Revegetation of a degraded area at Sarandi creek, Planaltina, Distrito Federal, Brazil.
The floristic composition of gallery (riparian) forests is related to climatic and soil conditions and to the surrounding vegetation, and includes species both tolerant and non-tolerant to several levels of soil moisture. This study investigated the reclamation of a degraded area close to the Sarandi creek in Distrito Federal. The survival, size and diameter growth of 14 forest and 7 savanna (cerrado) species were evaluated over 52 months. Forest species with a survival rate above 96% were: Astronium fraxinifolium, Guazuma ulmifolia, Tapirira guianensis, Dilodendron bipinatum, Inga alba, Magonia pubescens, Pseudobombax longiflorum, Hymenaea stilbocarpa [H. courbaril] and Sterculia chicha [S. apetala]. The best height and diameter growth was by I. alba, T. guianensis and Enterolobium contortisiliquum. Among the savanna species, survival rates above 96% were shown by Machaerium acutifolium, Hymenaea stigonocarpa and Bowdichia virgilioides, and best height and diameter growth by M. acutifolium, Caryocar brasiliense and B. virgilioides. Survival and growth rates indicate that I. alba, T. guianensis, A. fraxinifolium, G. ulmifolia and D. bipinatum were suitable for gallery forest reclamation in this area. Climax species such as Talauma ovata and Metrodorea pubescens did not develop well, and are therefore not recommended to reclaim areas with the same conditions as the study area.