...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Tree Physiology >Functional traits contributed to the superior performance of the exotic species Robinia pseudoacacia: a comparison with the native tree Sophora japonica
【24h】

Functional traits contributed to the superior performance of the exotic species Robinia pseudoacacia: a comparison with the native tree Sophora japonica

机译：功能性状促进了外来物种刺槐（Robinia pseudoacacia）的优异性能：与本地树槐（Sophora japonica）的比较

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Functional traits determine the ecological strategies of plants and therefore are widely considered to feature in the success of invasive species. By comparing a widespread exotic invasive species Robinia pseudoacacia L. with a related native one Sophora japonica L., this research aimed to study strategies of R. pseudoacacia for superior performance from the perspective of functional traits. We conducted a greenhouse experiment in which seedlings of R. pseudoacacia and S. japonica were grown separately under a factorial combination of two light regimes and three levels of nitrogen (N) fertilization, including a control and two levels intended to represent ambient and future levels of N deposition in Chinese forests. After 90 days of treatment, performance and functional traits were determined for the two species, the former referred to as the total biomass (TB) that directly affected fitness. Trait plasticity and integration (the pattern and extent of functional covariance among different plant traits) were analyzed and compared. We found that the two species showed significantly different plastic responses to light increase: in the low-light regime, they were similar in performance and functional traits, while in the high-light regime, R. pseudoacacia achieved a significantly higher TB and a suite of divergent but advantageous functional traits versus S. japonica, such as significantly greater photosynthetic capacity and leaf N concentration, and lower carbon-to-N ratio and root-to-shoot ratio, which conferred it the greater performance. Moreover, across the light gradient, R. pseudoacacia showed higher correlations between photosynthetic capacity and other functional traits than S. japonica. In contrast, N deposition showed little impact on our experiment. Our results suggested that across light regimes, three aspects of functional traits contributed to the superior performance of R. pseudoacacia: functional trait divergence, significantly different plasticity of these traits, as well as greater overall trait coordination.
机译：功能性状决定了植物的生态策略，因此被广泛认为是入侵物种成功的特征。通过比较广泛的外来入侵物种刺槐刺槐和相关的本地刺槐，该研究旨在从功能性状的角度研究刺槐的优异表现策略。我们进行了一个温室实验，其中在两种光照制度和三种氮肥水平下的因子分解组合下分别种植拟假木和粳稻的幼苗，包括对照和两种水平，分别代表环境水平和未来水平森林中氮的沉积经过90天的治疗后，确定了这两种物种的性能和功能性状，前者称为直接影响健康的总生物量（TB）。分析和比较了性状的可塑性和整合性（不同植物性状之间的功能协方差的模式和程度）。我们发现，这两种物种对光增加表现出明显不同的塑性响应：在弱光条件下，它们在性能和功能性状上相似，而在强光条件下，拟金合欢菌的结核病明显增加，并且与日本粳稻相比具有不同但有利的功能性状，例如光合作用能力和叶片氮浓度显着更高，碳氮比和根茎比更低，这使其具有更高的性能。此外，在整个光梯度上，拟金合欢比日本粳稻显示出更高的光合能力与其他功能性状之间的相关性。相反，氮沉积对我们的实验影响很小。我们的研究结果表明，在不同光照条件下，功能性状的三个方面有助于假相思的优异表现：功能性状发散，这些性状的可塑性显着不同以及整体性状的协调性更高。

著录项

相似文献

  • 外文文献
  • 中文文献
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