Influência das propriedades físicas, química e biológica do solo na densidade arbórea de mangal em Inhangome e Ilha do Chuabo Dembe, Cidade de Quelimane - Moçambique

Abstract

Mangrove is an ecosystem of great complexity that occurs at the interface between marine and terrestrial environments, but which presents low species zoning richness due to the fact that they adapt to different conditions. The objective of this study was to determine the influence of organic (physical) and physical (soil bulk density, salinity and humidity) properties on mangrove tree density, the development of this ecosystem, it can be used in reforestation works as well as in response to weak reforestation projects of the same ecosystems. The study was carried out in two sites, the first one consists of several species of mangrove (Inhangome), and the second is made up of a single species (Chuabo Dembe Island). a transect perpendicular to the coastline with 6 plots totaling 4 transects with 12 plots, then the soil samples were removed in three different depths with 1 m depth on the diagonals of the vertices of each plot and finally counted the trees with DAP≥ 5cm. From the studied properties it was verified that the tree density was influenced by low soil pH (soil acidity), higher soil moisture (flooded soils), low apparent density (clayey soils identified at the base of the itervals of DA) and lower soil salinity, the one that less influenced was the organic material of the soil.