Forested green spaces in urban and peri-urban areas are expected to serve multiple roles, including providing ecosystem services and maintaining species diversity and soil health, both of which are particularly important for human health. However, soil compaction is a major cause of soil degradation in urban areas and brownfields (abandoned, previously developed land). We examined the effects of compaction on soil physicochemical properties, tree species richness, tree basal area, and the functional diversity of microbial communities in an immature volcanic soil through a long-term (14-year) field experiment. Our experimental results showed that soil compaction reduced not only both tree species richness and biomass but also the multifunctionality of soil microbial communities. Furthermore, tree species richness was significantly positively related to soil microbial decomposition activity. These findings provide evidence of above- and belowground interactions and underscore their importance in the design of urban forests using ecosystem-based solutions.

中文翻译：

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土壤板结对森林发展初期地上和地下相互作用的影响


城市和城郊地区的森林绿地有望发挥多种作用，包括提供生态系统服务以及维护物种多样性和土壤健康，这两者都对人类健康尤为重要。然而，土壤压实是城市地区和棕地（废弃的、以前开发的土地）土壤退化的主要原因。我们通过长期 （14 年） 的现场试验，研究了压实对未成熟火山土壤中土壤理化性质、树种丰富度、树木基部面积和微生物群落功能多样性的影响。我们的实验结果表明，土壤压实不仅降低了树种丰富度和生物量，还降低了土壤微生物群落的多功能性。此外，树种丰富度与土壤微生物分解活性呈显著正相关。这些发现提供了地上和地下相互作用的证据，并强调了它们在使用基于生态系统的解决方案设计城市森林中的重要性。