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Xinyue He; Xin Jiang; Dominick V. Spracklen; Dominick V. Spracklen
Harvested from ORCID Public Data FileDominick V. Spracklen in OpenAIRE Joseph Holden; +7 AuthorsJoseph Holden
Harvested from ORCID Public Data FileJoseph Holden in OpenAIRE Xinyue He; Xin Jiang; Dominick V. Spracklen; Dominick V. Spracklen
Harvested from ORCID Public Data FileDominick V. Spracklen in OpenAIRE Joseph Holden; Joseph Holden
Harvested from ORCID Public Data FileJoseph Holden in OpenAIRE Eryuan Liang; Eryuan Liang
Harvested from ORCID Public Data FileEryuan Liang in OpenAIRE Hongyan Liu; Chongyang Xu;Hongyan Liu
Harvested from ORCID Public Data FileHongyan Liu in OpenAIRE Jianhui Du; Jianhui Du
Harvested from ORCID Public Data FileJianhui Du in OpenAIRE Kai Zhu; Paul R. Elsen; Paul R. Elsen
Harvested from ORCID Public Data FilePaul R. Elsen in OpenAIRE Zhenzhong Zeng; Zhenzhong Zeng
Harvested from ORCID Public Data FileZhenzhong Zeng in OpenAIREAbstractMountain treelines are thought to be sensitive to climate change. However, how climate impacts mountain treelines is not yet fully understood as treelines may also be affected by other human activities. Here, we focus on “closed‐loop” mountain treelines (CLMT) that completely encircle a mountain and are less likely to have been influenced by human land‐use change. We detect a total length of ~916,425 km of CLMT across 243 mountain ranges globally and reveal a bimodal latitudinal distribution of treeline elevations with higher treeline elevations occurring at greater distances from the coast. Spatially, we find that temperature is the main climatic driver of treeline elevation in boreal and tropical regions, whereas precipitation drives CLMT position in temperate zones. Temporally, we show that 70% of CLMT have moved upward, with a mean shift rate of 1.2 m/year over the first decade of the 21st century. CLMT are shifting fastest in the tropics (mean of 3.1 m/year), but with greater variability. Our work provides a new mountain treeline database that isolates climate impacts from other anthropogenic pressures, and has important implications for biodiversity, natural resources, and ecosystem adaptation in a changing climate.
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