...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Plant and Soil >Decomposition processes interacting with microtopography maintain ecosystem heterogeneity in a subalpine grassland
【24h】

Decomposition processes interacting with microtopography maintain ecosystem heterogeneity in a subalpine grassland

机译：与微口术相互作用的分解过程维持亚马尔斯草原中的生态系统异质性

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

AimsGrasslands are among the largest ecosystems in the world and store up to 30% of the global reserves of carbon. Decomposition processes have a crucial role in maintaining carbon balance, but few studies have investigated the heterogeneity of this process at small scale, especially in alpine ecosystems. We aimed at investigating the interactions between decomposition and environmental heterogeneity at microscale (i.e. elevation gradient &1m) in a subalpine grassland on the western Italian Alps characterised by the presence of parallel hummock and hollow areas.MethodsIn the study area we monitored microenvironmental drivers (soil temperature and soil water content), plant distribution and decomposition. The latter was studied through a litter bags approach followed by elemental analysis, C-13 NMR and FT-IR spectroscopies.ResultsMicrotopography exerted a direct and indirect control over litter decomposition by affecting plant species distribution and microclimatic conditions. The different elemental and biochemical properties of plants, interacting with microtopography, led to a higher decomposition rate of forb than grass litter, and in hollow than in hummock areas. The observed differences were both quanti- and qualitative.ConclusionsDecomposition processes bridge the gap between plant community structure and ecosystem functioning, determining a feedback mechanism that maintains ecosystem heterogeneity at the microscale.
机译：AimsGrasslands是世界上最大的生态系统之一，占全球碳储量的30％。分解过程在维持碳平衡方面具有至关重要的作用，但很少有研究在小规模中调查了该过程的异质性，特别是在高山生态系统中。我们旨在调查在西部意大利阿尔卑斯州的微尺度（即抬高梯度＆amp; 1m）的分解和环境异质性之间的相互作用，其特征在于，在西部的西部阿尔卑斯州的亚马尔斯草原上，其特征在于并行管道和空心区域。方法，我们监测了微环境的研究区域司机（土壤温度和土壤含水量），植物分布和分解。后者通过垃圾袋进行研究，然后进行元素分析，C-13 NMR和FT-IR光谱。通过影响植物物种分布和微跨度条件，对凋落物分解进行直接和间接控制。植物的不同元素和生化特性，与微外影相互作用，导致福特的较高分解速度而不是草垃圾，而不是在水管区域中。观察到的差异是量化和定性的.Conclusionsdection工艺桥接工厂群落结构与生态系统之间的差距，确定在微尺度保持生态系统异质性的反馈机制。

著录项

  • 来源
    《Plant and Soil》 |2019年第2期|共17页
  • 作者

    Oddi L.; Celi L.; Cremonese E.; Filippa G.; Galvagno M.; Palestini G.; Siniscalco C.;

  • 作者单位

    Univ Torino Dept Life Sci &

    Syst Biol Via Pier Andrea Mattioli 25 I-10125 Turin Italy;

    Univ Torino Dept Agr Forestry &

    Food Sci Via Leonardo da Vinci 44 I-10095 Grugliasco TO Italy;

    Environm Protect Agcy Aosta Valley ARPA VdA Localita Grande Charriere 44 I-11020 St Christophe AO Italy;

    Environm Protect Agcy Aosta Valley ARPA VdA Localita Grande Charriere 44 I-11020 St Christophe AO Italy;

    Environm Protect Agcy Aosta Valley ARPA VdA Localita Grande Charriere 44 I-11020 St Christophe AO Italy;

    Univ Torino Dept Life Sci &

    Syst Biol Via Pier Andrea Mattioli 25 I-10125 Turin Italy;

    Univ Torino Dept Life Sci &

    Syst Biol Via Pier Andrea Mattioli 25 I-10125 Turin Italy;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 土壤学;
  • 关键词

    Forbs and grasses; FT-IR; Litter bags; Litter chemistry; Nardus stricta; NMR;

    机译：FORBS和草;FT-IR;垃圾袋;凋落物化学;nardus stricta;nmr;

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