Anabel Aparecida de Mello,
Leif Nutto 
,
Karla Simone Weber,
Carlos Eduardo Sanquetta,
Jorge Luis Monteiro de Matos,
Gero Becker
Individual biomass and carbon equations for Mimosa scabrella Benth. (bracatinga) in southern Brazil
de Mello A. A., Nutto L., Weber K. S., Sanquetta C. E., Monteiro de Matos J. L., Becker G. (2012). Individual biomass and carbon equations for Mimosa scabrella Benth. (bracatinga) in southern Brazil. Silva Fennica vol. 46 no. 3 article id 44. https://doi.org/10.14214/sf.44
Abstract
Mimosa scabrella Benth. is an important native species of southern Brazil widely used for energy and promising for reforestation carbon offsets. Quantification of biomass and carbon stock is valuable for both purposes. From a forest inventory conducted in southern Brazil, data of M. scabrella were analyzed. Thirty sample trees were felled, excavated and weighed in the field and brought to laboratory for biomass and carbon determination. The total aboveground biomass represented 85% of the tree biomass, while roots corresponded to 15%. Correlation matrix of diameter at 1.3 m height (D), tree height (H) versus total and compartment biomass (P) indicated strong association between tree dimensions and biomasses. Five regression models were tested and equations were fitted to data of five biomass compartments and total tree biomass. The best fitting model for total biomass was P = –0.49361 + 0.034865 x D2H whereas for the partial biomass of the compartments was lnP = β0 + β1 x ln(D) + β2 lnH. Carbon concentration was statistically significantly different in foliage than in other compartments. Three approaches of calculating carbon stocks were evaluated and compared to actual data: 1) Estimated total biomass x weighted mean carbon concentration; 2) Estimated partial (compartment) biomass x compartment average carbon concentration; and 3) Carbon regression equations. No statistical difference was detected among them. It was concluded that biomass equations fitted in this study were accurate and useful for fuelwood and carbon estimations.
Keywords
carbon offsets;
forest inventory;
firewood;
modeling;
tree compartments
- de Mello, Federal University of Sergipe, Brazil E-mail aadm@nn.br
-
Nutto,
Federal University of Paraná, Brazil
E-mail
lnutto.ufpr@gmail.com
- Weber, Federal University of Paraná E-mail ksw@nn.br
- Sanquetta, Carlos Eduardo Sanquetta E-mail ces@nn.br
- Monteiro de Matos, Jorge Luis Monteiro de Matos E-mail jlmdm@nn.br
- Becker, University of Freiburg, Institute of Forest Utilization and Work Science, Germany E-mail gb@nn.de
Received 9 August 2010 Accepted 27 June 2012 Published 31 December 2012
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