of SOC ranged from 31.6% to 52.0% depending upon the soil depth. The highest loss was observed in tropical mangrove forests followed by highland tropical forests and humid tropical forests. Higher loss was detected in upper soil horizon (0–30 cm) compared to deeper horizons. The emissions of CO2 from SOC loss ranged from 46.7 to 165.5 Mg CO2 eq. ha-¹ depending upon the type of original native forests. In this paper, we also discuss the effect that agroforestry practices such as silvopastoral arrangements and other management practices like rotational grazing, soil erosion control, and soil nutrient management can have in enhancing SOC stocks in tropical grasslands. The results on the degree of carbon loss can have strong implications in adopting appropriate management decisions that recover or retain carbon stocks in biomass and soils of tropical livestock production systems.