干旱区生态环境知识资源中心(Arid): Analysis of soil water use by exotic and native vegetation in a semi-arid area and their associated interspecific competition

Arid

DOI	10.1016/j.scitotenv.2023.167066
	Analysis of soil water use by exotic and native vegetation in a semi-arid area and their associated interspecific competition
	Liu, Chenggong; Jia, Xiaoxu; Bai, Xiao; Shao, Ming'an
通讯作者	Jia, XX
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2023
卷号	905
英文摘要	The exotic vegetation used in dryland vegetation restoration projects is characterized by its fast-growing and deep-rooted system, which enables it to expedite the restoration of ecosystem functions and enhance biodiversity. However, the interspecific relationship between exotic and native vegetation and soil water uptake in these restored ecosystems remains unclear, limiting our ability to evaluate the succession process and sustainability of restored ecosystems. In this study, stable isotope techniques and a proportional similarity index were used to investigate soil water use strategies and interspecific relationships between exotic and native vegetation. The results showed significant differences between the soil water use strategies of both exotic and native vegetation between seasons and species, where the proportions of deep soil water (30-100 cm) used by exotic shrubs (Caragana korshinskii) and exotic grass (Medicago sativa) were significantly higher than those used by the cooccurring native grass (Stipa bungeana) (p < 0.05). As soil water storage declined, exotic vegetation increased its utilization of deep soil water, whereas native grasses relied more on surface water (0-10 cm). This suggests that deep-rooted exotic vegetation has greater adaptability and access to water resources than shallow-rooted native vegetation. However, a prolonged decline in soil water storage led to increased competition for surface soil water (0-30 cm) between the exotic and native vegetation. This may increase the risk of degradation of exotic vegetation, particularly in situations with lower soil water content in the deep layers. Overall, this study highlights the variation in water-use strategies and interspecies relationships between exotic and native vegetation and their implications for ecosystem succession, which provides valuable insights for developing future vegetation restoration strategies and managing restored ecosystems.
英文关键词	Vegetation restoration Water use strategy Hydrological niche Ecosystem succession Proportional similarity index
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001079626500001
WOS关键词	LOESS PLATEAU ; STABLE-ISOTOPES ; TREES ; DROUGHT ; CHINA ; DEEP ; EVAPORATION ; DELTA-O-18 ; HYPOTHESIS ; RESPONSES
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/398569
推荐引用方式 GB/T 7714	Liu, Chenggong,Jia, Xiaoxu,Bai, Xiao,et al. Analysis of soil water use by exotic and native vegetation in a semi-arid area and their associated interspecific competition[J],2023,905.
APA	Liu, Chenggong,Jia, Xiaoxu,Bai, Xiao,&Shao, Ming'an.(2023).Analysis of soil water use by exotic and native vegetation in a semi-arid area and their associated interspecific competition.SCIENCE OF THE TOTAL ENVIRONMENT,905.
MLA	Liu, Chenggong,et al."Analysis of soil water use by exotic and native vegetation in a semi-arid area and their associated interspecific competition".SCIENCE OF THE TOTAL ENVIRONMENT 905(2023).