Estoque e retenção hídrica da serrapilheira acumulada em plantios homogêneos de Mimosa tenuiflora (Willd) Poiret)

• Autor(a) principal: Macedo, Thatiane Alves de
• Data de Publicação: 2022
• Outros Autores: Monteiro, Iziane Miranda, Braga, Rodolpho Stephan Santos, Santana, José Augusto da Silva, Canto, Juliana Lorensi do
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Diversitas Journal
• Texto Completo: https://diversitasjournal.com.br/diversitas_journal/article/view/2355
• topic: Silvicultura; ciclagem de nutriente; jurema preta; serrapilheira; cobertura morta; Forestry, nutrient cycling, jurema-preta.

The accumulated litter is one of the bioindicators of programs for the recovery of degraded areas due to its importance in the biogeochemical cycle of forest ecosystems. Thus, this study aimed to evaluate the stock and water retention capacity of litter accumulated in six-year-old homogeneous plantations of Mimosa tenuiflora and different spacings (2 m x 2 m and 3 m x 3 m) in the municipality of Macaíba, RN. In each planting, 10 samples of the litter layer accumulated on the soil were collected through a metallic frame (template). The samples were separated into leaf and branch fractions, dried in an oven until constant mass and weighed on a precision balance to determine the stock. The water holding capacity of the litter was determined by the Blow Method. The average litter stock accumulated was 7,435.67 kg ha-1 for the smallest spacing and 7,943.11 kg ha-1 for the largest, with no statistical difference between the means. The leaf fraction constituted the largest proportion of accumulated litter. The water holding capacity was similar between the plantations, being 143.9% for the most dense and 143.1% for the other. The results reflect the potential of the species for the recovery of degraded areas in the region.