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- Title
土壤微生物群落结构对宅基地复垦种植禾草的响应.
- Authors
康 瑛; 胡 佳; 谢富贵; 郭芸君; 李 芹; 朱永群; 林超文; 张建华; 胡容平; 王 谢
- Abstract
[Objective] The restoration of soil ecological functions following the reclamation of residential land is a crucial technical issue in urban land resource management research. [ Method] In the present study, microcosm experiments were conducted to investigate the effects of planting different grass species ( Festuca elata, Deschampsia grass, and Lolium perenne) on the bacterial and fungal community structure of reclaimed residential land, with natural recovery ( NER) as the control. [ Result] ( i) The fungal abundance in reclaimed residential soil was higher than that of bacteria, although the number of bacterial species was greater than that of fungi. (ii) Planting grasses significantly regulated the community structure of soil bacteria and fungi, with certain bacteria and fungi showing a significant increase in relative abundance, such as Actinobacteria, Chloroflexi, Planctomycetes, and Basidiomycota, which were all increased by more than five times. (iii) Grass plants had a greater impact on soil bacteria compared to fungi. At the phylum level, 13 bacteria significantly responded to the treatments, in contrast to only two fungi. ( iv) Planting grasses reduced the abundance of Sphingomonas but promoted the proliferation of specific fungal species, resulting in functional substitution. ( v) Seminibacterium, Betaproteobacteria, Ohtaekwangia and Streptococcus were a class of indicator bacteria that mainly characterized the cultivation of grass in mudslides. (vi) Planting grasses were more likely to promote the growth and reproduction of strongly associated fungal species in the soil, so the fungal groups associated with different grasses might also vary. [ Conclusion] After the reclamation of homesteads, the soil microbial function mainly focuses on the rapid decomposition of organic materials to supply plants, while grass plant species can achieve targeted restoration of soil ecological function by adjusting the soil microbial community structure.
- Subjects
MICROBIAL diversity; MICROBIAL communities; SELF-reliant living; FRONTIER &; pioneer life
- Publication
Southwest China Journal of Agricultural Sciences, 2023, Vol 36, Issue 10, p2092
- ISSN
1001-4829
- Publication type
Article
- DOI
10.16213/j.cnki.scjas.2023.10.003