干旱区生态环境知识资源中心(Arid): Saltcedar (Tamarix mascatensis) inhibits growth and spatial distribution of eshnan (Seidlitzia rosmarinus) by enrichment of soil salinity in a semi-arid desert

Arid

DOI	10.1007/s11104-019-04064-3
	Saltcedar (Tamarix mascatensis) inhibits growth and spatial distribution of eshnan (Seidlitzia rosmarinus) by enrichment of soil salinity in a semi-arid desert
	Erfanifard, Yousef 1,2; Khosravi, Elaheh 2
通讯作者	Erfanifard, Yousef
来源期刊	PLANT AND SOIL
ISSN	0032-079X
EISSN	1573-5036
出版年	2019
卷号	440 期号:1-2 页码:219-231
英文摘要	Background and aims Understanding the species associations in dryland sparse and patchy vegetation requires information on species intra- and interspecific interactions and their response to environmental heterogeneity. To better understand the coexistence mechanisms of saltcedar (Tamarix mascatensis) and eshnan (Seidlitzia rosmarinus) in central deserts of Iran, we analysed the spatial distributions and soil chemical properties of their mixed stands. Methods We applied uni- and bivariate point process statistics together with mark correlation functions and soil information under the species canopy and in the interspaces to evaluate plant-to-plant interactions. Results Tamarix and Seidlitzia were both highly aggregated in conspecific clusters, and the species were significantly segregated at small spatial scales. Interestingly, we found that the density of conspecific neighbours in Tamarix clusters was higher than Seidlitzia (approximately 9 times more), although the mean density of Tamarix (29.4 shrubs ha(-1)) was lower than Seidlitzia (357.3 shrubs ha(-1)). For both species, intraspecific interactions had negative effects on their size, which was more evident in Tamarix. Our results showed that the size of Seidlitzia was strongly and negatively depended on the proximity of nearby Tamarix. Additionally, the two species improved soil chemical properties and moisture under their canopy compared to bare soil; however, soil salinity under Tamarix (24.29 dS m(-1)) was higher than Seidlitzia (1.68 dS m(-1)). Conclusions According to the segregated spatial pattern of the species and negative effects of Tamarix neighbourhood on Seidlitzia growth, we suggest that high soil salinity beneath Tamarix canopy likely reduces interspecific interactions between the two species and affects Seidlitzia growth. Furthermore, our results indicate no spatial mixture of Tamarix and Seidlitzia, contrary to our expectations, although we still encourage further research on the co-occurrence of the species in the region.
英文关键词	Plant-to-plant interactions Environmental heterogeneity Spatial point pattern Mark correlation function
类型	Article
语种	英语
国家	Iran
收录类别	SCI-E
WOS记录号	WOS:000475977600015
WOS关键词	NATIVE POPULUS ; RAMOSISSIMA ; PATTERNS ; COMPETITION ; HETEROGENEITY ; ESTABLISHMENT ; CHINENSIS ; WATER ; RIVER ; COMMUNITIES
WOS类目	Agronomy ; Plant Sciences ; Soil Science
WOS研究方向	Agriculture ; Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218000
作者单位	1.Univ Tehran, Fac Geog, Dept Remote Sensing & GIS, Tehran, Iran; 2.Shiraz Univ, Coll Agr, Dept Nat Resources & Environm, Shiraz 71441, Iran
推荐引用方式 GB/T 7714	Erfanifard, Yousef,Khosravi, Elaheh. Saltcedar (Tamarix mascatensis) inhibits growth and spatial distribution of eshnan (Seidlitzia rosmarinus) by enrichment of soil salinity in a semi-arid desert[J],2019,440(1-2):219-231.
APA	Erfanifard, Yousef,&Khosravi, Elaheh.(2019).Saltcedar (Tamarix mascatensis) inhibits growth and spatial distribution of eshnan (Seidlitzia rosmarinus) by enrichment of soil salinity in a semi-arid desert.PLANT AND SOIL,440(1-2),219-231.
MLA	Erfanifard, Yousef,et al."Saltcedar (Tamarix mascatensis) inhibits growth and spatial distribution of eshnan (Seidlitzia rosmarinus) by enrichment of soil salinity in a semi-arid desert".PLANT AND SOIL 440.1-2(2019):219-231.