Abstract
ABSTRACT The aim of our study was to evaluate the dendrometric characteristics of Atlantic Forest trees of 21 years of deployment in the mountain region of Rio de Janeiro, Brazil and their influence on topsoil fertility. We evaluated the survival rates, total heights, and diameters at 1.30 m of all trees in the stand. The characterized soil chemical attributes were pH, P, K, Ca, Mg, Al, and organic matter at 0-0.1 m depth. The averages were compared by Student’s test (p<0.05). While Myroxylon peruiferum and Amburana cearensis had lower survival rates than the other species, Plathymenia reticulata had a larger diameter. All tree species showed diameter growth, though it was larger for Dalbergia nigra, Plathymenia reticulata, Schizolobium parahyba, Esenbeckia leiocarpa, and Lecythis Pisonis. All stands showed medium organic matter content, from 3.3 to 4.1%, and low P. The soils under the Dalbergia nigra and Plathymenia reticulata stands are the most acidic and with low Ca, Mg, and K levels. Our study demonstrated differences in growth patterns and that the species influenced the soil chemical characteristics differently.
Highlights
Brazil is a country that stands out in the forestry sector due to its climatic and soil conditions, the extensive areas available for planting, and its advanced technical achievement, which has rendered it the status of the world’s most productive country in terms of timber volume per unit area (Ibá, 2017)
In 2016, the total area of trees planted in Brazil was 7.84 million ha, of which 5.7 million were comprised of eucalyptus, 1.6 million of pine, and only 0.59 million ha with other species (Ibá, 2017)
The species are from the following families: Fabaceae
Summary
Brazil is a country that stands out in the forestry sector due to its climatic and soil conditions, the extensive areas available for planting, and its advanced technical achievement, which has rendered it the status of the world’s most productive country in terms of timber volume per unit area (Ibá, 2017). Forest exploitation has been restricted to a few species, especially exotic and widely studied ones. In 2016, the total area of trees planted in Brazil was 7.84 million ha, of which 5.7 million were comprised of eucalyptus, 1.6 million of pine, and only 0.59 million ha with other species (Ibá, 2017). To meet the demands of the timber sector without intervening in natural forests, it is fundamental to increase the efficiency and effectiveness of production, exploitation, conversion of raw materials, and, above all, the development of planted areas. The diversification of species and the increase in supply of reforestation wood is a market demand. Studies of timber and non-timber forest species potential production allow the expansion and diversification of products and stimulate the conservation of genetic materials eliminated by logging deforestation
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