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Universidade Federal Rural de Pernambuco (2009)

Estudo de duas áreas de vegetação da caatinga com diferentes históricos de uso no Agreste Pernambucano.

Oliveira Silva Shirley de

Titre : Estudo de duas áreas de vegetação da caatinga com diferentes históricos de uso no Agreste Pernambucano.

Study of two areas of vegetation caatinga with different descriptions of use in Agreste (Wasteland) Pernambucano, Brazil

Auteur : de Oliveira Silva Shirley

Université de soutenance : Universidade Federal Rural de Pernambuco

Grade : Mestre 2009

Résumé
The caatinga Bioma has a strategical importance, relate d to plants and animals biodiversity’s conservation. Know ing it better constitutes one of the biggest challenges in the Brazilian scien tific knowledge. Th is Paper objectives the analyzes of two ar eas of caatinga ve getation with different use descriptions in the Bento do Una city, Pernambuco’s Wasteland. This research was done in the Experimental Station of Bento do Una, observing two areas : Area l, with native bush, without historical evidences of deforestation to serve agricultural goals. Area ll which was previously fulf illed with palm forrageira plantation and was abandoned about 30 years ago and it is in the secondary succession. To collect data of the mature vegetation, had been used a total of 24 permanent parcels, measuring 20 X 20 m, being 12 parcels in ea ch area for evaluations’ accomplishment of the stru ctural and floristic parameters. In the regeneration study, each sample area of 20 X 20 m wa s implanted a parcel in the center of 5 X 5 m. All the individuals with circum ference equals to the height of chest (1,30 m height fr om ground) CAP ≥ 6 cm were consider ed adult, and for the recoverable individuals, ad opted the level of inclusion height equal or higher one meter and CAP ≤ 6. The height was esteem with the aid of a 2 meters numbered ruler. The ar bustivo-arbórea plants of the two areas were represented by 39 specie s, 30 sorts and 21 fam ilies. In the total 2,913 individuals, being 1,853 in area l and 957 in the area had been measured ll. In the structural survey of the recovera ble individuals in this two areas, 14 botanical families had been identified to 581 pertaining plants , 26 sorts and 30 species

Mots Clés : Semi-árido ; Ciências Florestais ; São Bento do Uma (PE) ; Fitossociologia ; Caatinga

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Page publiée le 24 décembre 2011, mise à jour le 17 septembre 2018