The losses in the Brazilian Cerrado raise the need to understand the border regions between human activities and Cerrado remnants. This work aims to answer the questions: How does the landscape change in a deforestation area in the Brazilian Cerrado, and where do the losses of native Cerrado occur in the landscape context? We chose the Cerrado of Bahia, an area of the agricultural frontier, and used landscape metrics, and land use and land cover data from 2013 and 2020, to quantify the changes in the landscape. We built a typology of landscape patterns to classify and characterize the Cerrado landscapes, based on the landscape metrics, and land use and land cover data from TerraClass Cerrado 2013. From these parameters, a decision tree classifier enabled the classification of the landscape types. Then, we used the yearly deforestation data from PRODES Cerrado to obtain the native cover and the landscape metrics for 2020. The predominant landscape in 2013 was the Intermediate Stage of Fragmentation (32.53%), followed by the Initial Stage of Fragmentation (31.26%), Consolidated Pasture (16.4%), Consolidated Agriculture (9.78%), Mixed Landscapes (5.59%) and Native Cerrado (4.70%). The continuous Cerrado borders on areas in an initial and intermediate stage of fragmentation, putting pressure on the native area. The losses in native cover do not occur in consolidated landscapes or inside the continuous Cerrado. Instead, there is a process of vegetation conversion over the landscapes in the initial and intermediate stages of fragmentation, and landscapes where the matrix is heterogeneous. These factors signal the need to preserve the contiguous fragments of Cerrado.

中文翻译：

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森林砍伐对塞拉多景观的影响：巴伊亚州边界的一项研究

巴西塞拉多的损失使人们需要了解人类活动和塞拉多残余之间的边界地区。这项工作旨在回答以下问题：巴西塞拉多森林砍伐区的景观如何变化，在景观环境下哪里会发生原生塞拉多的损失？我们选择了农业前沿地区巴伊亚州的塞拉多（Cerrado），并使用了景观指标以及2013年和2020年的土地利用和土地覆盖数据，以量化景观变化。我们基于景观指标以及TerraClass Cerrado 2013的土地利用和土地覆盖数据建立了景观格局分类学，以对Cerrado景观进行分类和表征。根据这些参数，决策树分类器可以对景观类型进行分类。然后，我们使用了PRODES Cerrado的年度毁林数据来获得2020年的原生植被和景观指标。2013年的主要景观是破碎的中间阶段（32.53％），其次是破碎的初始阶段（31.26％），已合并牧场（16.4％），综合农业（9.78％），混合景观（5.59％）和原生塞拉多（4.70％）。连续的Cerrado在破碎的初期和中期与区域接壤，这给原生区域带来了压力。在合并的景观或连续的Cerrado内部不会发生原生植被的损失。取而代之的是，在破碎的初始阶段和中间阶段，以及在矩阵不均一的景观上，存在着植被转化的过程。