FIRE EFFECTS ON NATURAL REGENERATION IN SEASONAL SEMIDECIDUOUS FOREST

IF 0.6 4区 农林科学 Q4 FORESTRY Revista Arvore Pub Date : 2022-01-01 DOI:10.1590/1806-908820220000014
Fábia Maria dos Santos Souza, V. B. Rodrigues, F. T. P. Torres
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Abstract

ABSTRACT Forest fire is considered a relevant environmental and ecological issue worldwide, as it causes population, ecosystem, and economic impacts, making monitoring and additional research necessary to understand post-fire forest recovery. Thus, the aim of this study was to evaluate the changes that occurred in the natural regeneration stratum in a fragment of Atlantic Forest in the municipality of Viçosa (MG), with and without the occurrence of fire. The phytosociological parameters and the functional diversity of the plant community were evaluated through 20 plots, 10 in the burnt area and 10 in the unburnt area, in 2018 and 2019, to follow the natural regeneration. There were collected, in the burnt and unburnt areas, respectively, 113 and 126 individuals, 23 and 16 species, and 13 and 9 botanical families. Piper sp.1, showed the highest values for the parameters: relative density, absolute frequency, and cover value, occurring in 100% of the plots. Areas with occurrence of fire present higher species richness. Species of the genus Piper occur frequently in areas of Semideciduous Seasonal Forest with signs of disturbance. The highest Shannon diversity and Pielou equitability indexes were found in the burnt area. The Jaccard index and the cluster analysis confirm the formation of groups with low similarity, showing floristic heterogeneity between the two areas, and the disturbance caused by fire is considered an important aspect for this floristic differentiation to occur. Therefore, the occurrence of forest fire in areas of Atlantic Forest increased the diversity values of species, with an increase in the equitability index, showing low floristic similarity between burnt and unburnt areas.
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火灾对季节性半落叶森林自然更新的影响
森林火灾在世界范围内被认为是一个相关的环境和生态问题,因为它会对人口、生态系统和经济产生影响,因此有必要进行监测和额外的研究,以了解森林火灾后的恢复。因此,本研究的目的是评估在发生火灾和没有发生火灾的情况下,维萨洛萨市(MG)大西洋森林片段中自然更新层发生的变化。在2018年和2019年,通过20个样地(10个烧毁区和10个未烧毁区)对植物群落的植物社会学参数和功能多样性进行了评估,以跟踪自然更新。在已烧和未烧地区分别采集到113和126株,23和16种,13科和9科植物。Piper sp.1的相对密度、绝对频率和覆盖值均达到最高值,在100%的样地出现。发生火灾的地区物种丰富度较高。胡椒属的物种经常出现在有干扰迹象的半落叶季节性森林地区。Shannon多样性指数和Pielou公平性指数均以毁林区最高。Jaccard指数和聚类分析证实了两区间存在低相似性类群,表明两区间的区系分化存在异质性,火灾干扰被认为是导致这种区系分化发生的重要因素。因此,大西洋林区森林火灾的发生增加了物种多样性值,公平性指数增加,燃烧区与未燃烧区区系相似性较低。
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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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