Changes in soil bacterial communities and functional groups beneath coarse woody debris across a subalpine forest successional series

• DOI: 10.1016/j.gecco.2023.e02436
• Publication Date: 2023-03-13T17:23:26Z
• Authors: Zhihui Wang; Mingzhen Xu; Fei Li; Yi Bai; Jianfeng Hou; Xuqing Li; Rui Cao; Yuyue Deng; Yurui Jiang; Huaibin Wang; Wanqin Yang
• Keywords: Coarse Woody Debris; Chronosequence; Subalpine forest; Acidobacteria; Primary succession

Although the role of coarse woody debris (CWD) in nurturing biodiversity has been well documented, there is little understanding how CWD with varying diameters across forest succession series affect composition and diversity soil bacterial community. Therefore, this study investigated community beneath decay classes six different successional forests, which constituted a subalpine Wanglang National Nature Reserve eastern Qinghai–Tibet Plateau, China. The functional groups communities varied greatly succession, diameters. alpha these decreased gradually along gradients, whereas slight differences were observed among class dominated by Proteobacteria Acidobacteria under all conditions, their relative abundance only succession. structure significantly diameters, but not classes. Chemoheterotrophy aerobic chemoheterotrophy conditions. Nitrogen-fixing taxa enriched highly decayed nitrogen concentration C:N ratio negatively correlated nitrogen-fixing communities. temperature stock soils CWD. In conclusion, levels stages harbor some unique phyla genera, association bacteria wood concluded that existence ecosystem could stimulate fixation.