Li Peikun, Zhang Jian, Ding Shunping, Yan Peisen, Zhang Panpan, Ding Shengyan
Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions, Ministry of Education, College of Geography and Environmental Science, Henan University, Kaifeng 475004, China.
College of Geography and Environmental Science, Henan University, Kaifeng 475004, China.
Insects. 2022 Nov 30;13(12):1103. doi: 10.3390/insects13121103.
The large-scale spatial variation in and causes of biotic turnover of soil fauna remain poorly understood. Analyses were conducted based on published data from 14 independent sampling sites across five forest ecosystems in East Asia. Jaccard and Sørensen's indices were used to measure turnover rates in soil fauna orders. A redundancy analysis was used to investigate multiple environmental controls of the composition of soil fauna communities. The results showed that both Jaccard's and Sørensen's index increased significantly with increasing latitude difference. The environment explained 54.1%, 50.6%, 57.3% and 50.9% of the total variance, and spatial factors explained 13.8%, 15.9%, 21.0% and 12.6% of the total variance in the orders' composition regarding overall, phytophagous, predatory and saprophagous fauna, respectively. In addition, climate factors in environmental processes were observed to have a stronger effect than soil factors on the orders' turnover rates. Our results support the hypothesis that the effect of environment factors on soil animal taxa turnover is more important than the effect of spatial factors. Climatic factors explained more variation in the turnover of phytophagic fauna, but soil and environment factors equally explained the variation in the turnover of predatory fauna. This study provides evidence to support both environmental filtering and dispersal limitation hypotheses at the regional and population scales.
土壤动物群落生物更替的大规模空间变化及其成因仍知之甚少。基于东亚五个森林生态系统中14个独立采样点的已发表数据进行了分析。使用杰卡德指数和索伦森指数来衡量土壤动物目内的更替率。采用冗余分析来研究土壤动物群落组成的多种环境控制因素。结果表明，杰卡德指数和索伦森指数均随纬度差异的增加而显著增加。环境分别解释了总体、植食性、捕食性和腐食性动物目组成总变异的54.1%、50.6%、57.3%和50.9%，空间因素分别解释了13.8%、15.9%、21.0%和12.6%。此外，在环境过程中，气候因素对目更替率的影响比土壤因素更强。我们的结果支持以下假设：环境因素对土壤动物分类群更替的影响比空间因素更重要。气候因素解释了植食性动物更替中更多的变异，但土壤和环境因素对捕食性动物更替变异的解释程度相同。本研究为区域和种群尺度上的环境过滤和扩散限制假说提供了支持证据。
