The Effects of Logging and Understory Fires on Biomass in Dense and Transitional Forests
Oswaldo
de
Carvalho Jr, IPAM - Instituto de Pesquisa Ambiental da Amazônia, oswaldo@ipam.org.br
(Presenting)
Ane
Alencar, IPAM - Instituto de Pesquisa Ambiental da Amazônia, ane@ipam.org.br
Daniel
Curtis
Nepstad, Woods Hole Research Center & IPAM - Instituto de Pesquisa Ambiental da Amazônia, dnepstad@whrc.org
Sanae
Hyashi, IPAM - Instituto de Pesquisa Ambiental da Amazônia, sanae@ipam.org.br
The Amazon forests are becoming more susceptible to fire events depending on the vegetation type, intensity of logging, fragmentation and annual climatic conditions variation. Logging and fire alter the composition and structure of forests by provoking tree mortality. Changes on the biomass of Amazon region forest represent an important component of the global carbon cycle. This study provides an estimate of live aboveground biomass for two sites of dense forest in Para state (Paragominas and Santarem) and one site of transitional forest in Mato Grosso state (Bom Jesus do Araguaia). Field data in forests ranging from intact to logged and logged & burned were collected in plots of 1 ha. Biomass decreased 29, 16 and 12% in logged forest and 67, 54 and 9% in logged and/or burned forest to Paragominas, Santarém and Mato Grosso, respectively. The small differences on biomass among sites located in transitional forest may be showing some adaptability of this biome to coexist with such events
Submetido por Oswaldo de Carvalho Jr em 24-MAR-2004
Tema Científico do LBA: CD (Armazenamento e Trocas de Carbono)