干旱区生态环境知识资源中心(Arid): Assessing the occurrence of soil improvement and its relationship to the dominant life form in the high mountains of Central Spain

Arid

DOI	10.1016/j.geodrs.2023.e00744
	Assessing the occurrence of soil improvement and its relationship to the dominant life form in the high mountains of Central Spain
	Ugarte, R. Magana; Gavilan, R. G.; Rubio, A.
通讯作者	Ugarte, RM
来源期刊	GEODERMA REGIONAL
ISSN	2352-0094
出版年	2024
卷号	36
英文摘要	Soil in mountainous regions is vital to the health and preservation of these unique and diverse ecosystems. In dry and semi-arid regions, vegetation patches play a crucial role in soil nutrient heterogeneity through continuous feedback with soils, acting as barriers to collect runoff water, sediments, and nutrients from bare soil regions. Soil amelioration, an enhancement of soil biogeochemical processes, results in the formation of fertility islands, the extent of which is contingent on the plant species in question, as well as nutrient dynamics and water availability. Here, we collected soil from across a two-peak altitudinal gradient in the Sierra de Guadarrama high-mountains, each peak featuring a different dominant vegetation type (herbs vs. cushion-like) to compare soil nutrients and properties between bare soil and vegetation-covered patches (microhabitats). Soil improvement was assessed in the microhabitats using the Relative Interaction Index (RII). Fertility islands were shown to be prevalent in highmountain ecosystems, as soil quality and properties were higher beneath vegetation-covered regions than bare soils. There was a difference in RIIs between the transects, with greater soil improvement in the cushiondominated transect than the herb-dominated one. Changes in nutrient levels were unrelated to patch successional stage, indicaing that plant generations may not shape the spatial variability of soil attributes. Instead, species variety or the presence of dominant clonal species increased soil nutrients and aggregate stability, highlighting the importance of root shape and high biomass in nutrient retention and soil reinforcement. Finally, our findings imply that the poor, shallow soils in the examined peaks, in comparison to other mountains, may account for the poor facilitative interactions. Competition for the scarce resources at these peaks may intensify as climate warms. Thus, while these plants may grow with minimum assistance under current climate circumstances, their associations may be especially vulnerable to climate change.
英文关键词	Mediterranean high-mountain Soil amelioration Vegetation patches Successional communities Elevation gradient
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:001150264200001
WOS关键词	STRESS-GRADIENT HYPOTHESIS ; POSITIVE INTERACTIONS ; PLANT INTERACTIONS ; NUTRIENT AVAILABILITY ; VEGETATION PATTERNS ; CUSHION PLANTS ; PATCH DYNAMICS ; FACILITATION ; COMMUNITIES ; COMPETITION
WOS类目	Soil Science
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/403927
推荐引用方式 GB/T 7714	Ugarte, R. Magana,Gavilan, R. G.,Rubio, A.. Assessing the occurrence of soil improvement and its relationship to the dominant life form in the high mountains of Central Spain[J],2024,36.
APA	Ugarte, R. Magana,Gavilan, R. G.,&Rubio, A..(2024).Assessing the occurrence of soil improvement and its relationship to the dominant life form in the high mountains of Central Spain.GEODERMA REGIONAL,36.
MLA	Ugarte, R. Magana,et al."Assessing the occurrence of soil improvement and its relationship to the dominant life form in the high mountains of Central Spain".GEODERMA REGIONAL 36(2024).