RESUMOO presente trabalho teve como objetivo avaliar, identificar e quantificar os 15 principais gêneros e espécies florestais exploradas legalmente no estado do Acre, na Amazônia brasileira, bem como analisar o número de autorizações emitidas para exploração de florestas manejadas, o volume de madeira e a área de manejo licenciada pelo
Este estudo teve como objetivo diagnosticar a quantidade e a procedência da madeira serrada comercializada na cidade de Florianópolis, em Santa Catarina. Foi realizado o levantamento de informações junto aos estabelecimentos de venda de madeira serrada no município, obtendo-se dados referentes à procedência da madeira serrada comercializada, o volume e as principais espécies exóticas e nativas existentes no mercado, além da distância média dos principais fornecedores até o mercado consumidor de Florianópolis. Os resultados permitem estimar um consumo total anual de aproximadamente 12.030m 3 de madeira serrada, sendo 5.532 m 3 de espécies nativas e 6.498 m 3 de espécies exóticas (Pinus spp. e Eucalyptus spp.). O maior percentual (63,5%) da madeira serrada de espécies exóticas (Pinus spp. e Eucalyptus spp.) comercializada no mercado madeireiro de Florianópolis é proveniente da mesorregião Sul Catarinense, sendo os municípios de Tubarão e São Martinho os principais fornecedores, respondendo por 21% e 13%, respectivamente. Observou-se ainda que a distância média entre a capital catarinense e os municípios fornecedores de espécies exóticas é de 126 km. Palavras-chave: Abastecimento de madeira; distância de transporte; comercialização de madeira. Florianópolis, Santa Catarina, Brazil. This study aimed at understanding the logistic of the supply of lumber commercialized in the municipality of Florianópolis in Santa Catarina State. We used interviews with managers of lumber supply stores to gather data on the origin of the lumber, the volume and major tropical species commercialized, and the average distance from suppliers to the stores. The results allowed to estimate a total annual consumption of about 12,030m 3 of lumber, of which 5,532 m 3 are lumber of tropical species and 6498 m 3 of exotic species (pine and eucalyptus). The highest percentage of exotic species of lumber sold in the timber market of Florianópolis is from the southern region of Santa Catarina State, mainly from the municipalities of São Martinho and Tubarão. The average distance between Florianópolis and the suppliers cities is about 126 km.
Abstract
Characterization of the supply of lumber commercialized in
The assessment of the conservation status of urban forest remnants is essential for sustaining tree diversity in metropolitan cities. This study evaluated the composition and structure of forest remnants in four urban parks within the natural distribution of Montane Mixed Ombrophilous Forest in Curitiba (PR, Brazil). We allocated 66 plots of 100 m2 and recorded all trees with perimeters at breast height ≥ 15 cm. A total of 1256 individuals from 44 botanical families and 117 tree species were identified, of which three are alien species. Tree density ranged from 1670 to 2095 trees ha−1, while the density of standing dead trees varied between 90 and 188 trees ha−1. We experienced values for the Shannon diversity index between 3.00 and 3.52 nats ind−1, which are comparable to the values for other non-urban forest remnants. Non-pioneer species represented 84.6% of the tree community (99 spp.), and 76% were zoochoric species (89 spp.). The research findings feed the discussion on the need of specific and integrated measures for the management of the urban parks reserved to the conservation of tree diversity in a specific phytoecological formation, while considering aspects of climate change and historical anthropisation.
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