Struggle zone: alpine shrubs are limited in the Southern Urals by an advancing treeline and insufficient snow depth
作者机构：Institute of Plant and Animal EcologyUral BranchRussian Academy of SciencesSt.8 Marta 202EkaterinburgRussia 6201442 Institute of Ecology and Earth SciencesUniversity of TartuSt.Liivi 250409 TartuEstonia Pyrenean Ecology InstituteSt.Montañana 100550059 SaragossaSpain
出 版 物：《Journal of Forestry Research》 (林业研究（英文版）)
年 卷 期：2024年第35卷第6期
页 面：1-12页
核心收录：
学科分类：09[农学] 0903[农学-农业资源与环境]
基 金：supported by the RSF(Grant number:24-27-00338)
主 题：Juniperaceae Juniperus sibirica Snowpack cover Shrubline Shrub-tree competition Southern Urals Tree line
摘 要：In recent decades,the rapid climate warming in polar and alpine regions has been accompanied by an expan-sion of shrub ***,little is known about how changes in shrub distribution will change as the distribution of tree species and snow cover changes as temperatures *** this work,we analyzed the main environmental factors influencing the distribution and structure of Juniperus sibir-ica,the most common shrub species in the Southern Ural *** mapping and digital elevation models,we demonstrated that *** forms a well-defined vegeta-tion belt mainly between 1100 and 1400 m *** this zone,the abundance and cover of *** are influenced by factors such as rockiness,slope steepness,water regime and tree(Picea obovata)*** analysis of data spanning the past 9 years revealed an upward shift in the distribution of *** with a decrease in its *** primary limit-ing factors for the distribution of *** were the removal of snow cover by strong winter winds and competition with *** a consequence of climatic changes,the tree line and forest limit have shifted upward,further restricting the distribution of *** to higher elevations where com-petition for light with trees is reduced and snow cover is sufficiently deep.
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