• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Plant ecology & diversity >Changes in forest structure and composition after fire in tropical montane cloud forests near the Andean treeline. (Special Issue: Ecosystem dynamics of Amazonian and Andean forests.)
【24h】

Changes in forest structure and composition after fire in tropical montane cloud forests near the Andean treeline. (Special Issue: Ecosystem dynamics of Amazonian and Andean forests.)

机译：安第斯山脉附近的热带山地云雾森林火灾后森林结构和组成的变化。 （特刊：亚马孙和安第斯森林的生态系统动态。）

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

Background: In tropical montane cloud forests (TMCFs) fires can be a frequent source of disturbance near the treeline. Aims: To identify how forest structure and tree species composition change in response to fire and to identify fire-tolerant species, and determine which traits or characteristics are associated with fire tolerance. Methods: Shifts in forest structure and diversity were assessed on 15 paired plots in burnt and unburnt (control) forests, along a fire chronosequence. Species were classified as fire-sensitive, fire survivors or fire thrivers, using a fire tolerance index. Regression and tree analyses were used to determine which traits contributed to the fire tolerance of species. Results: There were more small- and medium-sized trees in the burnt plots independent of time since the last fire. There were shifts in family importance value and in species diversity among the plots. Of the 73 species analysed there were 39 fire-sensitive species, 19 fire survivors and 14 fire thrivers. Sprouting ability and biomass showed a positive relationship with the fire tolerance of species. Conclusions: There were immediate as well as long-term (up to 15 years) effects of fire on forest structure and species composition, suggesting that TMCFs take more than 15 years to regenerate from a fire. Long-term studies are needed to fully understand regeneration patterns of TMCFs after fires.
机译：背景：在热带山地云森林（TMCF）中，火灾可能是林线附近的常见干扰源。目的：确定森林结构和树木物种组成如何响应火灾而变化，并确定耐火树种，并确定哪些特性或特征与耐火性相关。方法：在15个成对的烧毁和未烧（对照）森林中，按照火灾的时序，评估了森林结构和多样性的变化。使用耐火指数将物种分为对火敏感的，幸存者或较火的物种。回归分析和树木分析用于确定哪些性状有助于物种的耐火性。结果：自上次火灾以来，烧毁的地块中有更多的中小型树木，与时间无关。在样地间，家庭重要价值和物种多样性发生了变化。在分析的73个物种中，有39个对火敏感的物种，19个火灾幸存者和14个火灾幸存者。发芽能力和生物量与物种的耐火性呈正相关。结论：火灾对森林结构和物种组成具有立即和长期（长达15年）的影响，这表明TMCF从火灾中再生需要超过15年的时间。为了充分了解火灾后TMCF的再生方式，需要进行长期研究。

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