Fragmentation patterns of forest and cerrado vegetation in northeastern Mato Grosso

被引:0
|
作者
Aveiro Cessa, Raphael Maia [1 ]
Cometti, Nilton Nelio [1 ]
do Amaral, Uira [2 ]
Rodrigues Silva, Felipe Gimenes [3 ]
机构
[1] Inst Fed Educ Ciencia & Tecnol Brasilia, Campus Planaltina, Brasilia, DF, Brazil
[2] Inst Fed Educ Ciencia & Tecnol Goiano, Campus Urutai, Goiania, Go, Brazil
[3] Inst Fed Educ Ciencia & Tecnol Mato Grosso, Campus Confresa, Cuiaba, MG, Brazil
关键词
Landscape ecology; Heterogeneous mosaic; Land use and coverage; LANDSCAPE ECOLOGY;
D O I
10.18406/2316-1817v14n120221684
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
This study sought to evaluate the fragmentation patterns of the forest and cerrado vegetation in the northeast of the state of Mato Grosso. The investigation used landscape metrics after extracting those fragments from the shapefile of soil use and occupation of the state of Mato Grosso and their application on the file of a negative buffer of 50.00. Forest and cerrado fragments were grouped into size classes in hectares. The quantified and specialized landscape metrics were area (mean perimeter/area ratio, core areas index, edge density), shape (mean shape indicator) and proximity (distance from the nearest neighbor in meters and the proximity index). The northeast of the state of Mato Grosso is occupied by 34.81% and 27.22% of the forest and cerrado fragments, respectively. The sum of the areas of the larger area size classes (classes >10,000 to 30,000 ha and >30,000 ha) is higher for forest fragments, which is indicative of the more expressive presence of the Amazon biome in that region and evidence of a more significant anthropic pressure on the fragmentation of the cerrado. In the northeast of the state of Mato Grosso, larger areas of forest and cerrado fragments are more protected than the smaller areas, as they have a smaller internal/external area ratio, higher percentage of central area, and less participatory border in relation to the total area.
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页数:11
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