Arid
DOI10.1002/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
ISSN2045-7758
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
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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.
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