干旱区生态环境知识资源中心(Arid): The joint effects of resource stress and grazing on plant-plant interactions in alpine meadows on the eastern Qinghai-Tibetan Plateau

Arid

DOI	10.1093/jpe/rtac062
	The joint effects of resource stress and grazing on plant-plant interactions in alpine meadows on the eastern Qinghai-Tibetan Plateau
	Mo, Li; Yang, Hao; Luo, Peng; Mou, Cheng-Xiang; Wang, Jun
通讯作者	Yang, H ; Luo, P
来源期刊	JOURNAL OF PLANT ECOLOGY
ISSN	1752-9921
EISSN	1752-993X
出版年	2023
卷号	16 期号:2
英文摘要	The stress gradient hypothesis (SGH) proposes that the frequency of positive interactions among plants is increased with stress. However, in alpine meadow ecosystems, the joint effects of herbivore grazing and resource stress on plant-plant interactions remain poorly understood. By investigating the spatial associations of two dominant, widely distributed species-Carex praeclara (unpalatable) and Carum carvi (palatable)-we explored changes in plant-plant interactions at three desertification levels (light, moderate and severe) under grazed and ungrazed conditions to test the generality of the SGH in the desertified alpine meadows on the eastern Qinghai-Tibetan Plateau. Without grazing disturbance, intraspecific interactions of C. praeclara and C. carvi changed from positive to negative, while their interspecific interactions shifted from negative to positive along the desertification gradient from light to severe level. However, intraspecific interactions of C. carvi under grazing remained neutral at all desertification levels, while the net interspecific interactions between these species changed from competitive to facilitative under moderate stress. But, the positive interactions collapsed under severe stress, which is inconsistent with the SGH prediction. Our results reinforced the evidence that livestock grazing strongly influences the balance of intra- and interspecific interactions along the stress gradients in the alpine ecosystems.
英文关键词	alpine meadow desertification gradients grazing intra- and interspecific interactions Qinghai-Tibetan Plateau stress gradient hypothesis
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000926269100006
WOS关键词	POSITIVE INTERACTIONS ; POPULATION-DYNAMICS ; SPATIAL-PATTERNS ; FACILITATION ; DESERTIFICATION ; COMPETITION ; VEGETATION ; DIVERSITY ; INCREASE ; SOIL
WOS类目	Plant Sciences ; Ecology ; Forestry
WOS研究方向	Plant Sciences ; Environmental Sciences & Ecology ; Forestry
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/397506
推荐引用方式 GB/T 7714	Mo, Li,Yang, Hao,Luo, Peng,et al. The joint effects of resource stress and grazing on plant-plant interactions in alpine meadows on the eastern Qinghai-Tibetan Plateau[J],2023,16(2).
APA	Mo, Li,Yang, Hao,Luo, Peng,Mou, Cheng-Xiang,&Wang, Jun.(2023).The joint effects of resource stress and grazing on plant-plant interactions in alpine meadows on the eastern Qinghai-Tibetan Plateau.JOURNAL OF PLANT ECOLOGY,16(2).
MLA	Mo, Li,et al."The joint effects of resource stress and grazing on plant-plant interactions in alpine meadows on the eastern Qinghai-Tibetan Plateau".JOURNAL OF PLANT ECOLOGY 16.2(2023).