Structural analysis of a fragmented area in Minas Gerais State, Brazil

被引：6
作者：
Salomao, Natalia, V [1 ]
Machado, Evandro L. M. [1 ]
Pereira, Rafaella S. [1 ]
Fernandes, Geraldo W. [2 ]
Gonzaga, Anne P. D. [1 ]
Mucida, Danielle P. [1 ]
Da Silva, Leovandes S. [1 ]
机构：
[1] Univ Fed Vales Jequitinhonha & Mucuri, Dept Engn Florestal, Rodovia MOT 367,Km 583,5000 Alto da Jacuba, BR-39100000 Diamantina, MG, Brazil
[2] Univ Fed Minas Gerais, Inst Ciencias Biol, Dept Ecol & Evolucao, Av Presidente Antonio Carlos 6627, BR-30161901 Belo Horizonte, MG, Brazil
来源：
ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS | 2018年 / 90卷 / 04期
关键词：
Landscape; ecology; tree; shrub; herb; metrics; FOREST;
D O I：
10.1590/0001-3765201820160828
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
The theory of landscape ecology applied to the methods of spatial analysis helps to understand changes in the structure of forest remnants. In view of this theory, the objective of the present study was to analyze the structure of a fragmented area between the years 1979 and 2015 through calculation of landscape metrics for arboreal, shrubby and herbaceous vegetation classes. Vegetation classes were classified with visits to the field, interpretation of aerial photographs from 1979 and supervised classification of Landsat 8 from 2015. The metrics calculated for each class were area and total number of fragments, total edge and average connectivity among the fragments. The analysis of structure found that it changed negatively due to an increase in the number of small fragments, which increased the intensity of edge effects and reduced connectivity between fragments for all classes.
引用
收藏
页码：3353 / 3361
页数：9
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