Base de dados de espécies arbóreas ornamentais para o paisagismo urbano

Abstract

The urban arborization of Belém (PA) has about 81% of species unsuitable for this use, causing serious problems, especially for the electric power network. This work aims to contribute to the establishment of tree-planting standards adequate for the ecological requirements of the Amazon region through the selection of ornamental tree species suitable for urban use. A data base (DB) was created in MicroSoft Excel; a bibliographic survey of specialized literature was carried out to select the native ornamental tree species (especially Amazonian) indicated for the production of seedlings suitable for urban forestation; and, the creation of a protocol/matrix for the selection of dendrometric, ecological, phenological, and silvicultural characteristics of the selected ornamental tree species, containing 14 weighted parameters (height, crown, flowering, foliage, legal value, fruit use, growth, phytosanitary, leaf size, deciduousness, fruiting intensity, fruit weight, root, and longevity). A total of 423 ornamental tree species were recorded, of these 173 had botanical synonyms and 177 were weighted in the selection matrix/protocol, resulting in a range of 45 to 25 points, in the range 19-51 (minimum maximum allowed). Cenostigma tocantinum Ducke and Caesalpinia peltophoroides Benth. had the highest ranking (45 points), with Didymopanax morototonii (Aubl.) Dcne. et Planch (25 points) at the other extreme. Adenanthera pavonina, Saraca indica, Tabebuía nodosa, Tabebuia vellosoi and Erythrina crista-gallifor were the species of cultural and legal value recorded. From the ornamental tree seedlings produced at the Jacques Huber Botanical Garden (Research Campus of the Emílio Goeldi Museum of Pará-MPEG/MCT) there are 49 species recorded in the DB, and of these 12 are weighted in the selection matrix.