文献类型：期刊文献

英文题名：Cascade effects of plant diversity on soil multifunctionality in antimony-arsenic contaminated sites: The pivotal role of microbial network complexity

作者：Gai, Xu[1] Jiang, Yan[1] Lan, Kaimin[1] Xiao, Jiang[1] Xue, Liang[1] Chen, Guangcai[1]

第一作者：盖旭

通信作者：Xue, L[1];Chen, GC[1]

机构：[1]Chinese Acad Forestry, Res Inst Subtrop Forestry, Hangzhou 311400, Peoples R China

年份：2026

卷号：217

外文期刊名：APPLIED SOIL ECOLOGY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001618988700001)】；

基金：This work was supported by the National Key Research and Devel-opment Program of China (2020YFC1807704) and the Fundamental Research Funds of CAF (CAFYBB2024MA041) , which are gratefully acknowledged.

语种：英文

外文关键词：Soil multifunctionality; Phytocommunity; Microbial networks; Soil aggregates; Antimony mine

摘要：Although soil microorganisms are widely recognized as essential for sustaining ecosystem functions, the specific contributions of bacterial and fungal succession to the functions during vegetation restoration in metal mining areas remain poorly understood. Previous studies have mainly emphasized univariate diversity, often overlooking that ecosystem processes are driven by complex interactions among microbial taxa. Here, we established native plant communities of varying compositions (herbaceous monoculture, herbaceous polyculture, shrub-herb polyculture, and tree-shrub-herb polyculture) to artificially simulate successional stages in an antimony-arsenic contaminated site, and assessed the relationships of soil multifunctionality, microbial diversity, and network complexity at two depths (0-10 and 10-30 cm). These functions included 17 variables related to nutrient status, C-N-P cycling, and soil structural stability. The results showed that increasing plant diversity enhanced vegetation productivity, accelerated phytoremediation efficiency, and improved soil multifunctionality, with positive effects consistent across depths. Bacterial alpha-diversity, as well as bacterial-fungal network topology and complexity, increased with plant diversity, whereas fungal communities exhibited slower succession and more stable composition. Soil multifunctionality was positively correlated with both bacterial diversity and network complexity, but network complexity had more positive relationships and explained more variance than diversity. These relationships remained robust after accounting for confounding drivers, including plant diversity, soil depth, and cross-kingdom microbial diversity. This persistence reveals the pivotal role of network complexity in sustaining soil multifunctionality, with bacterial diversity exerting indirect effects through network interactions. This study illustrates that more diverse vegetation during vegetation restoration in metal mining areas promotes soil multifunctionality, and highlights the importance of network complexity in sustaining soil functions.