...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Ecological research >Ecological stoichiometry and invasive strategies of two alien species (Bidens pilosa and Mikania micrantha) in subtropical China
【24h】

Ecological stoichiometry and invasive strategies of two alien species (Bidens pilosa and Mikania micrantha) in subtropical China

机译：亚热带两种外来物种（Bidens pilosa和Mikania micrantha）的生态化学计量和入侵策略

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

To understand the growth and nutritional strategies of two alien Asteraceae species in both nutrient-rich and nutrient-poor environments by measuring the stoichiometric characteristics of plants and soil nutrients, two alien species Bidens pilosa and Mikania micrantha from subtropical zone of southeast China was studied. The two species grow in P-rich environments and/or have a strong capacity for absorption and utilization of P. The two invasive alien species studied used diverse nutrition and growth strategies under different habitats. For B. pilosa under low-N environments, leaves showed lower N:P and C:P than in other habitats. In contrast, roots showed greater N:P, C:P and C:N ratios, suggesting a resource conservative strategy, whereas under high-N and high-P, or high-N and low-P environments, B. pilosa roots had lower N:P and C:P ratios, suggesting a growth competitive strategy. Conversely, M. micrantha did not match either strategy in high- or low-resource habitats. The growth of B. pilosa is resource-dependent, mainly driven by C and N content, and C:N ratio in the soil, as well as allocation of P within the plant. The growth of M. micrantha is less limited by soil resources, but mainly by tradeoffs between allocation to leaves versus roots. There are various growth and nutrient strategies under different resource environments (e.g., resource conservative strategy, and/or growth competitive strategy), as well as fundamental trade-offs between life history traits, which all contribute to the successful invasion by alien species.
机译：为了通过测量植物和土壤养分的化学计量特性来了解两种外来菊科植物在营养丰富和营养缺乏的环境中的生长和营养策略，研究了来自中国东南亚热带地区的两种外来物种Bidens pilosa和Mikania micrantha。这两个物种在富含磷的环境中生长和/或具有很强的吸收和利用磷的能力。所研究的两个外来入侵物种在不同的生境下使用了多种营养和生长策略。对于低氮环境下的B. pilosa，叶片的N：P和C：P比其他生境低。相比之下，根系显示出更高的N：P，C：P和C：N比，这表明是资源保守的策略，而在高N和高P或高N和低P的环境下，棉铃虫的根系具有较低的N：P和C：P比率，表明了增长竞争策略。相反，在高资源或低资源的生境中，M。micrantha不符合任何一种策略。 B. pilosa的生长取决于资源，主要由土壤中的C和N含量，C：N比以及植物内P的分配决定。薇甘菊的生长受土壤资源的限制较小，但主要受叶分配与根分配之间的折衷影响。在不同资源环境下存在多种生长和养分策略（例如资源保守策略和/或增长竞争策略），以及生活史特征之间的基本权衡，所有这些都有助于外来物种的成功入侵。

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