Soil networks become more connected and take up more carbon as nature restoration progresses.
Soil networks become more connected and take up more carbon as nature restoration progresses.
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DOI：
10.1038/ncomms14349
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发表时间：
2017-02-08
影响因子：
16.6
通讯作者：
van der Putten WH
中科院分区：
文献类型：
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作者：
Morriën E;Hannula SE;Snoek LB;Helmsing NR;Zweers H;de Hollander M;Soto RL;Bouffaud ML;Buée M;Dimmers W;Duyts H;Geisen S;Girlanda M;Griffiths RI;Jørgensen HB;Jensen J;Plassart P;Redecker D;Schmelz RM;Schmidt O;Thomson BC;Tisserant E;Uroz S;Winding A;Bailey MJ;Bonkowski M;Faber JH;Martin F;Lemanceau P;de Boer W;van Veen JA;van der Putten WH
土壤生物在陆地生态系统地上群落动态和生态系统功能中具有重要作用。然而，大多数研究认为土壤生物群是一个黑匣子或集中在特定的群体，而对整个土壤网络知之甚少。在这里，我们表明，在自然恢复的过程中，废弃的耕地土壤生物群的组成变化，之前收紧地下网络，对应于提高效率的碳吸收。在中长期废弃农田土壤中，真菌的碳吸收量增加，而真菌生物量没有增加，细菌与真菌的比例也没有变化。我们的研究结果的含义是，在自然恢复的养分循环和碳吸收的效率可以增加真菌组成和/或真菌活性的转变。因此，我们建议需要重新考虑土壤食物网结构与土壤碳循环之间的关系。生境恢复对地下生物和生态系统过程的影响知之甚少。Morriën及其同事表明，当以前的耕地恢复时，土壤生物群的组成和网络相互作用的变化会导致碳吸收效率的提高。
Soil organisms have an important role in aboveground community dynamics and ecosystem functioning in terrestrial ecosystems. However, most studies have considered soil biota as a black box or focussed on specific groups, whereas little is known about entire soil networks. Here we show that during the course of nature restoration on abandoned arable land a compositional shift in soil biota, preceded by tightening of the belowground networks, corresponds with enhanced efficiency of carbon uptake. In mid- and long-term abandoned field soil, carbon uptake by fungi increases without an increase in fungal biomass or shift in bacterial-to-fungal ratio. The implication of our findings is that during nature restoration the efficiency of nutrient cycling and carbon uptake can increase by a shift in fungal composition and/or fungal activity. Therefore, we propose that relationships between soil food web structure and carbon cycling in soils need to be reconsidered. Effects of habitat restoration on belowground organisms and ecosystem processes are poorly understood. Morriën and colleagues show that changes in the composition and network interactions of soil biota lead to improved carbon uptake efficiency when formerly cultivated land is restored.