Dynamics in soil microbial community during forest succession depend on soil properties in the karst region of Southwest China

Qin Peng; Min Song; Feng Wang; Hu Du; Tong Qing Song; Hui Jun Chen; Fu Ping Zeng; Wan Xia Peng

doi:10.20944/preprints202401.1305.v1

Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Version 1 : Received: 16 January 2024 / Approved: 17 January 2024 / Online: 17 January 2024 (15:53:23 CET)

Natural vegetation restoration has become an effective and rapid way for eco-logical restoration in fragile areas. However, the response of soil microorgan-isms remains unclear. Using high-throughput sequencing methods, we evalu-ated the dynamics of soil bacterial and fungal communities during forest suc-cession (shrubland, secondary forest, and primary forest) in the karst region of Southwest China. Secondary forest had significantly higher bacterial α-diversity than the shrubland and primary forest. Soil bacterial community in the primary forest was close to the shrubland but diverged from the secondary forest, and that the fungal community could be discriminated along forest suc-cession. Also, the microbial co-occurrence network indicated that soil fungi had less but more intense relationships than bacteria in the karst forests. Further-more, soil properties (pH, SOC, TN, moisture, and AK), soil microbial biomass (MBP, and MBN), and plant factors (Shannon index of woody plants) drove the dynamics of the soil bacterial community, while soil properties (i.e., pH) mostly explained the variation of the soil fungal community along karst forest succession. Different responses of soil bacteria and fungi to forest succession in a karst region give hints for ecological restoration along forest succession in the karst region.

Soil microbial community; Diversity; Occurrence; Succession; Karst forest

Environmental and Earth Sciences, Ecology

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Dynamics in soil microbial community during forest succession depend on soil properties in the karst region of Southwest China

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