Planting density effect on poplar growth traits and soil nutrient availability, and response of microbial community, assembly and function

文献类型： 外文期刊

第一作者： Qiao, Rongye

作者： Qiao, Rongye;Xu, Mingzhen;Yang, Qiqi;Shen, Xiaolei;Yu, Dingyi;Zhang, Pingdong;Guo, Hui;Song, Zhen;Chen, Yinglong;Ding, Changjun;Guo, Hui

作者机构：

关键词： Density effect; Microbial community; Soil nutrients; Community assembly; Key taxa

期刊名称：BMC PLANT BIOLOGY （ 影响因子：4.8； 五年影响因子：5.4 ）

ISSN： 1471-2229

年卷期： 2024 年 24 卷 1 期

页码：

收录情况： SCI

摘要： Background The interaction between soil characteristics and microbial communities is crucial for poplar growth under different planting densities. Yet, little is understood about their relationships and how they respond to primary environmental drivers across varying planting densities. Results In this study, we investigated poplar growth metrics, soil characteristics, and community assembly of soil bacterial and fungal communities in four poplar genotypes (M1316, BT17, S86, and B331) planted at low, medium, and high densities. Our findings reveal that planting density significantly influenced poplar growth, soil nutrients, and microbial communities (P < 0.05). Lower and medium planting densities supported superior poplar growth, higher soil nutrient levels, increased microbial diversity, and more stable microbial co-occurrence networks. The assembly of bacterial communities in plantation soils was predominantly deterministic (beta NTI < -2), while fungal communities showed more stochastic assembly patterns (-2 < beta NTI < 2). Soil available phosphorus (AP) and potassium (AK) emerged as pivotal factors shaping microbial communities and influencing bacterial and fungal community assembly. Elevated AP levels promoted the recruitment of beneficial bacteria such as Bacillus and Streptomyces, known for their phosphate-solubilizing abilities. This facilitated positive feedback regulation of soil AP, forming beneficial loops in soils with lower and medium planting densities. Conclusions Our study underscores the critical role of planting density in shaping soil microbial communities and their interaction with poplar growth. This research carries significant implications for enhancing forest management practices by integrating microbiological factors to bolster forest resilience and productivity.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序