Long-term effects of grazing and topography on extra-radical hyphae of arbuscular mycorrhizal fungi in semi-arid grasslands

doi:10.1007/s00572-017-0812-x

CORC > 植物研究所 > 中国科学院植物研究所 > 植被与环境变化国家重点实验室

	Long-term effects of grazing and topography on extra-radical hyphae of arbuscular mycorrhizal fungi in semi-arid grasslands
	Ren, Haiyan ; Gui, Weiyang ; Bai, Yongfei 4; Stein, Claudia 6,7; Rodrigues, Jorge L. M.; Wilson, Gail W. T.; Cobb, Adam B.; Zhang, Yingjun 3; Yang, Gaowen
刊名	MYCORRHIZA
	2018
卷号	28 期号:2 页码:117-127
关键词	Grazing pressure Hyphal length density Sheep Edaphic properties Structural equation modeling
ISSN号	0940-6360
DOI	10.1007/s00572-017-0812-x
文献子类	Article
英文摘要	Grazing and topography have drastic effects on plant communities and soil properties. These effects are thought to influence arbuscular mycorrhizal (AM) fungi. However, the simultaneous impacts of grazing pressure (sheep ha(-1)) and topography on plant and soil factors and their relationship to the production of extra-radical AM hyphae are not well understood. Our 10-year study assessed relationships between grazing, plant species richness, aboveground plant productivity, soil nutrients, edaphic properties, and AM hyphal length density (HLD) in different topographic areas (flat or sloped). We found HLD linearly declined with increasing grazing pressure (1.5-9.0 sheep ha(-1)) in sloped areas, but HLD was greatest at moderate grazing pressure (4.5 sheep ha(-1)) in flat areas. Structural equation modeling indicates grazing reduces HLD by altering soil nutrient dynamics in sloped areas, but non-linearly influences HLD through plant community and edaphic changes in flat areas. Our findings highlight how topography influences key plant and soil factors, thus regulating the effects of grazing pressure on extra-radical hyphal production of AM fungi in grasslands. Understanding how grazing and topography influence AM fungi in semi-arid grasslands is vital, as globally, severe human population pressure and increasing demand for food aggravate the grazing intensity in grasslands.
学科主题	Plant Sciences ; Mycology
电子版国际标准刊号	1432-1890
出版地	NEW YORK
WOS关键词	BELOW-GROUND CARBON ; INNER-MONGOLIA ; COMMUNITY STRUCTURE ; SOIL ; PLANT ; HERBIVORY ; NITROGEN ; COLONIZATION ; VEGETATION ; ECOSYSTEMS
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000422960000002
资助机构	National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31501996, 31700389] ; Basic research program of Jiangsu province (Natural Science Foundation)-Youth Foundation [BK20160738, BK20150665] ; Division Of Environmental BiologyNational Science Foundation (NSF)NSF - Directorate for Biological Sciences (BIO) [1440484] Funding Source: National Science Foundation
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/20706]
专题	植被与环境变化国家重点实验室
作者单位	1.Washington Univ, Dept Biol, 1 Brookings Dr, St Louis, MO 63130 USA 2.Rodrigues, Jorge L. M.] Univ Calif Davis, Dept Land Air & Water Resources, Davis, CA 95616 USA 3.Wilson, Gail W. T.; Cobb, Adam B.] Oklahoma State Univ, Nat Resource Ecol & Management, 008C Ag Hall, Stillwater, OK 74078 USA 4.Nanjing Agr Univ, Coll Agrograssland Sci, Nanjing 210095, Jiangsu, Peoples R China 5.China Agr Univ, Dept Grassland Sci, Beijing 100193, Peoples R China 6.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 7.Washington Univ, Tyson Res Ctr, 1 Brookings Dr, St Louis, MO 63130 USA
推荐引用方式 GB/T 7714	Ren, Haiyan,Gui, Weiyang,Bai, Yongfei,et al. Long-term effects of grazing and topography on extra-radical hyphae of arbuscular mycorrhizal fungi in semi-arid grasslands[J]. MYCORRHIZA,2018,28(2):117-127.
APA	Ren, Haiyan.,Gui, Weiyang.,Bai, Yongfei.,Stein, Claudia.,Rodrigues, Jorge L. M..,...&Yang, Gaowen.(2018).Long-term effects of grazing and topography on extra-radical hyphae of arbuscular mycorrhizal fungi in semi-arid grasslands.MYCORRHIZA,28(2),117-127.
MLA	Ren, Haiyan,et al."Long-term effects of grazing and topography on extra-radical hyphae of arbuscular mycorrhizal fungi in semi-arid grasslands".MYCORRHIZA 28.2(2018):117-127.