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<p>The integrity of native vegetation remnants in fragmented landscapes depends on various factors. The land use and surrounding landscape characteristics are expected to have a substantial impact. However, a comprehensive understanding of the role of productive activities and rural property characteristics to integrity of forest remnants in the Amazon region remains limited. This study assessed whether land-use types and three other specific rural properties influence forest integrity in the Guamá microregion, northeastern Pará. Data on permanent crops and forests were integrated into annual land use and land cover mapping from the MapBiomas Brazil Project. Three variables were used as proxies for forest integrity: the Normalized Difference Infrared Index (NDII), vegetation height, and aboveground biomass, derived from Global Ecosystem Dynamics Investigation (GEDI) data. We analyzed seven predictors: property size (log_TPR), proportion of agriculture (AGRI_PR), native vegetation area (FOR), proportion of native vegetation (FOR_PR), forest percentage in the landscape (%FP), fire frequency (FIRE), and fragment age (IVEG). Four predictors (FOR_PR, FIRE, IVEG, and log_TPR) explained 10% of the variation in aboveground biomass (r<sup>2</sup> = 0.10; <i>p</i> &lt; 0.05). All predictors accounted for 28% of the variation in the vegetation height (r<sup>2</sup> = 0.28; <i>p</i> &lt; 0.05). For the NDII, all predictors were significant, explaining 13% of the variation (r<sup>2</sup> = 0.13; <i>p</i> &lt; 0.05). These results highlight the importance of understanding land use and rural property characteristics to conserve Amazonian forest remnants and support sustainable management and policy development in the Eastern Amazon.</p>

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The role of land use and rural property characteristics to forest integrity in a fragmented landscape in the eastern amazon

  • 期刊论文

  • 发表日期：

    2025年7月25日

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  • Jéssica Costa da Silva,
  • Hellen Kezia Almada,
  • Eduardo Queiroz Marques,
  • Fabiano Emmert,
  • Divino Vicente Silvério

摘要

The integrity of native vegetation remnants in fragmented landscapes depends on various factors. The land use and surrounding landscape characteristics are expected to have a substantial impact. However, a comprehensive understanding of the role of productive activities and rural property characteristics to integrity of forest remnants in the Amazon region remains limited. This study assessed whether land-use types and three other specific rural properties influence forest integrity in the Guamá microregion, northeastern Pará. Data on permanent crops and forests were integrated into annual land use and land cover mapping from the MapBiomas Brazil Project. Three variables were used as proxies for forest integrity: the Normalized Difference Infrared Index (NDII), vegetation height, and aboveground biomass, derived from Global Ecosystem Dynamics Investigation (GEDI) data. We analyzed seven predictors: property size (log_TPR), proportion of agriculture (AGRI_PR), native vegetation area (FOR), proportion of native vegetation (FOR_PR), forest percentage in the landscape (%FP), fire frequency (FIRE), and fragment age (IVEG). Four predictors (FOR_PR, FIRE, IVEG, and log_TPR) explained 10% of the variation in aboveground biomass (r2 = 0.10; p < 0.05). All predictors accounted for 28% of the variation in the vegetation height (r2 = 0.28; p < 0.05). For the NDII, all predictors were significant, explaining 13% of the variation (r2 = 0.13; p < 0.05). These results highlight the importance of understanding land use and rural property characteristics to conserve Amazonian forest remnants and support sustainable management and policy development in the Eastern Amazon.