<b>Plant mixture effects on Collembola increased under reduced water availability</b>

In this study, we combined a field experiment with a meta-analysis to examine how the effects of plant mixture on soil Collembola abundance and diversity change with water availability. We assessed soil Collembola abundance, richness, evenness, and composition in stands dominated by <i>Populus tremuloides</i>, <i>Pinus banksiana</i>, and their relatively even mixtures under three precipitation treatments: reduced (-25% throughfall), ambient, and added (+25% throughfall) in a boreal forest of Central Canada.本研究结合野外实验与元分析（meta-analysis），旨在探究植物混交对土壤弹尾虫（Collembola）丰度与多样性的效应如何随水分可利用性发生变化。实验于加拿大中部的北方森林中开展，设置了3种降水处理：减少25%穿透雨、自然降水、增加25%穿透雨；分别在美洲山杨（*Populus tremuloides*）、班克松（*Pinus banksiana*）单优林及其相对均匀混交林中，对土壤弹尾虫的丰度、物种丰富度、均匀度及群落组成进行了调查评估。