文献类型：期刊文献

英文题名：Rhizosphere bacterial community structure and nutrient cycling genes jointly drive the soil multifunctionality of Phoebe bournei young plantations under potassium fertilizer

作者：Zhang, Ying[1,2] Wang, Xu[3] He, Gongxiu[1,2] Geng, Yuqing[4] Chen, Chuxiang[1] Zhou, Jinjin[1] Li, Zehao[1,2] Feng, Jiaqi[1] Diao, Yingying[1] Yang, Lili[1,2] Hou, Zhixia[4,6] Zhang, Xie[5] Sun, Honggang[7] Ji, Li[1]

第一作者：Zhang, Ying

通信作者：He, GX[1];Ji, L[1]

机构：[1]Cent South Univ Forestry & Technol, Sch Forestry, Changsha 410004, Peoples R China;[2]Cent South Univ Forestry & Technol, Natl Engn Lab Appl Technol Forestry & Ecol South C, Changsha 410004, Peoples R China;[3]Chinese Acad Forestry, Res Inst Trop Forestry, Guangzhou 510520, Peoples R China;[4]Beijing Forestry Univ, Coll Forestry, Beijing 100083, Peoples R China;[5]Hunan Acad Forestry, Changsha 410004, Peoples R China;[6]Beijing Forestry Univ, State Key Lab Efficient Prod Forest Resources, Beijing 100083, Peoples R China;[7]Chinese Acad Forestry, Res Inst Subtrop Forestry, Hangzhou 311400, Peoples R China

年份：2025

卷号：58

外文期刊名：GLOBAL ECOLOGY AND CONSERVATION

收录：;Scopus(收录号：2-s2.0-85217686658);WOS:【SCI-EXPANDED(收录号:WOS:001426815400001)】；

基金：This work was supported by the National Key Research and Development Program of China (Grant numbers [2021YFD2201303-02] ) , the Water Conservancy Science and Technology Projects in Hunan Province (Grant numbers [XSKJ2022068-35] ) , the Technology Program for Ecology Geological Survey and Monitoring Institute of Hunan Province (Grant numbers [2024-SKY-001] ) , the Scientific Research Project of Hunan Provincial Education Department (Grant numbers [23B0265] ) and Hunan Provincial Innovation Foundation for Postgraduate (Grant numbers [2024CX02047] ) .

语种：英文

外文关键词：Phoebe bournei; K addition; Rhizosphere soil bacteria; Soil multifunctionality; Functional genes

摘要：Potassium (K) plays a pivotal role in influencing the structure and function of soil microbial communities, thereby influencing soil multifunctionality. Researches on various fertilization practices for Phoebe bournei has primarily focused on microbial communities. However, the mechanism of functional potential of microbe in mediating the influence of K on soil multifunctionality remains insufficiently elucidated. Here, the experiment included five K additions (CK, 0 g; K1, 60 g; K2, 120 g; K3, 180 g; and K4, 240 g per plant) in P. bournei young plantations via 16S rRNA sequencing and quantitative microbial element cycling (QMEC) smart chip technology to investigate the impacts of K additions on rhizosphere soil bacterial community attributes, nutrient cycling genes (carbon, nitrogen, phosphorus), and soil multifunctionality. K additions decreased bacterial diversity, while enhancing the abundance of genes involved in C degradation, including those related to labile and recalcitrant C, as well as N cycling, P cycling, and soil multifunctionality. Comparatively, K1 and K2 additions had slight effects on soil multifunctionality, bacterial communities and the abundance of C, N and P cycling genes. PLS-PM results demonstrated that K additions improve soil multifunctionality indirectly by altering bacterial community structure and network complexity, as well as the functional potential linked to N and P cycling. Additionally, soil abiotic factors are the was the core predictor for maintaining soil multifunctionality. All in all, soil properties and bacterial functional attributes together drive soil multifunctionality in response to K additions. These findings highlight that adequate K