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Alpine meadow degradation regulates soil microbial diversity via decreasing plant production on the Qinghai-Tibetan Plateau

文献类型： 外文期刊

作者： Sun, Yu 1 ; Zhang, Xiujuan 3 ; Yang, Yongsheng 1 ; Zhang, Yuheng 4 ; Wang, Junbang 5 ; Zhang, Mingyang 1 ; Wu, Chu 3 ; Zou, Junliang 6 ; Zhou, Huakun 1 ; Li, Jiexia 1 ;

作者机构： 1.Chinese Acad Sci, Key Lab Adaptat & Evolut Plateau Biota, Xining 810008, Peoples R China

2.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Restorat Ecol Cold Reg Qinghai Prov, Xining 810008, Peoples R China

3.Yangtze Univ, Coll Hort & Gardening, Jingzhou 434025, Peoples R China

4.Jingmen Planning & Survey Design Inst, Jingmen 448000, Peoples R China

5.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Natl Ecosyst Sci Data Ctr, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China

6.Beijing Acad Agr & Forestry Sci, Inst Grassland Flowers & Ecol, Beijing 100097, Peoples R China

7.23 Xinning Rd, Xining, Qinghai, Peoples R China

关键词： Alpine meadow degradation; Bacterial diversity; Fungal diversity; Above -ground biomass; Below -ground biomass

期刊名称：ECOLOGICAL INDICATORS （ 影响因子：7.0； 五年影响因子：6.6 ）

ISSN： 1470-160X

年卷期： 2024 年 163 卷

页码：

收录情况： SCI

摘要： In recent decades, alpine meadows have experienced severe degradation owing to external disturbances. Although soil microorganisms are critical for ecosystem services, little is known about their responses to soil degradation and the potential patterns in alpine meadows. To solve this question, we collected and analyzed soil samples from three degraded alpine meadows situated on the Qinghai-Tibet Plateau. We aimed to examine the effects of degradation on soil microbial diversity and identify the ecological predictors for the diversity of bacteria and fungi. Our results showed that alpine meadow degradation significantly changed soil bacterial and fungal diversity and community composition. Specifically, the relationship between bacterial and fungal diversity and degradation intensity was a hump-shaped, with the highest diversity observed at a moderate degradation level. Additionally, alpine meadow degradation-induced changes in microbial diversity were strongly correlated with decreased plant production, with fungal diversity showing a closer link with belowground biomass (BGB) than with bacterial diversity. Our findings offer empirical evidence that intermediate disturbance (i.e., moderate degradation) may be beneficial for supporting soil biodiversity. This has important implications for informing policy and management strategies meant to conserve soil biodiversity and ecosystem services when facing anthropogenic change.

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