Partitioned Recirculating Renovation for Traditional Rice-Fish Farming Induced Substantial Alterations in Bacterial Communities Within Paddy Soil

文献类型： 外文期刊

第一作者： Hou, Yiran

作者： Hou, Yiran;Li, Hongwei;Jia, Rui;Zhou, Linjun;Li, Bing;Zhu, Jian;Hou, Yiran;Jia, Rui;Li, Bing;Zhu, Jian;Hou, Yiran;Li, Hongwei;Jia, Rui

作者机构：

关键词： integrated rice-fish farming; rice paddy; partitioned recirculating renovation; microbial community; community assembly

期刊名称：AGRONOMY-BASEL （ 影响因子：3.4； 五年影响因子：3.8 ）

ISSN：

年卷期： 2025 年 15 卷 7 期

页码：

收录情况： SCI

摘要： Integrated agriculture-aquaculture (IAA), represented by integrated rice-fish farming, offers a sustainable production method that addresses global food issues and ensures food security. Partitioned recirculating renovation based on traditional integrated rice-fish farming is an effective way to facilitate the convenient harvesting of aquatic products and avoid difficulties associated with mechanical operations. To elucidate the impact of partitioned recirculating renovation on the bacterial communities within paddy field ecosystems, we investigated the soil environmental conditions and soil bacterial communities within integrated rice-fish farming, comparing those with and without partitioned recirculating renovations. The findings indicated a significant reduction in the bacterial community richness within paddy soil in the ditch (fish farming area), along with noticeable changes in the relative proportions of the predominant bacterial phyla in both the ditch and the rice cultivation area following the implementation of partitioned recirculating renovation. In both the ditch and the rice cultivation area, partitioned recirculating renovation diminished the edges and nodes in the co-occurrence networks for soil bacterial communities and considerably lowered the robustness index, negatively impacting the stability of bacterial communities in paddy soil. Simultaneously, the partitioned recirculating renovation substantially influenced the bacterial community assembly process, enhancing the relative contributions of stochastic processes such as dispersal limitation, drift, and homogenizing dispersal. In addition, partitioned recirculating renovation significantly altered the soil environmental conditions in both the ditch and the rice cultivation area, with environmental factors being markedly correlated with the soil bacterial community, especially the total nitrogen (TN) and total phosphorus (TP), which emerged as the primary environmental drivers influencing the soil bacterial community. Overall, these results elucidated the ecological impacts of partitioned recirculating renovation on the paddy soil from a microbiomic perspective, providing a microbial basis for optimizing partitioned rice-fish systems.

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