Author(s): SALIS, S. M.; ASSIS, A. M.; MATTOS, P. P. de; PIÃO, C. S. A.

Summary: The quantity and distribution of vegetal biomass ar important aspects to consider in ecosystem studies. However, little information is available about Brazil's Pantanal woodland savannas. Thes work involved the development of regression equations of the aerial biomass and wood volume of native tree species in a region of woodland savanna on Rio Negro farm in the Pantanal of Nhecolandia, Brazil. Samples were taken from 10 trees of each of five species: Protium heptaphyllum (Aubl.) Marchand, Magonia pubescens A.St.-Hil., Diptychandra aurantiaca Tul., Terminalia argentea Mart. and Zucc. and Licania minutiflora (Sagot) Fritsch and from a miscellaneous group of 11 different species. Linear and nonlinear regression analyses were developed relating the diameter at breast height to the dry weighty of wood, branches and leaves, wood volume and total aerial biomass. All the regressions showed a significance of P< 0.05 and an R2 close to or above 0.8. The biomass curve predicted by linear regression analysis of the studied species wass similar to the monlinear regression, with exception of L. minutiflora and the miscellaneous group. The breast height diameter proved a good choice for estimating biomass and wood volume. The estimated wood volume and biomass of the Pantanal woodland savanna is crucial information for understanding the carbon cycle and for ensuring the region's conservation and sustainable use.

Publication year: 2006

Types of publication: Journal article

Unit: Embrapa Pantanal

Keywords: Análise de regressão, Biomass, Biomassa, Brasil, Diptychandra aurantiaca, Licania minutiflora, Madeira, Magonia pubescens, Pantanal, Protium Heptaphyllum, Regression analysis, Terminalia argentea, Wood volume