干旱区生态环境知识资源中心(Arid): Soil nutrients, enzyme activities, and microbial communities differ among biocrust types and soil layers in a degraded karst ecosystem

Arid

DOI	10.1016/j.catena.2022.106057
	Soil nutrients, enzyme activities, and microbial communities differ among biocrust types and soil layers in a degraded karst ecosystem
	Zhang, Yuandong; Gao, Min; Yu, Chunya; Zhang, Hengbin; Yan, Ni; Wu, Qimei; Song, Yuehua; Li, Xiaona
通讯作者	Li, XA
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2022
卷号	212
英文摘要	Being different from the well-known and extensively researched counterparts in arid and semi-arid regions, biological soil crusts (BSCs) in degraded karst ecosystems with subtropical humid climate have been paid little attention. In this study, we investigated the differences of nutrient content, enzyme activity, and microbial communities between different types of BSCs (cyanobacterial crusts, moss crusts, moss-cyanobacteria mixed crusts, and bare soils), and between the BSCs layer and underlying soil. The results showed that the soil nutrient (total nitrogen [TN], total phosphorus [TP], and NH4-N) contents and enzyme activity (urease) in the late successional stage (moss crusts) were higher than those in early-successional stages (cyanobacterial crusts, moss-cyanobacteria mixed crusts, and bare soils). The species richness of the bacterial community increased with the succession of BSCs, but that of the fungal community did not change. The diversity and composition of both bacterial and fungal communities were not significantly different among biocrust types. The nutrient content (TN, NH4-N), enzyme activity (urease, nitrate reductase, sucrase), and the richness of bacteria and fungi were significantly higher in BSCs layer than in subsurface soils. For either bacteria or fungi, there was a significant difference in community species composition but not in diversity between BSCs layer and subsurface soils. Besides, the results of network topological properties showed that the network structures of both bacteria and fungi in the BSCs layer were more complex than that in the subsurface, and positive links dominated both networks. These results indicate the importance of the BSCs layer especially moss crusts for nutrient accumulation and microbial genetic resources, and provide an essential basis for further understanding the ecological functions of BSCs in degraded karst ecosystems with subtropical humid climate.
英文关键词	Biological soil crusts Degraded karst ecosystems Enzyme activities Microbial communities Network analysis Soil nutrients
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000790442700005
WOS关键词	GURBANTUNGGUT DESERT ; SUCCESSIONAL STAGES ; PHYSICOCHEMICAL CHARACTERISTICS ; COLORADO PLATEAU ; TENGGER DESERT ; MOJAVE DESERT ; CRUSTS ; DIVERSITY ; CARBON ; MICROSTRUCTURE
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392080
推荐引用方式 GB/T 7714	Zhang, Yuandong,Gao, Min,Yu, Chunya,et al. Soil nutrients, enzyme activities, and microbial communities differ among biocrust types and soil layers in a degraded karst ecosystem[J],2022,212.
APA	Zhang, Yuandong.,Gao, Min.,Yu, Chunya.,Zhang, Hengbin.,Yan, Ni.,...&Li, Xiaona.(2022).Soil nutrients, enzyme activities, and microbial communities differ among biocrust types and soil layers in a degraded karst ecosystem.CATENA,212.
MLA	Zhang, Yuandong,et al."Soil nutrients, enzyme activities, and microbial communities differ among biocrust types and soil layers in a degraded karst ecosystem".CATENA 212(2022).