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首页> 外文期刊>Global Ecology and Conservation >Ecosystem multifunctionality is highly related to the shelterbelt structure and plant species diversity in mixed shelterbelts of eastern China
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Ecosystem multifunctionality is highly related to the shelterbelt structure and plant species diversity in mixed shelterbelts of eastern China

机译：生态系统的多功能性与中国东部混合型防护林的防护林结构和植物物种多样性高度相关

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p id="abspara0010"Global change induced biodiversity loss has greatly affected ecosystem functioning, and thus the multiple services delivered by the ecosystem. Considerable recent works have focused on evaluating how species diversity changes impacts multiple ecosystem functions and services simultaneously (called ecosystem multifunctionality, EMF), but none of these evaluations were conducted in mixed shelterbelt ecosystems, which are valuable in providing multiple ecological benefits for coastal human settlements. Here, we measured the shelterbelt structure, plant species diversity, major individual ecosystem services and the EMFs of four single-species dominated mixed shelterbelts and a non-forested land along the coastal area of Eastern China and quantified how shelterbelt structure and plant species diversity affected EMF in a natural coastal scenario. Among the four mixed shelterbelts, the Populus nigra (PN) dominated mixture had significantly higher shelterbelt porosity and height, while Ligustrum compactum (LC) and Koelreuteria bipinnata (KB) dominated mixtures both had higher species richness. Concerning individual ecosystem services, the PN dominated mixture is statistically better at windbreak, C fixation and Osub2/sub releasing, plant diversity maintenance, nutrient transformation and cycling services, while the Taxodium distichum (TD) dominated mixture does better in soil and water conservation, therefore we observed the highest EMF in the PN dominated mixture. Also, we found that both shelterbelt porosity and height had significant positive effects on EMF, while no relationship was detected between shelterbelt permeability and EMF. Plant species richness and Shannon-Wiener index had significantly positive effects on EMF, but Pielow index had no significant effect on EMF. This indicated that the vertical structure of shelterbelts played a more important role than horizontal structure concerning ecosystem functioning, and EMF was not only positively affected by species richness but also species heterogenicity. These results will be informative in the policy-making and functional management of the shelterbelts and deepen the understanding of the biodiversity-ecosystem functioning relationship under alternative environmental scenarios.
机译：id =“ abspara0010”>全球变化引起的生物多样性丧失已极大地影响了生态系统的功能，从而影响了生态系统提供的多种服务。最近的大量工作集中于评估物种多样性变化如何同时影响多种生态系统功能和服务（称为生态系统多功能性，EMF），但这些评估均未在混合型防护林生态系统中进行，这对于为沿海人类住区提供多种生态效益非常有价值。在这里，我们测量了中国东部沿海地区四种单一物种占主导的混合防护林带和非林地的防护林带结构，植物物种多样性，主要的个体生态系统服务和电磁场，并量化了防护林带结构和植物物种多样性如何受到影响自然沿海情景中的EMF。在四种混合防护林中，黑杨（PN）为主的混合物具有较高的防护林孔隙度和高度，而女贞（LC）和小白菜（Koelreuteria bipinnata）（KB）为主的混合物均具有更高的物种丰富度。在单个生态系统服务方面，PN占主导地位的混合物在防风，固碳和O 2 释放，植物多样性维持，养分转化和循环服务方面在统计上更好，而Distaxium distichum（TD）占优势的混合物更好在水土保持方面，因此我们在PN占主导地位的混合物中观察到了最高的EMF。此外，我们发现防护林的孔隙度和高度都对EMF产生了显着的正向影响，而防护林的渗透性与EMF之间未发现任何关系。植物物种丰富度和Shannon-Wiener指数对EMF具有显着正效应，而Pielow指数对EMF无显着影响。这表明，在生态系统功能方面，防护林带的垂直结构比水平结构更重要，EMF不仅受到物种丰富度的积极影响，而且还受到物种异质性的影响。这些结果将对防护林带的决策和功能管理提供有益的信息，并加深人们对替代环境情景下生物多样性与生态系统功能关系的理解。

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