Relaciones entre parámetros químicos del suelo y grupos funcionales de plantas en islas de fertilidad del Chaco Árido (Argentina)
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Las “islas de fertilidad” son el resultado de la acumulación de partículas de suelo, agua, nutrientes y biomasa bajo su canopia. El estudio de parámetros de suelo y de vegetación en islas de fertilidad es importante para la redefinición de estrategias de manejo. La hipótesis es que las islas de fertilidad de Neltuma flexuosa y Larrea divaricata en el Chaco Árido mejoran las propiedades químicas del suelo bajo su canopia afectando la calidad y cantidad de forraje. El objetivo es evaluar las propiedades químicas del suelo sobre la respuesta de las plantas en islas de fertilidad. Se estudió la influencia de plantas nodrizas sobre propiedades químicas del suelo y su relación con grupos funcionales de plantas. La capacidad de carga ganadera (LCC) se incrementó significativamente bajo la canopia de N. flexuosa. Las especies decrecientes se relacionaron positivamente bajo canopia de N. flexuosa, y negativamente bajo L. divaricata. El carbono orgánico del suelo (OC) se relacionó positivamente con las especies decrecientes en islas de N. flexuosa, pero negativamente en las islas de L. divaricata donde aparentemente ocurre alelopatía. El fósforo extractable se correlacionó positivamente con las especies decrecientes.
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