干旱区生态环境知识资源中心(Arid): Grazing intensity enhances spatial aggregation of dominant species in a desert steppe

Arid

DOI	10.1002/ece3.5197
	Grazing intensity enhances spatial aggregation of dominant species in a desert steppe
	Lv, Shijie; Yan, Baolong; Wang, Zhongwu; Han, Guodong; Kang, Sarula
通讯作者	Han, Guodong
来源期刊	ECOLOGY AND EVOLUTION
ISSN	2045-7758
出版年	2019
卷号	9 期号:10 页码:6138-6147
英文摘要	Understanding how grazing activity drives plant community structure or the distribution of specific species in a community remains a major challenge in community ecology. The patchiness or spatial aggregation of specific species can be quantified by analyzing their relative coordinates in the community. Using variance and geostatistical analysis methods, we examined the quantitative characteristics and spatial distribution of Stipa breviflora in a desert steppe in northern China under four different grazing intensities (no grazing, NG, light grazing, LG, moderate grazing, MG, and heavy grazing, HG) at three small spatial scales (10 x 10 cm, 20 x 20 cm, 25 x 25 cm). We found that grazing significantly increased cover, density, and proportion in standing crop of S. breviflora, but decreased height. The spatial distribution of S. breviflora was strongly dependent upon the sampling unit and grazing intensity. The patchiness of S. breviflora reduced with sampling scale, and spatial distribution of S. breviflora was mainly determined by structural factors. The intact clusters of S. breviflora were more fragmented with increasing grazing intensity and offspring clusters spread out from the center of the parent plant. These findings suggest that spatial aggregation can enhance the ability of S. breviflora to tolerate grazing and that smaller isolated clusters are beneficial to the survival of this dominant species under heavy grazing.
英文关键词	geostatistics small scale spatial aggregation spatial distribution temperate grassland
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000470923500047
WOS关键词	CLONAL INTEGRATION ; COMPENSATORY GROWTH ; PLANT ; SOIL ; HETEROGENEITY ; DEFOLIATION ; VEGETATION ; HERBIVORY
WOS类目	Ecology ; Evolutionary Biology
WOS研究方向	Environmental Sciences & Ecology ; Evolutionary Biology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215264
作者单位	Inner Mongolia Agr Univ, Key Lab Grassland Management & Utilizat Inner Mon, Key Lab Forage Cultivat Proc & High Utilizat,Coll, Key Lab Grassland Resources,Minist Educ,Minist Ag, Hohhot 010011, Peoples R China
推荐引用方式 GB/T 7714	Lv, Shijie,Yan, Baolong,Wang, Zhongwu,et al. Grazing intensity enhances spatial aggregation of dominant species in a desert steppe[J],2019,9(10):6138-6147.
APA	Lv, Shijie,Yan, Baolong,Wang, Zhongwu,Han, Guodong,&Kang, Sarula.(2019).Grazing intensity enhances spatial aggregation of dominant species in a desert steppe.ECOLOGY AND EVOLUTION,9(10),6138-6147.
MLA	Lv, Shijie,et al."Grazing intensity enhances spatial aggregation of dominant species in a desert steppe".ECOLOGY AND EVOLUTION 9.10(2019):6138-6147.