科研之友
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摘要
the objective of this study was to describe the floristic composition and the structure of the tree layer of a fragment of a seasonal deciduous forest in northeastern goi芍s state, brazil. a sample of 25 (20x20) plots was assessed totaling one hectare. all individuals for 5cm dbh were included in the survey. a total of 663 trees in 52 arboreal species was found; the most abundant species were combretum duarteanum camb., casearia rupestris eichl., myracrodruon urundeuva fr. allem., machaerium acutifolium vog. and tabebuia impetiginosa (mart. ex dc.) standl. there were 21 families with a higher proportion of leguminosae (17 species) bignoniaceae (4 species), anacardiaceae (3 species) and bombacaceae (3 species). the forest presented an open canopy and an unbalanced diameter distribution, with liocourt%26apos;s quocient %26quot;q%26quot; values ranging from q1=0,66 to q6=0.14. these forest remnants play an important role in the maintenance of the biological diversity and contain valuable timber species that are becoming rare in the surrounding regions.
