Impacts of Differing Grazing Rates on Canopy Structure and Species Composition in Hulunber Meadow Steppe

doi:10.1016/j.rama.2014.12.001

	Impacts of Differing Grazing Rates on Canopy Structure and Species Composition in Hulunber Meadow Steppe
	Yan, Ruirui ; Xin, Xiaoping ; Yan, Yuchun ; Wang, Xu ; Zhang, Baohui ; Yang, Guixia ; Liu, Shimin 1,2; Deng, Yu 3; Li, Linghao4
	2015
发表期刊	RANGELAND ECOLOGY & MANAGEMENT
ISSN	1550-7424
卷号	68 期号:1 页码:54-64
摘要	In this study, the impacts of cattle grazing with differing grazing rates on species composition, canopy structural traits, standing crop of canopy biomass, and plant species diversity were examined in a meadow steppe of the Hulunber grasslands, Northeastern China. Six stocking-rate treatments (0, 0.23, 0.34, 0.46, 0.69, and 0.92 AU.ha(-1)) with three replicates were established, and observations were conducted from 2009 to 2011. Our findings demonstrate that short-term grazing substantially altered the species composition and relative dominance, standing crop of aboveground biomass, and canopy structural traits, whereas no significant changes in species diversity and evenness occurred in response to different-rated grazing in this meadow steppe, which has a long-term evolutionary grazing history and high-resources availabilities. We found that perennial graminoid significantly decreased, while forbs and annuals increased at the same time, with increasing grazing intensity and duration; canopy height and coverage decreased substantially with increasing stocking rates, whereas significant changes in plant density occurred only at heavy grazing in the second and third years; and significant negative linear relations were found between the standing crop of biomass and grazing intensity in each individual year or for 3 years on average. Significantly highest species richness and canopy dominance occurred only at the intermediate grazing rate in the third year, and intermediate grazing intensity also maintained a highly constant standing crop of canopy biomass in the 3 years, all being in accordance with the intermediate disturbance hypothesis. Our findings imply that monitoring changes in species composition, canopy traits, and standing crop of biomass in grassland communities can provide important references for assessing current grazing management scenarios and conducting timely adaptive practices to maintain the long-term ability of grassland systems to perform their ecological functions. (C) 2015 Published by Elsevier Inc. on behalf of Society for Range Management.
关键词	cattle herbivory canopy biomass compensatory growth life form intermediate grazing effects relative dominance of species
学科领域	Ecology ; Environmental Sciences
DOI	10.1016/j.rama.2014.12.001
收录类别	SCI
语种	英语
WOS关键词	VEGETATION DYNAMICS ; COMMUNITY STRUCTURE ; DIVERSITY ; RESPONSES ; CATTLE ; GRASSLANDS ; RANGELANDS ; PLANTS ; LAND
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000351949300006
出版者	SOC RANGE MANAGEMENT
文献子类	Article
出版地	LAKEWOOD
EISSN	1551-5028
资助机构	International Science and Technology Cooperation Project [2012DFA31290] ; National Natural Science Foundation of China [41201199] ; public sector projects in the Ministry of Agriculture [201003019, 201003061, 200903060, 201303060] ; national high-tech research and development projects (863) [2012AA102003-4] ; major state basic research development program of China (973 Program) [2010CB833502] ; basic special funding from the central public welfare scientific research institutes [202-21] ; Chinese Ministry of Agriculture
作者邮箱	xinxp@sina.com
引用统计	被引频次：38[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/25843
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Agr Sci, Hulunber Grassland Ecosyst Res Stn, Lab Grassland Sci, Inst Agr Resources & Reg Planning, Beijing 100081, Peoples R China 2.Univ Western Australia, Sch Anim Biol, Nedlands, WA 6009, Australia 3.Univ Western Australia, Inst Agr, Nedlands, WA 6009, Australia 4.Gansu Agr Univ, Lanzhou 730070, Peoples R China 5.Chinese Acad Sci, Inst Bot, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Yan, Ruirui,Xin, Xiaoping,Yan, Yuchun,et al. Impacts of Differing Grazing Rates on Canopy Structure and Species Composition in Hulunber Meadow Steppe[J]. RANGELAND ECOLOGY & MANAGEMENT,2015,68(1):54-64.
APA	Yan, Ruirui.,Xin, Xiaoping.,Yan, Yuchun.,Wang, Xu.,Zhang, Baohui.,...&Li, Linghao.(2015).Impacts of Differing Grazing Rates on Canopy Structure and Species Composition in Hulunber Meadow Steppe.RANGELAND ECOLOGY & MANAGEMENT,68(1),54-64.
MLA	Yan, Ruirui,et al."Impacts of Differing Grazing Rates on Canopy Structure and Species Composition in Hulunber Meadow Steppe".RANGELAND ECOLOGY & MANAGEMENT 68.1(2015):54-64.

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