干旱区生态环境知识资源中心(Arid): Cyanobacterial diversity of biological soil crusts and soil properties in karst desertification area

Arid

DOI	10.3389/fmicb.2023.1113707
	Cyanobacterial diversity of biological soil crusts and soil properties in karst desertification area
	Chen, Qian; Yan, Ni; Xiong, Kangning; Zhao, Jiawei
通讯作者	Xiong, KN
来源期刊	FRONTIERS IN MICROBIOLOGY
EISSN	1664-302X
出版年	2023
卷号	14
英文摘要	As important components of the biological soil crusts (BSCs) and of the primary stage of crust succession, cyanobacterial communities occupy an important ecological niche and play an important ecological role in desertification areas. In this study, we focused on the karst desertification area, which also belongs to the same category of desertification, and selected three study areas, Guanling-Zhenfeng Huajiang (HJ), Bijie Salaxi (SLX), and Shibing (SB), in the Guizhou Plateau, which represents the overall ecological environment of South China karst, to conduct surveys on the diversity of BSC species and soil properties. Analysis of the cyanobacterial communities and physicochemical properties using the Shannon-Wiener diversity index, principal component analysis, and redundancy analysis revealed that: (1) The three study areas had common cyanobacterial species, with a total of 200 species distributed across 22 genera, 2 classes, 5 orders, and 6 families belonging to the Oscillatoriales (39%), Scytonematales (24.5%), Chroococcales (23%), Nostocales (11.5%), and Rivulariales (2%), (2) The number of species increased with the intensity of karst desertification-while Oscillatoriaceae was the dominant family in HJ and moderate-severe desertification areas, Chroococcaceae and Scytonemataceae were dominant in the mild and potential desertification areas SLX and SB, (3) The Shannon-Wiener diversity indices followed the trend: SLX (3.56) > SB (3.08) > HJ (3.01), indicating that the species were more evenly distributed in mild desertification, (4) In the carbonate background, shrubland harbored the largest number of cyanobacterial species compared to grassland, bare land, and arbor woodland; however, the highest number was documented in arbor woodland in dolomite karst, (5) The soil is weathered limestone or yellow soil in all three areas, with pH ranging from 5.73 to 6.85, fine sand dominated, and soil nutrients increased with the intensity of desertification, and (6) Redundancy analysis showed that organic carbon, soil moisture content (0-5 cm), and total nitrogen substantially influenced cyanobacterial diversity. These results reveal that differences in soil nutrient content play an important role in regulating the cyanobacterial diversity and composition, thereby establishing a foundation for further research and application of soil ecological restoration of cyanobacteria in BSCs of karst desertification areas.
英文关键词	biological soil crusts cyanobacteria species diversity soil properties karst desertification
类型	Article
语种	英语
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000952120600001
WOS关键词	NITROGENASE ACTIVITY ; DESERT SOILS ; GRADIENT ; ALGAE ; BIODIVERSITY ; COMMUNITIES ; FIXATION ; ECOLOGY ; SITE
WOS类目	Microbiology
WOS研究方向	Microbiology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/396564
推荐引用方式 GB/T 7714	Chen, Qian,Yan, Ni,Xiong, Kangning,et al. Cyanobacterial diversity of biological soil crusts and soil properties in karst desertification area[J],2023,14.
APA	Chen, Qian,Yan, Ni,Xiong, Kangning,&Zhao, Jiawei.(2023).Cyanobacterial diversity of biological soil crusts and soil properties in karst desertification area.FRONTIERS IN MICROBIOLOGY,14.
MLA	Chen, Qian,et al."Cyanobacterial diversity of biological soil crusts and soil properties in karst desertification area".FRONTIERS IN MICROBIOLOGY 14(2023).