• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Conservation Biology >Conservation of the Brazilian Cerrado
【24h】

Conservation of the Brazilian Cerrado

机译：巴西塞拉多保护区

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The Cerrado is one of the world's biodiversity hotspots. In the last,35 years, more than 50% of its approximately 2 million king has been transformed into pasture and agricultural lands planted in cash crops. The Cerrado has the richest flora among the world's savannas (> 7000 species) and high levels of endemism. Species richness of birds, fishes, reptiles, amphibians, and insects is equally high, whereas mammal diversity is relatively low. Deforestation rates have been higher in the Cerrado than in the Amazon rainforest, and conservation efforts have been modest. only 2.2% of its area is under legal protection. Numerous animal and plant species are threatened with extinction, and an estimated 20% of threatened and endemic species do not occur in protected areas. Soil erosion, the degradation of the diverse Cerrado vegetation formations, and the spread of exotic grasses are widespread and major threats. The use of fire for clearing land and to encourage new growth for pasture has also caused damage, even though the Cerrado is afire-adapted ecosystem. Ecosystem experiments and modeling show that change in land cover is altering the hydrology and affecting carbon stocks and fluxes. Cerrado agriculture is lucrative, and agricultural expansion is expected to continue, requiring improvements in and extension of the transportation infrastructure, which will affect not only the Cerrado but also the Amazon forest. Large-scale landscape modification and threats to numerous species have led to renewed interest from various sectors in promoting the conservation of the Cerrado, particularly through strengthening and enlarging the system of protected areas and improving farming practices and thus the livelihoods of local communities.
机译：塞拉多（Cerrado）是世界生物多样性热点之一。在过去的35年中，其约200万国王的50％以上已转变为牧场和经济作物。塞拉多（Cerrado）具有世界上最稀树草原（> 7000种）中最丰富的植物区系，并且有很高的特有度。鸟类，鱼类，爬行动物，两栖动物和昆虫的物种丰富度同样很高，而哺乳动物的多样性则相对较低。塞拉多（Cerrado）的森林砍伐率高于亚马逊雨林，并且保护工作力度不大。其面积中只有2.2％受法律保护。许多动植物物种正面临灭绝的威胁，估计有20％的受威胁物种和特有物种不在保护区内。水土流失，各种Cerrado植被形成的退化以及奇异草的传播是广泛而重大的威胁。即使塞拉多（Cerrado）是适应火灾的生态系统，使用火清理土地和鼓励牧场的新生长也造成了破坏。生态系统实验和模型表明，土地覆盖的变化正在改变水文状况，并影响碳储量和通量。塞拉多农业利润丰厚，预计农业扩张将继续进行，这需要改善和扩展运输基础设施，这不仅会影响塞拉多，还会影响亚马逊森林。大规模的景观改造和对众多物种的威胁，引起了各界对促进塞拉多保护的重新关注，特别是通过加强和扩大保护区系统，改善了耕作方式，从而改善了当地社区的生计。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号