ESTRUTURA E PADRÃO ESPACIAL DA VEGETAÇÃO EM UMA ÁREA DE CAATINGA

Autor:	David Fagner de Souza e Lira, Gabrielle Hambrecht Loureiro, José Antônio Aleixo da Silva, Emanuel Araújo Silva, Rinaldo Luiz Caraciollo Ferreira, Gabriel Paes Marangon
Rok vydání:	2013
Předmět:	Ecology biology Manihot Euphorbiaceae Forestry Fabaceae biology.organism_classification Croton Basal area Horticulture Geography Genus Tree species Nature and Landscape Conservation Myracrodruon urundeuva
Zdroj:	FLORESTA. 43:83
ISSN:	1982-4688 0015-3826
DOI:	10.5380/rf.v43i1.27807
Popis:	A vegetacao do Nordeste revela carencia relacionada ao manejo florestal da Caatinga. Objetivou-se estudar o padrao espacial de especies e estrutura da vegetacao em area de Caatinga, localizada no municipio de Floresta, PE. Em uma area de aproximadamente 10 ha, com historico de perturbacao, foram instaladas 20 parcelas de 20 x 20 m, de forma sistematica. Todas as arvores com CAP a 1,30 m do solo ≥ 6 cm foram identificadas e tiveram suas circunferencias e alturas mensuradas. Foram encontradas 18 especies arboreas, distribuidas em 15 generos, dentro de 6 familias botânicas, com indice de diversidade de Shannon (H') de 2,11 nats.ind-1, e area basal total estimada de 4,53 m2.ha-1. Destacaram-se as familias Fabaceae, com 48,93% dos individuos, e Euphorbiaceae, com 41,28%. As especies Poincianella bracteosa (Tul.) L. P. Queiroz, Croton rhamnifolius Kunth, Manihot cartaginenses subsp. glaziovii (Muell. Arg.) Allem. e Mimosa ophtalmocentra Mart. ex Benth somaram 55% do total do valor de importância. A maioria das especies apresentou distribuicao agregada, exceto algumas, como Myracrodruon urundeuva Fr. Allem. para o indice de McGuinnes (IGA), Commiphora leptophloeos (Mart.) J. B. Gillett para McGuinnes (IGA) e Payandeh (Pi) e Manihot cartaginenses subsp. glaziovii (Muell. Arg.) Allem. para Fracker e Brischle (Ki), que obtiveram tendencia ao agrupamento. Palavras-chave: Semiarido; Pernambuco; distribuicao espacial. Abstract Structure and spatial pattern of vegetation in a caatinga area. Forest management deficiency in relation to Northeast vegetation, specifically caatinga, are remarkable. This research aims to analyze spatial patterns of species and vegetation structure in Caatinga area, located in the municipality of Floresta-PE. In an area of approximately 10 ha, and a history of disturbance, 20 plots (20 x 20 m) were installed in systematic way. All trees with CAP (at 1.30 m above the ground) ≥ 6 cm had been identified, and their circumferences and heights measured. 18 tree species were sampled, distributed in 15 genus, within 6 botanical families, with diversity index of Shannon (H ') of 2.11 nats / ind, and estimated total basal area of 4, 53 m2.ha-1. The highlighted families were Fabaceae, 48.93% of individuals, and Euphorbiaceae 41.28%. The species Poincianella bracteosa (Tul.) L.P.Queiroz, Croton rhamnifolius Kunth, Manihot cartaginenses Subsp. glaziovii (Muell. Arg.) Allem., and Mimosa ophtalmocentra Mart. ex Benth totalized 55% of the total value of importance. Most species revealed aggregated distribution, except some like Myracrodruon urundeuva Fr. Allem. for the McGuinness index (IGA), Commiphora leptophloeos (Mart.) J.B.Gillett for McGuinness (IGA) and Payandeh (Pi), and Manihot cartaginenses Subsp. glaziovii (Muell. Arg.) Allem. for Fracker and Brischle (Ki), which obtained grouping tendency. Keywords: Semiarid; Pernambuco; spatial distribution.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::98a7b48290fe36cea726c844ab251e81 https://doi.org/10.5380/rf.v43i1.27807 Zobrazit plný text záznamu