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首页> 外文期刊>Aquatic Sciences >Cascading effects of elevation, soil moisture and soil nutrients on plant traits and ecosystem multi-functioning in Poyang Lake wetland, China
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Cascading effects of elevation, soil moisture and soil nutrients on plant traits and ecosystem multi-functioning in Poyang Lake wetland, China

机译：鄱阳湖湿地植物特征升高，土壤水分和土壤养分对植物性状及生态系统多功能的级联作用

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摘要

Trait-based approaches have been used to explore ecosystem level consequences of local changes in biodiversity along environmental gradients. Using a novel response-effect trait framework, we seek to identify and explain the mechanisms governing the cascading effects of environment on plant traits and ecosystem multi-functioning in the large Poyang Lake wetland, China. We sampled the above-ground biomass of the plant communities in 129,100 m(2) plots and estimated the community weighted mean (functional identity, CWM) and distribution (functional diversity, FD) of seven plant morphological and phenological traits. The response-effect trait model (as showed by generalized multilevel path models) explained 97% and 51% of the variation in community productivity and soil carbon, respectively, and indicated that CWM morphometric (-morph) and CWM phenotypic (-pheno) traits promoted community productivity. Soil nutrient, followed by soil moisture exerted dominant and direct control on soil carbon. Elevation as well as soil moisture and nutrients had indirect effects on community productivity and soil carbon either via CWM or FD traits. Our study indicates that mass ratio processes (as reflected by CWM) modified the variations in community productivity and that niche complementary processes (as reflected by FD) explained some of the variations in soil carbon, though the relationships were weak. We conclude that a trait-based approach is useful in predicting the cascading effects of environmental factors on productivity, while the tested traits (that did not include root traits) mediated only a few environmental effects on soil carbon.
机译：基于特质的方法已被用于探讨沿环境梯度局部生物多样性变化的生态系统水平后果。采用新型响应效应特质框架，我们寻求识别和解释治疗环境对植物性状和生态系统的级联影响的机制，在中国大型鄱阳湖湿地多功能。我们在129,100米（2）个地块中对植物群落的上述生物量进行了取样，估计七种植物形态和鉴生性状的社区加权平均值（功能性身份，CWM）和分布（功能多样性，FD）。响应效应特征模型（如广泛的多级路径模型所示）分别解释了群落生产力和土壤碳变异的97％和51％，并表明CWM形态（-MORPH）和CWM表型（-PHENO）特征促进了社区生产力。土壤营养素，其次是土壤水分施加着土壤碳的主导和直接控制。升高以及土壤水分和营养物质对群落生产力和土壤碳的间接影响通过CWM或FD特征。我们的研究表明，质量比例（由CWM反映）修改了社区生产力的变化，并且利基互补过程（如FD反映）解释了土壤碳的一些变化，尽管关系较弱。我们得出结论，基于特征的方法可用于预测环境因素对生产率的级联影响，而测试的性状（不包括根部特征）介导对土壤碳的一些环境影响。

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  • 来源
    《Aquatic Sciences》 |2020年第2期|34.1-34.10|共10页
  • 作者

    Fu Hui; Yuan Guixiang; Ge Dabing; Li Wei; Zou Dongsheng; Huang Zhenrong; Wu Aiping; Liu Qiaolin; Jeppesen Erik;

  • 作者单位

    Hunan Agr Univ Dept Ecol Coll Biosci & Biotechnol Hunan Prov Key Lab Rural Ecosyst Hlth Dongting La Changsha 410128 Peoples R China|Jiangxi Inst Water Sci Beijing East Rd 1038 Nanchang 330029 Jiangxi Peoples R China;

    Hunan Agr Univ Dept Ecol Coll Biosci & Biotechnol Hunan Prov Key Lab Rural Ecosyst Hlth Dongting La Changsha 410128 Peoples R China|Jiangxi Inst Water Sci Beijing East Rd 1038 Nanchang 330029 Jiangxi Peoples R China;

    Hunan Agr Univ Dept Ecol Coll Biosci & Biotechnol Hunan Prov Key Lab Rural Ecosyst Hlth Dongting La Changsha 410128 Peoples R China;

    Nanchang Inst Technol Res Inst Ecol & Environm Sci Nanchang 330029 Jiangxi Peoples R China;

    Hunan Agr Univ Dept Ecol Coll Biosci & Biotechnol Hunan Prov Key Lab Rural Ecosyst Hlth Dongting La Changsha 410128 Peoples R China;

    Chinese Acad Sci Inst Subtrop Agr Changsha Res Stn Agr & Environm Monitoring Key Lab Agroecol Proc Subtrop Reg Changsha Hunan 410125 Peoples R China|Chinese Acad Sci Grad Univ Beijing Peoples R China;

    Hunan Agr Univ Dept Ecol Coll Biosci & Biotechnol Hunan Prov Key Lab Rural Ecosyst Hlth Dongting La Changsha 410128 Peoples R China;

    Hunan Agr Univ Dept Ecol Coll Biosci & Biotechnol Hunan Prov Key Lab Rural Ecosyst Hlth Dongting La Changsha 410128 Peoples R China;

    Aarhus Univ Dept Biosci Vejlsovej 25 DK-8600 Silkeborg Denmark|Univ Chinese Acad Sci Sino Danish Ctr Educ & Res SDC Beijing Peoples R China|Middle East Tech Univ Ctr Ecosyst Res & Implementat Dept Biol Sci Limnol Lab Ankara Turkey;

  • 收录信息 美国《科学引文索引》(SCI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Elevation gradients; Functional traits; Multiple ecosystem functions; Mass ratio effects; Niche complementary effects;

    机译：海拔梯度;功能性状;多种生态系统功能;质量比效应;利基互补效果;

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