气候变化领域集成服务门户(CCPortal): Mountain treelines climb slowly despite rapid climate warming

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DOI	10.1111/geb.13214
	Mountain treelines climb slowly despite rapid climate warming
	Lu, Xiaoming; Liang, Eryuan; Wang, Yafeng; Babst, Flurin; Camarero, J. Julio
通讯作者	Liang, ER (通讯作者)
发表日期	2021
ISSN	1466-822X
EISSN	1466-8238
起始页码	305
结束页码	315
卷号	30 期号:1
英文摘要	Aim To better understand how climate change drives altitudinal treeline dynamics at large spatial scales. Location Northern Hemisphere. Time period 1901-2018. Major taxa studied Tree species that constitute alpine treelines. Methods We conducted a meta-analysis of annual treeline shift rates at 143 sites from 38 published studies. For each site, we calculated current change rates in annual or seasonal temperatures, precipitation and drought (standardized precipitation evapotranspiration index). We then evaluated relationships between treeline shift rates, and site characteristics and climate using standard and partial correlation analyses, as well as generalized linear models. These analyses were conducted at the hemispheric scale and for two geographic subsets of subarctic (north of 60 degrees N) and temperate regions (south of 60 degrees N). Results Treelines ascended at 88.8%, remained stable at 10.5% and descended at 0.7% of the sites. The mean hemispheric shift rate (0.354 m/year) was half of what would be expected from climate warming alone. Treeline shifts were significantly faster in subarctic than temperate regions. The precipitation effect was more important than temperature for predicting treeline shift rate. In the subarctic regions, autumn precipitation mostly determined treeline shift rates. In the temperate region, warmer temperatures and higher autumn precipitation accelerated shift rates, whereas wetter springs reduced them. Autumn precipitation and winter mean minimum temperature best explained the treeline shift rates across the Northern Hemisphere. Main conclusions A combination of thermal and hydrological factors drives treeline shift rates across the Northern Hemisphere, with precipitation assuming an important modifying role of the general temperature-driven treeline ascent. Regional treeline shift rates, therefore, co-depend on drying and wetting trends, which should be considered in future estimates of global change impacts on alpine ecosystems.
关键词	ROCKY-MOUNTAINS ALPINE TREELINE RANGE SHIFTS GROWTH TEMPERATURE RECRUITMENT ELEVATION DYNAMICS VARIABILITY MOISTURE
英文关键词	alpine biomes; climate trend; climate warming; Northern Hemisphere; precipitation; temperature; treeline shift rate
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Physical Geography
WOS类目	Ecology ; Geography, Physical
WOS记录号	WOS:000588719900001
来源期刊	GLOBAL ECOLOGY AND BIOGEOGRAPHY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260485
推荐引用方式 GB/T 7714	Lu, Xiaoming,Liang, Eryuan,Wang, Yafeng,et al. Mountain treelines climb slowly despite rapid climate warming[J]. 中国科学院青藏高原研究所,2021,30(1).
APA	Lu, Xiaoming,Liang, Eryuan,Wang, Yafeng,Babst, Flurin,&Camarero, J. Julio.(2021).Mountain treelines climb slowly despite rapid climate warming.GLOBAL ECOLOGY AND BIOGEOGRAPHY,30(1).
MLA	Lu, Xiaoming,et al."Mountain treelines climb slowly despite rapid climate warming".GLOBAL ECOLOGY AND BIOGEOGRAPHY 30.1(2021).