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首页> 外文期刊>Regional Environmental Change >Twenty years of land cover change in the southeastern Peruvian Amazon: implications for biodiversity conservation
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Twenty years of land cover change in the southeastern Peruvian Amazon: implications for biodiversity conservation

机译：秘鲁亚马逊东南部的20多年的土地覆盖变化：对生物多样性保护的影响

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The Amazonian ecosystems of Madre de Dios (MDD) region, considered Peru's "capital of biodiversity" due to its impressive species richness, are threatened by the rapid expansion of infrastructure. The paving of the Interoceanic Highway in 2010 has brought rapid population growth and environmental degradation, threatening large-scale conservation efforts such as the Vilcabamba-Amboro Conservation Corridor (VACC). To quantify the impacts of development processes and to identify critical areas where further conservation efforts should be focused, we analyzed 20 years of land use and land cover (LULC) dynamics, drivers, and fragmentation patterns in MDD. We mapped LULC in 1993, 2003, and 2013 using Landsat imagery and modeled the proximate drivers of change related to deforestation, forest regrowth, gold mining, agriculture, and urban expansion in two time periods (1993-2003 and 2003-2013). We characterized habitat fragmentation patterns in four regional target areas. Our results show accelerated deforestation triggered by the road network spreading, mining and agriculture expansion, and population growth. LULC changes produced two contrasting spatial landscape patterns: numerous small forest fragments in the north due to agricultural expansion along the Interoceanic Highway and large continuous forest losses caused by gold mining expansion in the south. Current unplanned development in this region is threatening its outstanding biodiversity. We suggest that further conservation efforts should focus on strengthening the legal framework of the VACC, implementing a sustainable management plan for MDD, promoting agroforestry strategies along the Interoceanic Highway, and preserving smaller corridors for animal movement.
机译：由于其令人印象深刻的物种，Madre de Dios（MDD）地区的亚马逊生态系统（MDD）地区（MDD）地区认为秘鲁的“生物多样性”，受到基础设施的快速扩张受到威胁的威胁。 2010年铺设了徒步旅行，带来了迅速的人口增长和环境退化，威胁大规模保护努力，如Vilcabamba-Amboro保护走廊（VIVC）。为了量化发展流程的影响，并确定应重点放大的进一步保护努力的关键领域，我们分析了20年的土地利用和土地覆盖（LULC）动态，司机和MDD碎片模式。我们在1993年，2003年和2013年映射了Lulc，使用Landsat Imagery，并建模了与森林砍伐，森林再生，金矿，农业和城市扩建有关的近似改变驱动因素（1993-2003和2003-2013）。我们在四个区域目标领域表征了栖息地碎片模式。我们的结果表明，通过道路网络传播，采矿和农业扩张以及人口增长引发的加速森林砍伐。 Lulc改变产生了两个对比的空间景观模式：由于沿着南方金矿扩张造成的农业扩张，北方的北方众多小森林碎片。该地区的当前意外发展威胁着其出色的生物多样性。我们建议，进一步的保护努力应侧重于加强VICC的法律框架，实施MDD的可持续管理计划，促进沿着民族公路促进农业遗产策略，并保留较小的动物运动走廊。

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