Himalaya to Hengduan: dynamics of alpine treelines under climate change

doi:10.1007/s10113-023-02153-9

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	Himalaya to Hengduan: dynamics of alpine treelines under climate change
	Tiwari,Achyut; Adhikari,Arjun; Fan,Ze-Xin; Li,Shu-Feng; Jump,Alistair S.; Zhou,Zhe-Kun
	2023
发表期刊	REGIONAL ENVIRONMENTAL CHANGE
ISSN	1436-378X
卷号	23 期号:4 页码:157
摘要	Alpine treelines serve as vital indicators of the impacts of climate change on tree growth and forest distribution. They offer valuable insights into how shifting temperature and precipitation patterns affect ecosystems in treeline ecotones. Analyzing the age structure of tree stands at treelines provides a glimpse into how different generations of trees have responded to changing environmental conditions and aids in predicting future changes. Moreover, studying the spatiotemporal distribution of tree species at treelines helps us gain a comprehensive understanding of how forests adapt to climate variations. Tree rings at treelines can elucidate the climatic factors that limit tree growth and establishment patterns. Mountain environments, characterized by low temperatures at higher elevations, create constraints on tree growth. However, the intricate interplay between temperature and water availability, driven by precipitation gradients, means that predicting treeline shifts based solely on temperature changes is overly simplistic and may not fully reflect the complex reality. To assess the potential for such interactions, we contrasted the dendroecological performance of different tree species (Abies spectabilis, Betula utilis, Abies georgei, and Larix potaninii) in the Trans-Himalayan zone, Nepal, and Hengduan Mountains, China. We reconstructed the stand age structure by using dendrochronology. Statistical determination of climate-growth responses demonstrated that treeline is moisture-sensitive in the Himalaya and temperature- as well as moisture-sensitive in the Hengduan region. There was abundant seedling recruitment with consistent range shift of A. spectabilis and B. utilis treelines in Nepal, and lower seedling recruitment with lower shifting rates of treelines of A. georgei and L. potaninii in the Hengduan Mountains. We identify both moisture and temperature as critical environmental factors in determining tree radial growth and treeline response to climate. However, modifying factors such as microhabitat conditions and biotic interactions are also highly important to improve the accuracy of treeline dynamics.
关键词	Trans-Himalaya Hengduan Mountain Treeline Timberline Ecotone Range shift Limiting factor Regeneration TREE-RING ALTITUDINAL GRADIENT TIANSHAN MOUNTAINS ABIES-SPECTABILIS WESTERN HIMALAYA TIBETAN PLATEAU GROWTH TEMPERATURE PRECIPITATION VARIABILITY
DOI	10.1007/s10113-023-02153-9
WOS记录号	WOS:001101423900001
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/74806
专题	中国科学院昆明植物研究所
推荐引用方式 GB/T 7714	Tiwari,Achyut,Adhikari,Arjun,Fan,Ze-Xin,et al. Himalaya to Hengduan: dynamics of alpine treelines under climate change[J]. REGIONAL ENVIRONMENTAL CHANGE,2023,23(4):157.
APA	Tiwari,Achyut,Adhikari,Arjun,Fan,Ze-Xin,Li,Shu-Feng,Jump,Alistair S.,&Zhou,Zhe-Kun.(2023).Himalaya to Hengduan: dynamics of alpine treelines under climate change.REGIONAL ENVIRONMENTAL CHANGE,23(4),157.
MLA	Tiwari,Achyut,et al."Himalaya to Hengduan: dynamics of alpine treelines under climate change".REGIONAL ENVIRONMENTAL CHANGE 23.4(2023):157.

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