气候变化领域集成服务门户(CCPortal): Grazing greatly reduces the temporal stability of soil cellulolytic fungal community in a steppe on the Tibetan Plateau

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DOI	10.1016/j.jes.2021.09.023
	Grazing greatly reduces the temporal stability of soil cellulolytic fungal community in a steppe on the Tibetan Plateau
	Wang, Fei; Kong, Weidong; Ji, Mukan; Zhao, Kang; Chen, Hao; Yue, Linyan; Dong, Xiaobin
通讯作者	Kong, WD (通讯作者)
发表日期	2022
ISSN	1001-0742
EISSN	1878-7320
起始页码	48
结束页码	57
卷号	121
英文摘要	Excessive livestock grazing degrades grasslands ecosystem stability and sustainability by reducing soil organic matter and plant productivity. However, the effects of grazing on soil cellulolytic fungi, an important indicator of the degradation process for soil organic matter, remain less well understood. Using T-RFLP and sequencing methods, we investigated the effects of grazing on the temporal changes of cellulolytic fungal abundance and community structure in dry steppe soils during the growing months from May to September, on the Tibetan Plateau using T-RFLP and sequencing methods. The results demonstrated that the abundance of soil cellulolytic fungi under grazing treatment changed significantly from month to month, and was positively correlated with dissolved organic carbon (DOC) and soil temperature, but negatively correlated with soil pH. Contrastingly, cellulolytic fungal abundance did not change within the fencing treatment (ungrazed conditions). Cellulolytic fungal community structure changed significantly in the growing months in grazed soils, but did not change in fenced soils. Grazing played a key role in determining the community structure of soil cellulolytic fungi by explaining 8.1% of the variation, while pH and DOC explained 4.1% and 4.0%, respectively. Phylogenetically, the cellulolytic fungi were primarily affiliated with Ascomycota (69.65% in relative abundance) and Basidiomycota (30.35%). Therefore, grazing substantially reduced the stability of soil cellulolytic fungal abundance and community structure, as compared with the fencing treatment. Our finding provides a new insight into the responses of organic matter-decomposing microbes for grassland managements. (C) 2022 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
关键词	NORTHERN CHINA GRASSLANDS DISSOLVED ORGANIC-CARBON ELEVATED ATMOSPHERIC CO2 MICROBIAL COMMUNITY LOESS PLATEAU SEMIARID GRASSLANDS ALPINE GRASSLANDS DIVERSITY NITROGEN EXCLUSION
英文关键词	Cellulolytic fungal community; cbhI; Stability; Grazing; Dryland soil; Tibetan Plateau
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000800545000006
来源期刊	JOURNAL OF ENVIRONMENTAL SCIENCES
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260653
推荐引用方式 GB/T 7714	Wang, Fei,Kong, Weidong,Ji, Mukan,et al. Grazing greatly reduces the temporal stability of soil cellulolytic fungal community in a steppe on the Tibetan Plateau[J]. 中国科学院青藏高原研究所,2022,121.
APA	Wang, Fei.,Kong, Weidong.,Ji, Mukan.,Zhao, Kang.,Chen, Hao.,...&Dong, Xiaobin.(2022).Grazing greatly reduces the temporal stability of soil cellulolytic fungal community in a steppe on the Tibetan Plateau.JOURNAL OF ENVIRONMENTAL SCIENCES,121.
MLA	Wang, Fei,et al."Grazing greatly reduces the temporal stability of soil cellulolytic fungal community in a steppe on the Tibetan Plateau".JOURNAL OF ENVIRONMENTAL SCIENCES 121(2022).