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Soil Properties Regulate Soil Microbial Communities During Forest Succession in a Karst Region of Southwest China

文献类型： 外文期刊

作者： Jiang, Shanghua 1 ; Song, Min 1 ; Du, Hu 1 ; Wang, Feng 1 ; Song, Tongqing 1 ; Chen, Huijun 1 ; Zeng, Fuping 1 ; Peng, Wanxia 1 ;

作者机构： 1.Chinese Acad Sci, Inst Subtrop Agr, Inst Ctr Shared Technol & Facil, Changsha 410125, Peoples R China

2.Chinese Acad Sci, Guangxi Key Lab Karst Ecol Proc & Serv, Huanjiang Agr Ecosyst Observat & Res Stn Guangxi, Huanjiang Observat & Res Stn Karst Ecosyst, Huanjiang 547100, Peoples R China

3.Hunan Agr Univ, Coll Environm & Ecol, Changsha 410128, Peoples R China

4.Hunan Acad Agr Sci, Inst Agr Environm & Ecol, Changsha 410125, Peoples R China

关键词： soil microbial community; diversity; occurrence; succession; karst forest

期刊名称：MICROORGANISMS （ 影响因子：4.2； 五年影响因子：4.6 ）

ISSN：

年卷期： 2024 年 12 卷 11 期

页码：

收录情况： SCI

摘要： Natural vegetation restoration has emerged as an effective and rapid approach for ecological restoration in fragile areas. However, the response of soil microorganisms to natural succession remains unclear. To address this, we utilized high-throughput sequencing methods to assess the dynamics of soil bacterial and fungal communities during forest succession (shrubland, secondary forest, and primary forest) in a karst region of Southwest China. Our study revealed that bacterial alpha-diversity was significantly higher in secondary forest compared to both shrubland and primary forest. Intriguingly, the soil bacterial community in primary forest exhibited a closer resemblance to that in shrubland yet diverged from the community in secondary forest. Conversely, the soil fungal community underwent notable variations across the different forest stages. Furthermore, analysis of the microbial co-occurrence network revealed that, within these karst forests, the relationships among soil fungi were characterized by fewer but stronger interactions compared to those among bacteria. Additionally, soil properties (including pH, soil organic carbon, total nitrogen, moisture, and available potassium), soil microbial biomass (specifically phosphorus and nitrogen), and plant diversity were the drivers of soil bacterial community dynamics. Notably, soil pH accounted for the majority of the variations observed in the soil fungal community during karst forest succession. Our findings provide valuable insights that can inform the formulation of strategies for ecological restoration and biodiversity conservation in karst regions, particularly from a microbial perspective.

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