2012-2018年全球颗粒进口浓度分析

IF 0.6 4区 农林科学 Q4 FORESTRY
H. Soares, Á. N. Souza, E. S. Santos Júnior, A. Nunes, M. S. Joaquim, Luiz Moreira Coelho Junior
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引用次数: 1

摘要

随着化石燃料消费向可再生能源和清洁能源的转变,全球能源结构发生了转变,以能源为目的的森林生物质需求增加,特别是木质颗粒,近年来进口量有所增长。因此,本研究分析了2012年至2018年全球颗粒进口浓度。颗粒进口数据来源于联合国粮食及农业组织(FAO),采用浓度比[CR(k)]、Hirschman-Herfindal指数(HHI)、Theil熵指数(E)、基尼不平等系数(G)和Hall-Tideman指数(HTI)等指标衡量颗粒进口浓度。结果显示,全球颗粒进口量每年增长16.67%,从2012年的876万吨增长到2018年的2215万吨。CR(k)表明,各国的浓度非常高,次大陆的浓度也很高。HHI显示大陆和次大陆的集中度高,国家的集中度中等。熵和HTI证实了在HHI中发现的分析。G指出,所有地区的不平等程度都很高,并显示出截至2015年不平等程度有所下降的趋势。在研究的最后几年,浓度的降低与致密生物质能量转换的扩大和技术扩散有关,这使得这种燃料更便宜。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
ANALYSIS OF THE WORLDWIDE CONCENTRATION OF PELLET IMPORTS (2012-2018)
ABSTRACT Faced with the transition in the global energy structure with the shift in consumption of fossil fuels to renewable and clean sources, there has been an increase in the demand for forest biomass for energy purposes, especially wood pellets, and imports have grown in recent years. Therefore, this study analyzed the world concentration of pellet imports from 2012 to 2018. Data on pellet imports were obtained from the Food and Agriculture Organization of the United Nations (FAO), and the following indicators were used to measure the concentration: Concentration Ratio [CR(k)], Hirschman-Herfindal Index (HHI), Theil Entropy Index (E), Gini Inequality Coefficient (G) and the Hall-Tideman Index (HTI). The results showed a growth of 16.67% p.a. of global pellet imports, from 8.76 million tons (t) in 2012 to 22.15 million tons in 2018. The CR(k) indicated very high concentration for countries and high in the subcontinents. The HHI showed a high concentration for continents and subcontinents and a moderate concentration for countries. Entropy and HTI corroborated the analyzes found in the HHI. The G pointed out strong inequality for all territorial levels and showed trends towards a reduction in inequality as of 2015. The reduction in the concentration in the final years of study is related to the expansion and technological diffusion of energy conversion of the densified biomass, which makes this fuel more affordable.
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来源期刊
Revista Arvore
Revista Arvore FORESTRY-
CiteScore
1.00
自引率
0.00%
发文量
32
审稿时长
4-8 weeks
期刊介绍: A Revista Árvore é um veículo de comunicação científica da Sociedade de Investigações Florestais – SIF. O jornal é de acesso gratuito, revisado por pares, que publica bimestralmente trabalhos científicos originais no campo da Ciência Florestal. As áreas temáticas para publicação são: Ambiência e Conservação da Natureza, Manejo Florestal, Silvicultura e Tecnologia da Madeira e Utilização de Produtos Florestais. A política editorial visa manter alta conduta ética em relação à publicação e aos seus funcionários, rigor na qualidade dos artigos científicos, seleção de revisores qualificados, respeito profissional aos autores e processo de tomada de decisão imparcial. A Revista Árvore publica artigos apenas em inglês. Artigos de revisão podem ser publicados se houver uma discussão relevante resumindo o estado da arte sobre o assunto. A revisão estrita da literatura não é aceita.
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