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Phytoremediation with application of anaerobic fermentation residues regulate the assembly of ecological clusters within co-occurrence network in ionic rare earth tailings soil: A pot experiment

文献类型： 外文期刊

作者： Chen, Liumeng 1 ; Chen, Shasha 2 ; Xing, Tao 1 ; Long, Yun 2 ; Wang, Zhi 1 ; Kong, Xiaoying 1 ; Xu, An 2 ; Wu, Qiangjian 2 ; Sun, Yongmin 1 ;

作者机构： 1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China

2.Jiangxi Acad Agr Sci, Inst Agr Appl Microbiol, Nanchang 330200, Peoples R China

3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

4.Univ Sci & Technol China, Hefei 230026, Peoples R China

关键词： Rare earth tailings soil; Anaerobic fermentation residues; Pennisetum hybrid; Ecological cluster; Assembly pattern; Driving factor

期刊名称：ENVIRONMENTAL POLLUTION （ 影响因子：8.9； 五年影响因子：9.5 ）

ISSN： 0269-7491

年卷期： 2024 年 340 卷

页码：

收录情况： SCI

摘要： The cultivation of energy plants (Pennisetum hybrid) with anaerobic fermentation residues has become an important phytoremediation approach in ionic rare earth elements (REEs) tailings because of its advantages in low cost and sustainability recently. In this study, a comparative pot experiment was carried out to determine the interaction pattern and key ecological clusters in microbial community respond to phytoremediation. Results showed that the application of biogas residues or slurry could effectively mitigate soil acidification, increase soil nutrients, alter REEs bioavailability and promote plant growth. Without fertilization, plant growth was restricted and soil acidification and nutrient-deficiency would be further aggravated. This difference in phytoremediation effect was associated with the assembly of seven key ecological clusters in co-occurrence network of rhizosphere soil. And such assembly pattern of cluster, determined by the environmental preference (e.g. pH, REEs), nutrient demand and interaction among clusters, could alter the microbial communities in response to the changes in soil context rapidly and exert corresponding ecological function during phytoremediation, such as participating in soil nutrient cycling, affecting plant biomass and altering REEs bioavailability. These findings provided new insights for anaerobic fermentation residues application, and can be beneficial to support for studying microbe plant combined remediation in the future.

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