• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文OA文献 >Litter stoichiometric traits of plant species of high-latitude ecosystems show high responsiveness to global change without causing strong variation in litter decomposition.
【2h】

Litter stoichiometric traits of plant species of high-latitude ecosystems show high responsiveness to global change without causing strong variation in litter decomposition.

机译：高纬度生态系统植物种类的凋落物化学计量特征显示出对全球变化的高响应能力，而不会引起凋落物分解的强烈变化。

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

High-latitude ecosystems are important carbon accumulators, mainly as a result of low decomposition rates of litter and soil organic matter. We investigated whether global change impacts on litter decomposition rates are constrained by litter stoichiometry. • Thereto, we investigated the interspecific natural variation in litter stoichiometric traits (LSTs) in high-latitude ecosystems, and compared it with climate change-induced LST variation measured in the Meeting of Litters (MOL) experiment. This experiment includes leaf litters originating from 33 circumpolar and high-altitude global change experiments. Two-year decomposition rates of litters from these experiments were measured earlier in two common litter beds in sub-Arctic Sweden. • Response ratios of LSTs in plants of high-latitude ecosystems in the global change treatments showed a three-fold variation, and this was in the same range as the natural variation among species. However, response ratios of decomposition were about an order of magnitude lower than those of litter carbon/nitrogen ratios. • This implies that litter stoichiometry does not constrain the response of plant litter decomposition to global change. We suggest that responsiveness is rather constrained by the less responsive traits of the Plant Economics Spectrum of litter decomposability, such as lignin and dry matter content and specific leaf area. © 2012 The Authors New Phytologist © 2012 New Phytologist Trust.
机译：高纬度生态系统是重要的碳积累器，主要是由于枯枝落叶和土壤有机质的分解率低所致。我们调查了全球变化对垃圾分解速率的影响是否受到垃圾化学计量的限制。 •到此为止，我们调查了高纬度生态系统中凋落物化学计量特征（LSTs）的种间自然变化，并将其与由凋落物会议（MOL）实验测得的气候变化引起的LST变化进行了比较。该实验包括源自33个绕极和高海拔全球变化实验的凋落物。这些实验的垃圾两年分解率是较早在瑞典亚北极地区的两个普通垃圾床上测得的。 •在全球变化处理中，高纬度生态系统植物中LST的响应率显示出三倍的变化，与物种间的自然变化在同一范围内。但是，分解的响应率比垫料的碳/氮比要低大约一个数量级。 •这意味着凋落物化学计量不限制植物凋落物分解对全球变化的响应。我们认为，响应性受到植物经济谱中凋落物可分解性的响应性较弱的约束，例如木质素和干物质含量和特定叶面积。 ©2012作者新植物学家©2012新植物学家信托。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

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