气候变化领域集成服务门户(CCPortal): Arbuscular mycorrhizal fungal community structure following different grazing intensities in an alpine grassland

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DOI	10.1002/saj2.20218
	Arbuscular mycorrhizal fungal community structure following different grazing intensities in an alpine grassland
	Li, Qian; Xiang, Xingjia; Du, Yangong; Li, Yikang; Lin, Li; Zhang, Fawei; Guo, Xiaowei; Cao, Guangmin
通讯作者	Cao, GM (通讯作者)，Chinese Acad Sci, Northwest Inst Plateau Biol, Xinning Rd 23, Xining 810008, Qinghai, Peoples R China.
发表日期	2021
ISSN	0361-5995
EISSN	1435-0661
起始页码	1620
结束页码	1633
卷号	85 期号:5
英文摘要	Grazing alters the plant communities, soil properties, and habitat conditions of the alpine grassland. Arbuscular mycorrhizal fungi (AMF) are involved in the nutrient cycling of grassland ecosystems and form a mutual symbiosis with their host plants. Thus, AMF are sensitive to the impact of livestock grazing. However, the effects of grazing intensity on the AMF community composition and the association between AMF and environmental factors, such as soil physicochemical properties, enzyme activity, and glomalin-related soil proteins, remain unclear. Here, the response of the soil AMF community to grazing intensity gradients (i.e., light, moderate, and heavy grazing) was studied in an alpine grassland on the Qinghai-Tibet Plateau. The dominant AMF families included Glomeraceae, Gigasporaceae, Claroideoglomeraceae, Diversisporaceae, and Ambisporaceae. Significant shifts in the AMF community composition in response to grazing intensity were found in both surface and subsurface soils. Soil C/N ratio, plant diversity, soil compactness, chitinase activity, aboveground biomass, total N, soil moisture, and NO3--N significantly correlated with changes in the AMF community composition. Heavy grazing intensity was associated with the highest AMF alpha diversity, whereas moderate grazing intensity had the lowest AMF alpha diversity in both surface and subsurface soils. Grazing intensity, dominant plants, soil C and N concentrations, and soil compactness were significantly correlated with AMF diversity. These results demonstrated a significant response of the AMF community to grazing intensity, suggesting that plants increase their reliance on AMF symbioses with higher alpha diversity in the heavily degraded alpine grasslands of the Qinghai-Tibet Plateau.
关键词	SOIL MICROBIAL COMMUNITY CARBON NITROGEN GLOMALIN MANAGEMENT PROTEIN DECOMPOSITION PRODUCTIVITY DIVERSITY PATTERNS
语种	英语
WOS研究方向	Agriculture
WOS类目	Soil Science
WOS记录号	WOS:000674027500001
来源期刊	SOIL SCIENCE SOCIETY OF AMERICA JOURNAL
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/253682
作者单位	[Li, Qian; Du, Yangong; Li, Yikang; Lin, Li; Zhang, Fawei; Guo, Xiaowei; Cao, Guangmin] Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Qinghai Prov Key Lab Restorat Ecol Cold Reg, Xining 810008, Peoples R China; [Xiang, Xingjia] Anhui Univ, Sch Resources & Environm Engn, Hefei 230601, Peoples R China
推荐引用方式 GB/T 7714	Li, Qian,Xiang, Xingjia,Du, Yangong,et al. Arbuscular mycorrhizal fungal community structure following different grazing intensities in an alpine grassland[J]. 中国科学院西北生态环境资源研究院,2021,85(5).
APA	Li, Qian.,Xiang, Xingjia.,Du, Yangong.,Li, Yikang.,Lin, Li.,...&Cao, Guangmin.(2021).Arbuscular mycorrhizal fungal community structure following different grazing intensities in an alpine grassland.SOIL SCIENCE SOCIETY OF AMERICA JOURNAL,85(5).
MLA	Li, Qian,et al."Arbuscular mycorrhizal fungal community structure following different grazing intensities in an alpine grassland".SOIL SCIENCE SOCIETY OF AMERICA JOURNAL 85.5(2021).