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	Moisture stress of a hydrological year on tree growth in the Tibetan Plateau and surroundings
	Fang K. Y.; Frank, D.; Zhao, Y.; Zhou, F. F.; Seppa, H.
	2015
关键词	tree ring boosted regression trees nonlinearity climate change drought Tibetan Plateau high-resolution paleoclimatology artificial neural-networks precipitation variation last millennium ring record climate china reconstruction temperature variability
英文摘要	Investigations of climate-growth interactions can shed light on the response of forest growth to climate change and the dendroclimatic reconstructions. However, most existing studies in the climatically important Tibetan Plateau (TP) and surrouding regions focus on linear growth responses to environmental variation. Herein we investigated both the linear and the nonlinear climate-growth interactions for 152 tree-ring chronologies in the TP and vicinity. Weintroduced the boosted regression tree (BRT) technique to study the nonlinear climate-growth relationships by pooling several sites with similar climate-growth relationships to mitigate potential biases due to the shortness of the instrumental records. Across most of the TP and surroundings, tree growth is stressed by drought. The warming induced drought has been evidenced by the strong interactions between temperature and precipitation in the BRT analyses. The drought stress on forest growth is particularly conspicuous for a hydrological year over much of the Northern TP and surroundings. The BRT analyses indicate the compensation effect of moisture prior to the growing season for the moisture deficit in the early growing season in May to July, when most of the ring-width formation occurs.
出处	Environmental Research Letters
卷	10
期	3
收录类别	SCI
语种	英语
ISSN号	1748-9326
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/38608]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Fang K. Y.,Frank, D.,Zhao, Y.,et al. Moisture stress of a hydrological year on tree growth in the Tibetan Plateau and surroundings. 2015.

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