A 22 year assessment of deforestation and restoration in riparian forests in the eastern Brazilian Amazon
A 22 year assessment of deforestation and restoration in riparian forests in the eastern Brazilian Amazon
复制标题
对巴西亚马逊东部河岸森林砍伐和恢复的 22 年评估
DOI：
10.1017/s0376892914000356
复制
发表时间：
2014
影响因子：
2.7
通讯作者：
Carlos M Souza
中科院分区：
文献类型：
--
作者：
S. Nunes;J. Barlow;T. Gardner;João V. Siqueira;M. Sales;Carlos M Souza
摘要巴西环境法对私人土地所有者在河岸林区的土地使用变化施加了比在非河岸林区更多的限制，反映出对其对保护生物多样性和关键生态系统服务的重要性的认识。利用陆地卫星分类图像的22年时间序列，评估了过去20年来河岸永久保护区的森林砍伐和森林再生情况，重点是亚马逊东部帕拉州的帕拉市。没有证据表明河岸森林得到了比非河岸森林更有效的保护。相反，直到2010年，才发现河岸永久保护区内的森林砍伐率相对较高，这表明私人业主普遍未能遵守环境立法。没有证据表明河岸地带的重建水平更高，尽管根据法律，业主有义务恢复这些地区。一些因素限制了河岸森林保护和恢复方面的改进。这些问题包括对环境合规要求的认识有限，需要提高绘制河岸森林分布和范围以及私有财产边界的技术能力，以及更好地获得支持恢复项目所需的财政资源和技术能力。
SUMMARY Brazilian environmental law imposes more restrictions on land-use change by private landowners in riparian forests than in non-riparian forest areas, reflecting recognition of their importance for the conservation of biodiversity and key ecosystem services. A 22-year time series of classified Landsat images was used to evaluate deforestation and forest regeneration in riparian permanent preservation areas over the past two decades, focusing on the municipality of Paragominas in the state of Pará in eastern Amazonia. There was no evidence that riparian forests had been more effectively protected than non-riparian forests. Instead, deforestation was found to be comparatively higher inside riparian permanent preservation areas as recently as 2010, indicating a widespread failure of private property owners to comply with environmental legislation. There was no evidence for higher levels of regeneration in riparian zones, although property owners are obliged by law to restore such areas. A number of factors limit improvements in the protection and restoration of riparian forests. These include limited awareness of environmental compliance requirements, the need for improved technical capacity in mapping the distribution and extent of riparian forests and the boundaries of private properties, and improved access to the financial resources and technical capacity needed to support restoration projects.