Nothofagus alessandrii forests in the Mediterranean region of Chile face significant threats from deforestation, fragmentation, wildfires, and climate change. This study investigated the temporal and spatial dynamics of N. alessandrii populations and their implications for habitat fragmentation and connectivity. Using remote sensing data and geographic information system analysis, we assessed deforestation patterns, fragmentation metrics, and connectivity indices for different scenarios between 2009 and 2022. A reduction in the N. alessandrii forest area, extensive fragmentation, and decreased connectivity were observed over time, with wildfires exacerbating these trends. Reforestation simulations showed the potential of targeted restoration efforts to improve connectivity, especially when focusing on proximate patches. However, careful consideration of seed dispersal distances and wildfire risk is essential for effective reforestation planning. Overall, our findings underscore the urgent need for conservation interventions to preserve N. alessandrii forests and their biodiversity in Chile's coastal mountain ecosystems. A proactive and collaborative approach is essential to ensure the survival of these forests for future generations.

中文翻译：

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更新 Nothofagus alessandrii 的分布：森林砍伐、破碎化和连通性的影响


智利地中海地区的 Nothofagus alessandrii 森林面临森林砍伐、破碎化、野火和气候变化的重大威胁。本研究调查了 N. alessandrii 种群的时空动态及其对栖息地破碎化和连通性的影响。利用遥感数据和地理信息系统分析，我们评估了 2009 年至 2022 年不同情景下的森林砍伐模式、破碎化指标和连通性指数。随着时间的推移，观察到 N. alessandrii 森林面积减少、大面积破碎化和连通性降低，野火加剧了这些趋势。重新造林模拟显示了有针对性的恢复工作在改善连通性方面的潜力，尤其是在关注邻近斑块时。然而，仔细考虑种子传播距离和野火风险对于有效的重新造林计划至关重要。总体而言，我们的研究结果强调了迫切需要采取保护干预措施，以保护智利沿海山地生态系统中的 N. alessandrii 森林及其生物多样性。积极主动的协作方法对于确保这些森林为子孙后代生存至关重要。