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Long-term effects of grazing and topography on extra-radical hyphae of arbuscular mycorrhizal fungi in semi-arid grasslands | |
Ren, Haiyan; Gui, Weiyang; Bai, Yongfei1; Stein, Claudia2,3; Rodrigues, Jorge L. M.; Wilson, Gail W. T.; Cobb, Adam B.; Zhang, Yingjun6; Yang, Gaowen | |
2018 | |
发表期刊 | MYCORRHIZA |
ISSN | 0940-6360 |
卷号 | 28期号:2页码:117-127 |
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. |
关键词 | Grazing pressure Hyphal length density Sheep Edaphic properties Structural equation modeling |
学科领域 | Plant Sciences ; Mycology |
DOI | 10.1007/s00572-017-0812-x |
收录类别 | SCI |
语种 | 英语 |
WOS关键词 | BELOW-GROUND CARBON ; INNER-MONGOLIA ; COMMUNITY STRUCTURE ; SOIL ; PLANT ; HERBIVORY ; NITROGEN ; COLONIZATION ; VEGETATION ; ECOSYSTEMS |
WOS记录号 | WOS:000422960000002 |
出版者 | SPRINGER |
文献子类 | Article |
出版地 | NEW YORK |
EISSN | 1432-1890 |
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 |
作者邮箱 | yanggw@njau.edu.cn |
作品OA属性 | Green Published |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | 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.Nanjing Agr Univ, Coll Agrograssland Sci, Nanjing 210095, Jiangsu, Peoples R China 2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 3.Washington Univ, Tyson Res Ctr, 1 Brookings Dr, St Louis, MO 63130 USA 4.Washington Univ, Dept Biol, 1 Brookings Dr, St Louis, MO 63130 USA 5.Rodrigues, Jorge L. M.] Univ Calif Davis, Dept Land Air & Water Resources, Davis, CA 95616 USA 6.Wilson, Gail W. T.; Cobb, Adam B.] Oklahoma State Univ, Nat Resource Ecol & Management, 008C Ag Hall, Stillwater, OK 74078 USA 7.China Agr Univ, Dept Grassland Sci, Beijing 100193, Peoples R China |
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. |
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