中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 植物研究所
  3. 中国科学院植物研究所
  4. 植被与环境变化国家重点实验室
The response of grassland mycorrhizal fungal abundance to a range of long-term grazing intensities

文献类型：期刊论文

作者Faghihinia, Maede2; Zou, Yi; Chen, Zheng; Bai, Yongfei5; Li, Wenhuai5; Marrs, Rob2; Staddon, Philip L.
刊名RHIZOSPHERE
出版日期2020
卷号13
关键词AMF Grassland Overgrazing Soil nutrients availability Topography Mixed-effects model
DOI10.1016/j.rhisph.2019.100178
文献子类Article
英文摘要Keystone root symbiotic arbuscular mycorrhizal fungi play a major role in maintaining plant biodiversity, increasing plant productivity and enhancing storage of carbon in soil. AM fungi are ubiquitous and found in most ecosystems including grasslands currently experiencing increasing pressures form human activity. Grazing is known to impact AM fungi but very little is known about how AM fungi are affected by different levels of grazing intensity. Here we report on results from a long-term experimental site in a typical steppe in the north of China, containing seven levels of field-manipulated grazing intensities maintained for over 13 years. We assessed arbuscular mycorrhizal fungal abundance, represented by soil hyphal length density and mycorrhizal root colonization (mycorrhizal root frequency, intensity and arbuscule intensity) within the farm-scale field experiment. We also measured environmental variables to explain the responses of mycorrhizal fungi to grazing intensity. Our results showed that with an increase in grazing intensity, soil hyphal length density linearly decreased. There was, however, no significant trend for mycorrhizal root colonization variables in relation to grazing intensity. Mycorrhizal root frequency was negatively correlated with topographic-induced changes in soil nitrogen and phosphorus, while arbuscule intensity was marginally negatively correlated with soil available phosphorus. Further, we found a possible hump-shaped relationship between the ratio of external to internal AM fungal structures and grazing intensity. Our finding showed that external AM fungal structure was clearly impacted by grazing intensity but that this was not the case for internal mycorrhizal structures. This indicated that mycorrhizal functioning was impacted by the intensity of grazing as the mycorrhizal structures responded differently. Indeed the ratio of the foraging extra-radical mycorrhizal hyphae to intra-radical mycorrhizal structures was highest at moderate grazing intensity but strongly decreased by high grazing intensity. Our study suggests that the impacts of grazing intensity on the plant-AMF association could lead to further knock-on effects on the plant-soil system via the feedbacks that exist between plant and AMF communities.
学科主题Agronomy ; Plant Sciences ; Soil Science
出版地AMSTERDAM
电子版国际标准刊号2452-2198
WOS关键词ARBUSCULAR MYCORRHIZAE ; INNER-MONGOLIA ; COLONIZATION ; STEPPE ; VEGETATION ; DIVERSITY ; HERBIVORY ; COMMUNITY ; CARBON ; TOPOGRAPHY
WOS研究方向Agriculture ; Plant Sciences
语种英语
WOS记录号WOS:000521128100012
出版者ELSEVIER
资助机构XJTLU Research Development Fund [RDF-15-02-13] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31600365] ; China Postdoctoral Science FoundationChina Postdoctoral Science Foundation [2016M591283]
源URL[http://ir.ibcas.ac.cn/handle/2S10CLM1/21849]  
专题植被与环境变化国家重点实验室
作者单位1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
2.[Faghihinia, Maede; Zou, Yi; Chen, Zheng; Staddon, Philip L.] Xian Jiaotong Liverpool Univ, Dept Hlth & Environm Sci, Suzhou 215123, Jiangsu, Peoples R China
3.Staddon, Philip L.] Univ Gloucestershire, Countryside & Community Res Inst, Cheltenham GL50 4AZ, Glos, England
4.Staddon, Philip L.] Royal Agr Univ, Sch Agr Food & Environm, Cirencester GL7 6JS, England
5.Univ Liverpool, Sch Environm Sci, Liverpool L69 3GP, Merseyside, England
推荐引用方式
GB/T 7714		 Faghihinia, Maede,Zou, Yi,Chen, Zheng,et al. The response of grassland mycorrhizal fungal abundance to a range of long-term grazing intensities[J]. RHIZOSPHERE,2020,13.
APA Faghihinia, Maede.,Zou, Yi.,Chen, Zheng.,Bai, Yongfei.,Li, Wenhuai.,...&Staddon, Philip L..(2020).The response of grassland mycorrhizal fungal abundance to a range of long-term grazing intensities.RHIZOSPHERE,13.
MLA Faghihinia, Maede,et al."The response of grassland mycorrhizal fungal abundance to a range of long-term grazing intensities".RHIZOSPHERE 13(2020).

入库方式： OAI收割

来源：植物研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。