Tree-ring-based assessments of drought variability during the past 400 years in the Tianshan mountains, arid Central Asia

In Central Asia, the frequency and severity of droughts have a strong impact on the climate and lives of people. Therefore, it is essential to explore climate change, especially its impacts on the cycle and extent of drought occurrence. To determine drought conditions, the Palmer drought severity in...

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Autores principales:	Ting Wang, Anming Bao, Wenqiang Xu, Ruide Yu, Qingling Zhang, Liangliang Jiang, Vincent Nzabarinda
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Palmer drought severity index Long term drought variability Tree-ring width Tianshan Mountains Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/10a4baa7e15a4adc8f1f67ba62384151
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id	oai:doaj.org-article:10a4baa7e15a4adc8f1f67ba62384151
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spelling	oai:doaj.org-article:10a4baa7e15a4adc8f1f67ba623841512021-12-01T04:51:42ZTree-ring-based assessments of drought variability during the past 400 years in the Tianshan mountains, arid Central Asia1470-160X10.1016/j.ecolind.2021.107702https://doaj.org/article/10a4baa7e15a4adc8f1f67ba623841512021-07-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X21003678https://doaj.org/toc/1470-160XIn Central Asia, the frequency and severity of droughts have a strong impact on the climate and lives of people. Therefore, it is essential to explore climate change, especially its impacts on the cycle and extent of drought occurrence. To determine drought conditions, the Palmer drought severity index (PDSI) is diffusely implemented and can be reconstructed using tree-ring chronologies. We collected Schrenk spruce (Picea schrenkiana) cores from six distinct areas in the Tianshan Mountains and used them to establish tree-ring chronologies. Correlation and reaction research revealed that the main impact on tree growth was humidity from previous years and the present growing season. To reconstruct the historical PDSI for the Tianshan Mountains, chronologies were applied. The reconstructed PDSI was considered to describe the climate change in the Tianshan Mountains because it captured severe drought events that were observed in other research findings. Furthermore, the spatial analysis results covered almost all of the Tianshan Mountains at 0.5° resolution. A large-scale drought event in the 1910s that was prevalent in the Tianshan Mountains was detected with tree rings. The extreme drought years of 1917, 1919, and 1944 detected on the chronologies were also specifically verified. A decadal analysis showed that the eastern and western Tianshan Mountains experienced continuous drought in the 1880s and during the 1810s ~ 1830s, the central and western Tianshan Mountains experienced continuous drought in the 1770s and 1640s, while it experienced a continuous wetting in the 1750s, and large-scale wetting occurred in Central Asia in the 2000s. This research offers a new perspective on the instability and spatial spread of drought in the Tianshan Mountains.Ting WangAnming BaoWenqiang XuRuide YuQingling ZhangLiangliang JiangVincent NzabarindaElsevierarticlePalmer drought severity indexLong term drought variabilityTree-ring widthTianshan MountainsEcologyQH540-549.5ENEcological Indicators, Vol 126, Iss , Pp 107702- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Palmer drought severity index Long term drought variability Tree-ring width Tianshan Mountains Ecology QH540-549.5
spellingShingle	Palmer drought severity index Long term drought variability Tree-ring width Tianshan Mountains Ecology QH540-549.5 Ting Wang Anming Bao Wenqiang Xu Ruide Yu Qingling Zhang Liangliang Jiang Vincent Nzabarinda Tree-ring-based assessments of drought variability during the past 400 years in the Tianshan mountains, arid Central Asia
description	In Central Asia, the frequency and severity of droughts have a strong impact on the climate and lives of people. Therefore, it is essential to explore climate change, especially its impacts on the cycle and extent of drought occurrence. To determine drought conditions, the Palmer drought severity index (PDSI) is diffusely implemented and can be reconstructed using tree-ring chronologies. We collected Schrenk spruce (Picea schrenkiana) cores from six distinct areas in the Tianshan Mountains and used them to establish tree-ring chronologies. Correlation and reaction research revealed that the main impact on tree growth was humidity from previous years and the present growing season. To reconstruct the historical PDSI for the Tianshan Mountains, chronologies were applied. The reconstructed PDSI was considered to describe the climate change in the Tianshan Mountains because it captured severe drought events that were observed in other research findings. Furthermore, the spatial analysis results covered almost all of the Tianshan Mountains at 0.5° resolution. A large-scale drought event in the 1910s that was prevalent in the Tianshan Mountains was detected with tree rings. The extreme drought years of 1917, 1919, and 1944 detected on the chronologies were also specifically verified. A decadal analysis showed that the eastern and western Tianshan Mountains experienced continuous drought in the 1880s and during the 1810s ~ 1830s, the central and western Tianshan Mountains experienced continuous drought in the 1770s and 1640s, while it experienced a continuous wetting in the 1750s, and large-scale wetting occurred in Central Asia in the 2000s. This research offers a new perspective on the instability and spatial spread of drought in the Tianshan Mountains.
format	article
author	Ting Wang Anming Bao Wenqiang Xu Ruide Yu Qingling Zhang Liangliang Jiang Vincent Nzabarinda
author_facet	Ting Wang Anming Bao Wenqiang Xu Ruide Yu Qingling Zhang Liangliang Jiang Vincent Nzabarinda
author_sort	Ting Wang
title	Tree-ring-based assessments of drought variability during the past 400 years in the Tianshan mountains, arid Central Asia
title_short	Tree-ring-based assessments of drought variability during the past 400 years in the Tianshan mountains, arid Central Asia
title_full	Tree-ring-based assessments of drought variability during the past 400 years in the Tianshan mountains, arid Central Asia
title_fullStr	Tree-ring-based assessments of drought variability during the past 400 years in the Tianshan mountains, arid Central Asia
title_full_unstemmed	Tree-ring-based assessments of drought variability during the past 400 years in the Tianshan mountains, arid Central Asia
title_sort	tree-ring-based assessments of drought variability during the past 400 years in the tianshan mountains, arid central asia
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/10a4baa7e15a4adc8f1f67ba62384151
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Tree-ring-based assessments of drought variability during the past 400 years in the Tianshan mountains, arid Central Asia

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