Abstract
The regularization of rural properties in the molds of the New Forest Code depends on the silvicultural study of the native species of the Brazilian biomes. The objective of this study was to evaluate the initial growth of five native tree species of the Atlantic Forest, with a view to their use in forest restoration projects. The following species were produced in the nursery, planted in the field, and evaluated for performance: Araucaria angustifolia, Mimosa scabrella, Trichilia claussenii, Schizolobium parahyba, and Cordia trichotoma. These species were distributed in two different areas, based on the randomized block experimental design. In experiment 1, the species A. angustifolia, M. scabrella, and C. trichotoma were distributed in three randomized blocks, each composed of 11 plants of each species. In experiment 2, the species A. angustifolia, M. scabrella, T. claussenii, and S. parahyba were distributed in three randomized blocks, each one composed of five plants of each species. In general, S. parahyba and M. scabrella showed faster development than the other species and, in this regard, are promising candidates for forest areas constitution or reconstitution in which there is interest in obtaining economic returns in less time. Araucaria angustifolia and T. claussenii showed relatively low development, whereas C. trichotoma showed intermediate development in relation to the other species studied. Despite their differences in performance, all species proved to be suitable for use in reforestation, mainly in the region where the study was developed.
Highlights
Brazil is known for being a country with continental characteristics, possessing a very rich biodiversity that is unparalleled in any other part of the globe
Experiment 1: Planting species in the full sun Through the analysis of variance, a significant effect of species was found (p < 0.05) for all the variables analyzed, with the best growth results observed for M. scabrella (Figure 2)
The growth results of M. scabrella obtained in this study indicate the potential of the species to compose plantations for forest restoration, as well as the potential for plantations of homogeneous stands of the species, since it showed an increase of approximately 220 cm and 14 mm in H and DC, respectively, in the first year of planting in full sun
Summary
Brazil is known for being a country with continental characteristics, possessing a very rich biodiversity that is unparalleled in any other part of the globe It is known as one of the largest producers of agricultural commodities in the world, having achieved this condition due to the demands of a growing world population, which currently stands at 7.5 billion people (POPULATION PYRAMID, 2019). In order to take advantage of the economic opportunity generated by the demand for food, agricultural production has been increasingly encouraged and intensified in recent years, which in turn has taken a considerable environmental toll in the country (GARCÍA-ORTH; MARTÍNEZ-RAMOS, 2011 ). This can be seen in the FLORESTA, Curitiba, PR, v. B. et al ISSN eletrônico 1982-4688 expansion of agricultural frontiers, which, year after year, have reduced the habitat of many native species and, in some cases, severely and irreversibly degraded some of the main phytoecological regions of the country (MESQUITA, 2018)
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