巴西塞拉多地区在米纳斯吉拉斯州北部是如何随时间推移发生变化的?空间分析与预测

Vicente Paulo Santana Neto, Reginaldo Arthur Glória Marcelino, Emanuelly Canabrava Magalhães, P. A. Coelho, A. F. Guimarães, Fausto Weimar Acerbi Júnior, A. S. Lorenzon
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引用次数: 0

摘要

森林砍伐是一个复杂的世界性问题,其主要原因是农耕活动的增加。尽管巴西塞拉多是世界上生物多样性最丰富的热带稀树草原,但这一生物群落正受到高森林砍伐率的威胁。本研究旨在评估巴西西南部地区米纳斯吉拉斯州圣弗朗西斯科市的森林砍伐情况,分析 2012 年至 2020 年期间土地植被的变化,重点关注森林、稀树草原和草地的自然特征,并预测 2030 年土地植被的变化。评估指标包括密度和面积、边缘、形状、核心区和邻近性。森林和热带稀树草原片段的面积(分别为 0.92% 和 12.60%)和核心面积都有所减少,其邻近度也有所增加。另一方面,草原地貌的总面积(12.72%)、核心面积以及与其他片段的距离都有所增加。总体而言,森林片段和热带草原片段趋于拉长和不规则。据预测,2030 年草地将增加,森林和稀树草原将减少。景观的这些变化可能会威胁到该地区的生物多样性,因此需要在公共政策上关注对破碎区域的保护。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
HOW THE BRAZILIAN CERRADO IS CHANGING OVERTIME IN NORTHERN MINAS GERAIS? SPATIAL ANALYSIS AND PREDICTION
Deforestation is a complex problem worldwide caused mostly by the increase in farming activities. Despite the Brazilian Cerrado being the most biodiverse savanna in the world, this biome is threatened by high deforestation rates. The present study aimed to evaluate deforestation in in São Francisco municipality – Minas Gerais state in Brazil's southwestern region, analyzing changes in land cover between 2012 and 2020 focusing on forest, savanna, and grassland physiognomies, and predicting changes in the land cover for the year 2030. It was evaluated metrics of density and size, edge, shape, core area, and proximity. The forest and savanna fragments suffered a reduction in area (0.92% and 12.60%, respectively) and core area, and also increased its proximity. On the other hand, the grassland physiognomy increased its total area (12.72%), nuclear area, and distance from the other fragments. In general, the forest fragment and savanna fragments tended to be elongated and irregular. For 2030, a scenario is predicted with increasing grassland and decreasing forest and savanna. Those changes in the landscape can threaten the region's biodiversity, so public policy attention is needed to the conservation of the fragmented areas.
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