旅游踩踏对梵净山植物根系真菌群落的影响

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Abstract The aim of this study was to explore the responses of the root-associated fungal community to tourism-related trampling at different elevations on Fanjing Mountain. Extremely high trampling plots, high trampling plots, moderate trampling plots, light trampling plots and no trampling plots were established at 1100, 1500 and 2000m, and root samples were collected in the plots by the point-centered-quarter method. The characteristics of root-associated fungal community were evaluated by high-throughput sequencing technology. Ascomycota was the dominant phylum, while Hyaloscyphaceae, Dermateaceae, Herpotrichiellaceae and Glomeraceae were the most abundant families. Higher fungal richness and diversity were found in the plots with moderate or light trampling, and two-way permutational multivariate analysis of variance showed that tourism-related trampling, elevation, and the tourism trampling×elevation interaction significantly affected the root-associated fungal community. The changes in root-associated fungal richness were mainly driven by elevation, tourism-related trampling, root tissue density and leaf biomass; elevation, tourism-related trampling, specific root length, root carbon content and leaf biomass were the important factors influencing the Shannon index. The changes in tourism-related trampling, elevation, soil total carbon, soil total phosphorus, root carbon content, mean root diameter, leaf biomass and leaf carbon content significantly affected root-associated fungal community structure, and the nitrogen and phosphorus contents explained the vast majority of the differences in root-associated fungal community composition.

Key words： Fanjing Mountain tourism-related trampling elevation gradient root-associated fungal community high-throughput sequencing

Received: 11 August 2022

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X172

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	LIU Min
	ZHANG Tao
	LI Long
	ZHENG Rong
	YANG Chuan-dong
	WANG Zu-hua

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LIU Min,ZHANG Tao,LI Long等. The effects of tourism-related trampling on the root-associated fungal community of Fanjing Mountain[J]. CHINA ENVIRONMENTAL SCIENCECE, 2023, 43(4): 2017-2027.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2023/V43/I4/2017

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