Level of habitat fragmentation determines its non-linear relationships with plant species richness, frequency and density at desertified grasslands in Inner Mongolia, China

IMR OpenIR

	Level of habitat fragmentation determines its non-linear relationships with plant species richness, frequency and density at desertified grasslands in Inner Mongolia, China
其他题名	Level of habitat fragmentation determines its non-linear relationships with plant species richness,frequency and density at desertified grasslands in Inner Mongolia,China
	Liu Zhimin 1; Shou Wenkai 1; Qian Jianqiang 1; Wu Jing 1; Alberto Busso Carlos 3; Hou Xianzhang 2
	2018
发表期刊	JOURNAL OF PLANT ECOLOGY
ISSN	1752-9921
卷号	11 期号:6 页码:866-876
摘要	Aims
其他摘要	Aims This study aimed to examine the changes in plant species richness,frequency and density along a habitat fragmentation gradient (with varied degrees of habitat fragmentation DHFs) in a desertified grassland of Horqin Sandy Land,northeastern Inner Mongolia,China.Methods In this study,six landscape plots (500×500 m each) along a habitat fragmentation gradient were established.A new fragmentation index was formulated to study the effects of habitat fragmentation on biodiversity indices (species richness,frequency and density).Regression analyses (linear-or non-linear regression) were conducted to assess the changes in species richness,frequency and density along the habitat fragmentation gradient at plant community,functional group and species scales,respectively.Important Findings There was a non-linear relationship (following a quadratic function) between total species richness and the DHF.Total species richness reached its peak when the DHF was 0.2,beyond which species richness decreased along the fragmentation gradient.Plant functional groups showed their specific responses to habitat fragmentation,and some non-linear relationships and thresholds existed.The relative richness of rare species also showed a non-linear response to habitat fragmentation,with the threshold being DHF=0.6.Species became rarer (both some common species and rare species) with the intensifying habitat fragmentation.Our study demonstrates the importance of the non-linear relationships and plant functional groups in exploring the effects of habitat fragmentation on biodiversity and implementing effective biological conservation in sand dunes.
关键词	EFFECTIVE MESH SIZE LANDSCAPE FRAGMENTATION FUNCTIONAL TRAITS DUNE FIELD DISTURBANCE DISPERSAL DIVERSITY RESPONSES INVASION COMMUNITIES density frequency functional group habitat fragmentation rare species species richness
收录类别	CSCD
语种	英语
资助项目	[National Natural Science Foundation of China] ; [Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China]
CSCD记录号	CSCD:6406984
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/147348
专题	中国科学院金属研究所
作者单位	1.中国科学院 2.中国科学院金属研究所 3.University Nacl Sur, CONICET, CERZOS, Dept Agron, RA-8000 Bahia Blanca, Buenos Aires, Argentina
推荐引用方式 GB/T 7714	Liu Zhimin,Shou Wenkai,Qian Jianqiang,et al. Level of habitat fragmentation determines its non-linear relationships with plant species richness, frequency and density at desertified grasslands in Inner Mongolia, China[J]. JOURNAL OF PLANT ECOLOGY,2018,11(6):866-876.
APA	Liu Zhimin,Shou Wenkai,Qian Jianqiang,Wu Jing,Alberto Busso Carlos,&Hou Xianzhang.(2018).Level of habitat fragmentation determines its non-linear relationships with plant species richness, frequency and density at desertified grasslands in Inner Mongolia, China.JOURNAL OF PLANT ECOLOGY,11(6),866-876.
MLA	Liu Zhimin,et al."Level of habitat fragmentation determines its non-linear relationships with plant species richness, frequency and density at desertified grasslands in Inner Mongolia, China".JOURNAL OF PLANT ECOLOGY 11.6(2018):866-876.