干旱区生态环境知识资源中心(Arid): 放牧强度对短花针茅荒漠草原植物群落组成及种间关系的影响

Arid

	放牧强度对短花针茅荒漠草原植物群落组成及种间关系的影响
其他题名	Effects of Grazing Intensity Community Composition and Inter-species Relationships of Stipa breviflora Desert Steppe, Inner Mongolia, China
	王琪; 张峰; 赵萌莉; 张新宇; 张军
来源期刊	生态环境学报
ISSN	1674-5906
出版年	2021
卷号	30 期号:10 页码:1961-1967
中文摘要	探究不同放牧强度对短花针茅荒漠草原群落植物组成以及种间关系的影响,可为短花针茅荒漠草原制定合理科学的放牧制度提供理论依据。将短花针茅荒漠草原作为研究对象,以围封为对照(CK),设置轻度(LG)、中度(MG)及重度放牧(HG)处理进行植物群落调查,对总体关联指数(VR)和种间联结系数进行分析,结果表明:(1)CK、LG、MG和HG样地中物种数分别为39、34、32、25,表明植物物种数随放牧强度增加而减少;(2)CK和LG的VR指数小于1,MG和HG的VR指数大于1,围封和轻度放牧处理下植物群落整体呈负关联,表现为竞争关系,中度放牧和重度放牧处理下群落整体呈正关联,表现为亲和关系;(3)短花针茅(Stipa breviflora)-无芒隐子草(Cleistogenes songorica)、冷蒿(Artemisia frigida)-银灰旋花(Convolvulus ammannii)在CK样地中呈正关联,在MG样地中呈负关联,在LG、HG样地中无关联;无芒隐子草-木地肤(Kochia prostrata)在CK样地中呈负关联,在MG、HG样地中呈正关联,在LG样地中无关联;短花针茅-木地肤、无芒隐子草-银灰旋花在MG样地中呈正关联,在CK、LG及HG样地中无关联,说明中度放牧可以使物种间的关系由负关联转变为正关联,也可使物种间的关系由正关联转变为负关联。该文可为短花针茅荒漠草原种间竞争、群落稳定性以及生态位的研究提供重要参考。
英文摘要	We conducted an experiment to study the effects of different grazing intensities on the community plant composition and interspecific relationships in the Stipa breviflora desert steppe, providing a reasonable and scientific theoretical basis.In this study, we took enclosure(CK)as control and set different grazing treatments(light grazing(LG), moderate grazing(MG)and heavy grazing(HG))to analyze the plant community, variance ration(VR)and inter-species association coefficient, and the results showed that, species number in the CK, LG, MG, and HG treatments were 39, 34, 32, and 25, respectively, indicating that plant species number decreased with the increase of grazing intensity.Besides, variance ration in CK and LG was less than 1, while it was more than 1 in MG and HG.Further, the whole plant community was negatively correlated in CK and LG, showing a competitive relationship, while the whole plant community was positively correlated in MG and HG, showing an affinity relationship.Importantly, there had a positive association between Stipa breviflora and Cleistogenes songorica and between Artemisia frigida and Convolvulus ammannii in CK, but showed a negative correlation in MG.Likewise, there had a negative correlation between Cleistogenes songorica and Kochia prostrata in CK, but had a positive association in MG and HG.However, it had a positive association between Stipa breviflora and Kochia prostrata and between Cleistogenes songorica and Convolvulus ammannii in MG, indicating that moderate grazing could change the inter-species relationship from negative to positive association, and the opposite as the same.Finally, this study could provide important reference for the study of interspecific competition, community stability and ecological niche in the Stipa breviflora desert steppe.
中文关键词	放牧强度 ; 短花针茅 ; 荒漠草原 ; 群落组成 ; 种间关联 ; 总体关联指数
英文关键词	grazing intensity Stipa breviflora desert steppe community composition inter-species relationships variance ration(VR)
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:7116170
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/377832
作者单位	王琪, 内蒙古农业大学草原与资源环境学院, 呼和浩特, 内蒙古 010010, 中国.; 张峰, 内蒙古农业大学草原与资源环境学院, 呼和浩特, 内蒙古 010010, 中国.; 赵萌莉, 内蒙古农业大学草原与资源环境学院, 呼和浩特, 内蒙古 010010, 中国.; 张新宇, 内蒙古农业大学理学院, 呼和浩特, 内蒙古 010010, 中国.; 张军, 内蒙古农业大学理学院, 呼和浩特, 内蒙古 010010, 中国.
推荐引用方式 GB/T 7714	王琪,张峰,赵萌莉,等. 放牧强度对短花针茅荒漠草原植物群落组成及种间关系的影响[J],2021,30(10):1961-1967.
APA	王琪,张峰,赵萌莉,张新宇,&张军.(2021).放牧强度对短花针茅荒漠草原植物群落组成及种间关系的影响.生态环境学报,30(10),1961-1967.
MLA	王琪,et al."放牧强度对短花针茅荒漠草原植物群落组成及种间关系的影响".生态环境学报 30.10(2021):1961-1967.