Aporte de serapilheira em reflorestamento misto

Abstract

Monitoring actions are necessary for the evaluation of indicators that reveal the evolution of ecological restoration. The contribution of litter can be indicative of the sustainability of a planted forest or mixed reforestation with native species. This work aimed to evaluate the functionality of a reforestation in Laranjeiras, SE, using the contribution of litter as indicator. Reforestation was carried out in November 2005, using 31 native forest species. The contribution of litter was collected monthly, from September 2014 to August 2015.It was analyzed chemically (nitrogen (N), phosphorus (P) and potassium (K), transformed to nutrient content (kg ha ha-1). The annual contribution of litter was estimated at 3.85 Mg ha-1 year-1, with a monthly average of 0.33 Mg ha-1. The low contribution of litter may be due to the greater spacing and to 26 of the 31 species used for planting that are late secondary or climax, producing less litter. The contribution of litter presented a seasonal pattern (increased production at the beginning of the dry season and reduction in the rainy season).The annual contribution of nutrients, via litter, was: nitrogen (N)> potassium (K)> phosphorus (P).The litter contribution pattern in mixed reforestation is functionally similar to that of natural forest ecosystems of semideciduous seasonal forests.