Regional Concentration of The Gross Production Value of Firewood in Paraíba

Luiz Moreira Coelho Junior,Pablo Aurélio Lacerda De Almeida Pinto,Mariana De Castro Burgos,Edvaldo Pereira Santos Júnior

doi:10.1590/2179-8087.088717

Luiz Moreira Coelho Junior, Pablo Aurélio Lacerda De Almeida Pinto + Show 2 more

Open Access

https://doi.org/10.1590/2179-8087.088717

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Abstract

ABSTRACT This study analyzed the regional concentration of the gross production value (GPV) of firewood in Paraiba from 1994 to 2014. It measured the concentration by means of the Concentration Ratio [CR(k)] of the Herfindahl-Hirschman Index (HHI), Theil’s Entropy (E), the Hall-Tindelman Index (HTI), and the Gini Index (G). From the analyses performed, it was concluded that there was growth in the GPV of firewood in Paraiba from R$ 2.59 million to R$ 10.39 million (in current terms). The CR(4) and CR(8) of the municipalities indicated low concentration; the CR(4) in the microregions presented a moderately low concentration, and the CR(8) had moderately high concentration. The HHI of the municipalities and microregions has a competitive market, and the HHI of the mesoregions has moderate concentration; E corroborated the evidence of HHI; HTI presented low regional concentration; G showed medium to strong inequality for mesoregions, weak to medium in microregions and zero to weak in municipalities.

Highlights

Firewood is one of the oldest energy sources and has importance in the Brazilian energy matrix, where much of its production is transformed into charcoal for industrial and residential consumption
It measured the concentration by means of the Concentration Ratio [CR(k)] of the Herfindahl-Hirschman Index (HHI), Theil’s Entropy (E), the Hall-Tindelman Index (HTI), and the Gini Index (G)
The HHI of the municipalities and microregions has a competitive market, and the HHI of the mesoregions has moderate concentration; E corroborated the evidence of HHI; HTI presented low regional concentration; G showed medium to strong inequality for mesoregions, weak to medium in microregions and zero to weak in municipalities

Summary

Introduction

Firewood is one of the oldest energy sources and has importance in the Brazilian energy matrix, where much of its production is transformed into charcoal for industrial and residential consumption. In Brazil, the production of firewood reached 78.25 million m3 in 2016. Of this total, 68.11% of the firewood came from planted forests (silviculture) and 31.89% from native forest (wood extraction/logging). The main firewoodproducing regions for that year were the South (46.15%), the Northeast (21.27%) and the Southeast (16.80%). There is a discrepancy in proportion within these regions regarding origin; in the South and Southeast approximately 95% of the firewood supply is from silviculture, while in the Northeast, 92.35% of the firewood comes from wood extraction/logging. The gross production value (GPV) of firewood from Brazilian wood extraction/logging reached R$ 626.42 million, and the Northeast corresponded to 19.98% in the Caatinga biome (IBGE, 2017)

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