Effect of two management systems on an open ombrophilous forest, Maranhão state, Brazil

IF 0.5 4区农林科学 Q4 FORESTRY

Scientia Forestalis Pub Date : 2021-09-01 DOI:10.18671/SCIFOR.V49N131.14

D. D. S. Vieira, Karla Mayara Almada Gomes, Lizandra Elizeário dos Santos, Axa Figueiredo, B. O. Lafetá, M. Oliveira, J. Gama

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引用次数: 1

Abstract

Scientia Forestalis , 49 (131), e3617. https://doi.org/10.18671/scifor.v49n131.14 Abstract The objective of this study was to evaluate the floristic composition, diversity and structure of an Open Ombrophilous Forest, before and after harvesting, using the forest management systems in alternate strips (SAS) and the selective system (SS). The study was conducted at the Forest Management Unit of the MAGELA project, located in the municipality of Codó, state of Maranhão. The data were collected in six permanent plots of 50 m x 200 m located in the Annual Production Units (APU) 1 and 2, in which all trees with a diameter at 1.30 m from the ground (DBH) greater than or equal to 15 cm were measured, while trees with 5 cm < DBH <15 cm were measured in rectangular subplots of 5 m x 50 m. Data were collected on two occasions, namely: before (2001) and after (2004) the harvest. Species’ richness and diversity recovered, and even increased, after the application of the SAS and SS systems, but there were changes in species composition, as many new species were registered, while others were extinct. The community structure was extremely affected by the systems, as there were major changes in the ranking of the most ecologically important species. In the short term, the volume of SAS, after exploration, was greater than that registered for the SS, indicating that, probably, the APU submitted to the SS will

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两种管理制度对巴西maranh州开放伞形林的影响

林业科学，49 (131)，e3617。摘要本研究采用交替林带(SAS)和选择性林带(SS)两种林带管理制度，对阔叶林采伐前后的区系组成、多样性和结构进行了评价。这项研究是在马兰赫奥州Codó市MAGELA项目的森林管理股进行的。数据采集于位于APU 1和APU 2的6个50 m × 200 m的永久样地，其中测量了距地直径1.30 m (DBH)大于或等于15 cm的所有树木，而5 cm < DBH <15 cm的树木则测量了5 m × 50 m的矩形子样地。数据分两次收集，分别是收获前(2001年)和收获后(2004年)。应用SAS和SS系统后，物种的丰富度和多样性有所恢复，甚至有所增加，但物种组成发生了变化，新登记的物种较多，而灭绝的物种较多。群落结构受系统影响较大，生态重要性物种的排序发生较大变化。在短期内，经过勘探，SAS的体积大于SS登记的体积，这表明APU很可能是提交给SS的

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来源期刊

Scientia Forestalis Agricultural and Biological Sciences-Forestry

CiteScore

1.00

自引率

0.00%

发文量

期刊介绍： Scientia Forestalis is a scientific publication of the IPEF – Institute of Forest Research and Studies, founded in 1968, as a nonprofit institution, in agreement with the LCF – Department of Forest Sciences of the ESALQ – Luiz de Queiroz College of Agriculture of the USP – São Paulo University. Scientia Forestalis, affiliated to the ABEC – Brazilian Association of Scientific Publishers, publishes four issues per year of original papers related to the several fields of the Forest Sciences. The Editorial Board is composed by the Editor, the Scientific Editors (evaluating the manuscript), and the Associated Editors (helping on the decision of acceptation or not of the manuscript, analyzed by the Peer-Reviewers.