数字农科院2.0

Short-term effects of tillage disturbance and nutrient enrichment on above-ground plant communities and below-ground microorganisms in a Hulunber grassland

文献类型： 外文期刊

作者： Zhang, Yushu;Gu, Qian;Yu, Qiang;Ke, Yuguang;O. Muraina, Taofeek;Chen, Xin;Cao, Jixin;Xiao, Chunwang;Wu, Honghui

作者机构：

关键词： tillage disturbance;nutrient enrichment;plant communities;microbial communities;carbon mineralization

期刊名称： JOURNAL OF PLANT ECOLOGY

ISSN： 1752-9921

年卷期： 2025 年 18 卷 5 期

页码：

收录情况： SCIE（2025版） ; ; CSCD（2025-2026年度）

摘要： Land tillage disturbances and nutrient enrichment profoundly alter ecosystem processes and functions. Previous studies have explored the effects of tillage disturbance and nutrient enrichment on plant communities and soil properties. However, integrated studies of the effects of tillage disturbance and nutrient enrichment on multiple below-ground ecological processes and functions are needed. Here, we conducted a field experiment in the Hulunber grassland, establishing four treatments (control, tillage disturbance (D), nutrient enrichment (NPK mu) and tillage disturbance plus nutrient enrichment (NPK mu D)) to examine their influences on plant communities, soil microbial communities, and carbon mineralization. Compared with the D treatment, the NPK mu D treatment increased plant community biomass through a significant 13-fold rise in annual and biennial plant biomass (P < 0.01). Both the D treatment and NPK mu D treatment significantly decreased the Shannon index of plant communities (P < 0.05). Microbial network complexity increased under NPK mu treatment whereas the D treatment reduced it. Both D treatment and NPK mu treatments significantly reduced soil carbon mineralization, and NPK mu exacerbated the negative effects of tillage disturbance (P < 0.05). Partial Least Squares Path Modeling showed that plant diversity, biomass and soil properties influenced soil carbon mineralization directly and indirectly via soil bacterial and fungal communities. Our findings suggest that nutrient enrichment promotes the recovery of plant community productivity after disturbance, while the recovery of plant diversity and soil microbial community structure may require a longer period. Therefore, achieving comprehensive ecological integrity characterized by stable plant community structure and healthy soil microbial communities requires long-term dynamic monitoring and targeted management strategies.

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