Knowledge Resource Center for Ecological Environment in Arid Area
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![]() | |
通讯作者 | Han, Guodong |
来源期刊 | ECOLOGY AND EVOLUTION
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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. |
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