首页> 外文期刊>Plant Ecology >Fire form and function: evidence for exaptive flammability in the New Zealand flora
【24h】

Fire form and function: evidence for exaptive flammability in the New Zealand flora

机译:火的形式和功能:新西兰菌丛中易燃性的证据

获取原文
获取原文并翻译 | 示例
       

摘要

This study tests whether or not foliar flammability is related to resource-use and anti-herbivore defence strategies of plant species. We measured the flammability (at 400 A degrees C) of 1640 dry and fresh leaves across 115 common native New Zealand woody and herbaceous species collected from sites throughout New Zealand. We used three indicators of foliar flammability-leaf temperature at smoke production and on ignition and the rate of increase in leaf temperature during the combustion process. We tested for relationships between these flammability measures, foliar morphological and chemical traits and growth form. All significant correlations showed increased foliar flammability with increasing foliar surface area:volume ratio (SAV) and nutrient content and decreasing tissue density, lignin and secondary metabolite concentrations. Coniferous trees were the growth form with the least flammable leaves due to leaf morphology associated low leaf SAV and high tissue density. This suggests there may be a general relationship between resource-use strategies and foliar flammability, via the influence of leaf morphology on both these aspects of plant function.
机译:这项研究测试了叶的可燃性是否与植物物种的资源利用和抗草食动物防御策略有关。我们测量了从新西兰各地收集的115种常见的新西兰原生木本和草种在1640片干燥和新鲜叶子上的可燃性(在400 A摄氏度下)。我们使用了三个指标,即烟气产生时和点燃时的叶面易燃性叶温以及燃烧过程中叶温的升高速率。我们测试了这些可燃性措施,叶的形态和化学特性与生长形式之间的关系。所有显着的相关性表明,随着叶表面积:体积比(SAV)和养分含量的增加以及组织密度,木质素和次生代谢产物浓度的降低,叶的可燃性增强。针叶树由于叶片形态相关的低叶SAV和高组织密度而成为具有最少易燃叶的生长形式。这表明,通过叶片形态对植物功能这两个方面的影响,资源利用策略和叶面可燃性之间可能存在一般关系。

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