Almacenamiento de carbono del suelo en sistemas agroproductivos como alternativa sostenible para la agricultura en Zamora Chinchipe

Abstract

Abstract: This study evaluated soil carbon storage in different agricultural production systems in the province of Zamora Chinchipe, Ecuador, with the aim of identifying sustainable alternatives for local agriculture. Soils under forest cover, grassland, cocoa (monoculture and agroforestry), agroforestry coffee, and silvopastoral systems were analyzed, measuring bulk density, pH, and carbon stocks in the 0-20 cm layer. The results revealed that silvopastoral and agroforestry coffee systems had the highest carbon stocks, with no significant differences between them, significantly exceeding cocoa and grassland systems. These systems also showed lower bulk density and less acidic pH, indicating better physical and chemical soil conditions. It is concluded that the intentional integration of trees into production systems not only improves soil properties but is also the most effective strategy for increasing carbon sequestration, promoting resilient and climate-smart agriculture in the Ecuadorian Amazon. This study provides local quantitative evidence to support agricultural policies and sustainable management practices in the province.