Avaliação de métodos de restauração florestal de Mata Atlântica de tabuleiros
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Data
2011-07-25
Autores
Klippel, Valéria Hollunder
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Universidade Federal do Espírito Santo
Resumo
This study aimed to evaluate different forest restoration methods of a Tableland Forest, by manipulating the floristic composition and silvicultural practices. With this foundation, it was installed in August of 2007, at the Reserva Natural Vale (RNV) in Linhares - ES, an experiment in randomized blocks with 4 treatments and 3 replications (a total of 12 plots): T1 (Control): Only leafcutter ants control; T2: Selective manual mowing, selective chemical weeding, control of ants and species tolerant to the herbicide; T3: Same as treatment 2, but with the planting of Atlantic Forest pioneer species in the spacing of 5 x 5 m, interspersed, in the same spacing, the seeding of Sesbania grandiflora in pits (10 seeds per pit); T4: Same as treatment 2, but with the planting of 54 Atlantic Forest species in the spacing close to 3 x 3 m. From the moment of installation (2007) until the third year of the study (2010) annual inventories were performed in all plots, to study the arboreal vegetation flora and growth. Moreover, at the third year after the experiment implementation, soil samples were also collected at four depths (0- 5, 5-10, 10-20 and 20-40 cm) for later chemical analysis; accumulated litter, for studying biomass and nutrient content and level, and leaf area index (LAI). Regarding the soil chemical attributes, only statistic differences were found for the studied treatments in depths of 0-5 cm, where the highest values of Ca, sum of bases and CEC were observed for the treatment 4 and greater Na Saturation Index value to the treatment 1, and 10-20 cm, where the treatment 4 showed higher Ca value. There were no statistical differences in the accumulated litter biomass. The lower C/N was obtained by the treatment 3. This treatment also had the highest leaf area index. The elimination of weed competition acted positively on trees growth. The entrance of individuals and basal area was higher for treatments 3 and 4.
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Tableland Atlantic Forest , Leaf area index , Accumulated litter , Soil chemical attributes , Pioneer species , Mata Atlântica de Tabuleiros , Índice de área foliar , Serapilheira acumulada , Atributos químicos do solo , Espécies pioneiras
Citação
KLIPPEL, Valéria Hollunder. Avaliação de métodos de restauração florestal de Mata Atlântica de tabuleiros. 2011. 74 f. Dissertação (Mestrado em Ciências Florestais) — Universidade Federal do Espírito Santo, Centro de Ciências Agrárias, Jerônimo Monteiro, 2011.