Serra do Divisor National Park: a protected area under threat in the south-western Brazilian Amazon

IF 2.2 3区 环境科学与生态学 Q2 BIODIVERSITY CONSERVATION
Diogo Mitsuru Koga, I. Brown, P. Fearnside, D. S. Salisbury, S. Silva
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引用次数: 5

Abstract

Summary Protected areas have numerous roles (such as biodiversity preservation, the development of scientific research and the sustainable use of natural resources), but they are under threat from political and economic forces. The 837 000-ha Serra do Divisor National Park (SDNP) in the south-western Brazilian Amazon combines the conservation of natural resources and the maintenance of the productive activities of c. 400 resident families. The Brazilian and Peruvian governments have proposed a road linking Acre (Brazil) to Ucayali (Peru) that would bisect the SDNP. Another threat to the SDNP is a bill proposing its downgrading to an ‘environmental protection area’. This study aims to map the land cover of the SDNP and its surroundings from 1988 to 2018 and to analyse the dynamics of land-use change. Analysis of Landsat satellite images with supervised classification using the MaxVer algorithm show that, during the 30-year period, pasture showed the highest absolute land-cover gain, with 1986 ha in the interior and 7661 ha along the periphery of the SDNP. Only 1% of the park’s primary forest was lost by 2018, but the proposed road and potential downgrading may result in accelerated deforestation and forest degradation in the near future.
Serra do Divisor国家公园:位于巴西亚马逊西南部的一个受到威胁的保护区
保护区具有多种作用(如生物多样性保护、科学研究的发展和自然资源的可持续利用),但它们受到政治和经济力量的威胁。位于巴西亚马逊西南部的Serra do Divisor国家公园占地83.7万公顷,它既保护了自然资源,又维持了约400个居民家庭的生产活动。巴西和秘鲁政府提议修建一条连接阿克里(巴西)和乌卡亚利(秘鲁)的公路,这条公路将把民主党一分为二。社民党面临的另一个威胁是一项提议将其降级为“环境保护区”的法案。本研究旨在绘制1988年至2018年sdp及其周边地区的土地覆盖图,并分析土地利用变化的动态。利用MaxVer算法对Landsat卫星图像进行监督分类分析,结果表明:30年期间,草地的土地覆盖绝对增益最高,其中草地在内陆地区为1986 ha,在外围地区为7661 ha;到2018年,公园里只有1%的原始森林消失了,但拟建的道路和潜在的退化可能会在不久的将来加速森林砍伐和森林退化。
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来源期刊
Environmental Conservation
Environmental Conservation 环境科学-环境科学
CiteScore
5.20
自引率
3.70%
发文量
43
审稿时长
>36 weeks
期刊介绍: Environmental Conservation is one of the longest-standing, most highly-cited of the interdisciplinary environmental science journals. It includes research papers, reports, comments, subject reviews, and book reviews addressing environmental policy, practice, and natural and social science of environmental concern at the global level, informed by rigorous local level case studies. The journal"s scope is very broad, including issues in human institutions, ecosystem change, resource utilisation, terrestrial biomes, aquatic systems, and coastal and land use management. Environmental Conservation is essential reading for all environmentalists, managers, consultants, agency workers and scientists wishing to keep abreast of current developments in environmental science.
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