Wen Hui-Hui, Wu Fu-Zhong, Zhang Hui-Ling, Peng Qing-Qing, Qiu Dan-Ni, Peng Yan
School of Geographical Science/School of Carbon Neutrality Future Technology, Fujian Normal University, Fuzhou 350007, China.
Fujian Sanming Forest Ecosystem National Observation and Research Station, Sanming 365002, Fujian, China.
Ying Yong Sheng Tai Xue Bao. 2023 Oct;34(10):2797-2804. doi: 10.13287/j.1001-9332.202310.031.
Soil fauna play an important role in key functions of ecosystem such as material cycling. Litter quality and microenvironment of different tree species may regulate soil fauna community structure. In this study, we investigated soil fauna community structure, the differences of taxonomic and functional groups, and the regulatory factors under eight dominant tree species in August 2022. We captured 567 soil fauna (except for termites and ants), belonging to 3 phyla, 10 classes, 26 orders, and 99 families, with Achipteriidae, Trygoniidae, Poduridae, and Isotomidae as the dominant species. Tree species significantly affected soil fauna abundance, following an order: > > > > > > > . However, the richness, evenness, and diversity of soil fauna under different tree species were significantly different. Richness and diversity of , soil fauna were relatively high, while , were relatively low. The evenness of meso-microfauna of was the highest, which was significantly higher than that of and . The evenness of macrofauna and total soil fauna was not significantly different among the eight tree species. In addition, the abundance of omnivores and herbivores soil fauna was relatively high under , but relatively low under . The abundance of saprophages and predators soil fauna of , was higher than , while saprophages was mainly meso-microfauna. Results of redundancy analysis showed that litter N, C:N, and K were the main factors affecting soil fauna community structure. The results indicated that the tree species with thicker litter layer and higher N and K contents may be conducive to enhancing the diversity of soil fauna community and affecting the distribution of different functional groups, thus contributing to the maintenance of forest biodiversity.
土壤动物群在生态系统的关键功能如物质循环中发挥着重要作用。不同树种的凋落物质量和微环境可能会调节土壤动物群落结构。在本研究中，我们于2022年8月调查了8种优势树种下的土壤动物群落结构、分类群和功能群的差异以及调节因素。我们捕获了567只土壤动物（白蚁和蚂蚁除外），隶属于3个门、10个纲、26个目和99个科，其中长角跳虫科、菱蝗科、棘跳虫科和等节跳虫科为优势种。树种显著影响土壤动物的丰度，顺序为：> > > > > > > 。然而，不同树种下土壤动物的丰富度、均匀度和多样性存在显著差异。 、 土壤动物的丰富度和多样性相对较高，而 、 相对较低。 的中小型土壤动物均匀度最高，显著高于 和 。8种树种中大型土壤动物和总土壤动物的均匀度无显著差异。此外，杂食性和植食性土壤动物的丰度在 下相对较高，但在 下相对较低。 、 的腐食性和捕食性土壤动物的丰度高于 ，而腐食性动物主要是中小型土壤动物。冗余分析结果表明，凋落物氮、碳氮比和钾是影响土壤动物群落结构的主要因素。结果表明，凋落物层较厚且氮、钾含量较高的树种可能有利于提高土壤动物群落的多样性，影响不同功能群的分布，从而有助于维持森林生物多样性。
