A 406-year non-growing-season precipitation reconstruction in the southeastern Tibetan Plateau

<p>Trees record climatic conditions during their growth, and tree rings serve as proxy to reveal the features of the historical climate of a region. In this study, we collected tree-ring cores of hemlock forest (<i>Tsuga forrestii</i>) from the northwestern Yunnan area of the sout...

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Autores principales:	M. Keyimu, Z. Li, B. Fu, G. Liu, F. Zeng, W. Chen, Z. Fan, K. Fang, X. Wu, X. Wang
Formato:	article
Lenguaje:	EN
Publicado:	Copernicus Publications 2021
Materias:	Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/dbd6fd4b752f4ff3b1aab710fdf4cfd3
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id	oai:doaj.org-article:dbd6fd4b752f4ff3b1aab710fdf4cfd3
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spelling	oai:doaj.org-article:dbd6fd4b752f4ff3b1aab710fdf4cfd32021-11-19T13:44:15ZA 406-year non-growing-season precipitation reconstruction in the southeastern Tibetan Plateau10.5194/cp-17-2381-20211814-93241814-9332https://doaj.org/article/dbd6fd4b752f4ff3b1aab710fdf4cfd32021-11-01T00:00:00Zhttps://cp.copernicus.org/articles/17/2381/2021/cp-17-2381-2021.pdfhttps://doaj.org/toc/1814-9324https://doaj.org/toc/1814-9332<p>Trees record climatic conditions during their growth, and tree rings serve as proxy to reveal the features of the historical climate of a region. In this study, we collected tree-ring cores of hemlock forest (<i>Tsuga forrestii</i>) from the northwestern Yunnan area of the southeastern Tibetan Plateau (SETP) and created a residual tree-ring width (TRW) chronology. An analysis of the relationship between tree growth and climate revealed that precipitation during the non-growing season (NGS) (from November of the previous year to February of the current year) was the most important constraining factor on the radial tree growth of hemlock forests in this region. In addition, the influence of NGS precipitation on radial tree growth was relatively uniform over time (1956–2005). Accordingly, we reconstructed the NGS precipitation over the period spanning from 1600–2005. The reconstruction accounted for 28.5 % of the actual variance during the common period of 1956–2005. Based on the reconstruction, NGS was extremely dry during the years 1656, 1694, 1703, 1736, 1897, 1907, 1943, 1982 and 1999. In contrast, the NGS was extremely wet during the years 1627, 1638, 1654, 1832, 1834–1835 and 1992. Similar variations of the NGS precipitation reconstruction series and Palmer Drought Severity Index (PDSI) reconstructions of early growing season from surrounding regions indicated the reliability of the present reconstruction. A comparison of the reconstruction with Climate Research Unit (CRU) gridded data revealed that our reconstruction was representative of the NGS precipitation variability of a large region in the SETP. Our study provides the first historical NGS precipitation reconstruction in the SETP which enriches the understanding of the long-term climate variability of this region. The NGS precipitation showed slightly increasing trend during the last decade which might accelerate regional hemlock forest growth.</p>M. KeyimuM. KeyimuM. KeyimuM. KeyimuZ. LiB. FuG. LiuF. ZengF. ZengF. ZengW. ChenZ. FanK. FangX. WuX. WangCopernicus PublicationsarticleEnvironmental pollutionTD172-193.5Environmental protectionTD169-171.8Environmental sciencesGE1-350ENClimate of the Past, Vol 17, Pp 2381-2392 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350
spellingShingle	Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 M. Keyimu M. Keyimu M. Keyimu M. Keyimu Z. Li B. Fu G. Liu F. Zeng F. Zeng F. Zeng W. Chen Z. Fan K. Fang X. Wu X. Wang A 406-year non-growing-season precipitation reconstruction in the southeastern Tibetan Plateau
description	<p>Trees record climatic conditions during their growth, and tree rings serve as proxy to reveal the features of the historical climate of a region. In this study, we collected tree-ring cores of hemlock forest (<i>Tsuga forrestii</i>) from the northwestern Yunnan area of the southeastern Tibetan Plateau (SETP) and created a residual tree-ring width (TRW) chronology. An analysis of the relationship between tree growth and climate revealed that precipitation during the non-growing season (NGS) (from November of the previous year to February of the current year) was the most important constraining factor on the radial tree growth of hemlock forests in this region. In addition, the influence of NGS precipitation on radial tree growth was relatively uniform over time (1956–2005). Accordingly, we reconstructed the NGS precipitation over the period spanning from 1600–2005. The reconstruction accounted for 28.5 % of the actual variance during the common period of 1956–2005. Based on the reconstruction, NGS was extremely dry during the years 1656, 1694, 1703, 1736, 1897, 1907, 1943, 1982 and 1999. In contrast, the NGS was extremely wet during the years 1627, 1638, 1654, 1832, 1834–1835 and 1992. Similar variations of the NGS precipitation reconstruction series and Palmer Drought Severity Index (PDSI) reconstructions of early growing season from surrounding regions indicated the reliability of the present reconstruction. A comparison of the reconstruction with Climate Research Unit (CRU) gridded data revealed that our reconstruction was representative of the NGS precipitation variability of a large region in the SETP. Our study provides the first historical NGS precipitation reconstruction in the SETP which enriches the understanding of the long-term climate variability of this region. The NGS precipitation showed slightly increasing trend during the last decade which might accelerate regional hemlock forest growth.</p>
format	article
author	M. Keyimu M. Keyimu M. Keyimu M. Keyimu Z. Li B. Fu G. Liu F. Zeng F. Zeng F. Zeng W. Chen Z. Fan K. Fang X. Wu X. Wang
author_facet	M. Keyimu M. Keyimu M. Keyimu M. Keyimu Z. Li B. Fu G. Liu F. Zeng F. Zeng F. Zeng W. Chen Z. Fan K. Fang X. Wu X. Wang
author_sort	M. Keyimu
title	A 406-year non-growing-season precipitation reconstruction in the southeastern Tibetan Plateau
title_short	A 406-year non-growing-season precipitation reconstruction in the southeastern Tibetan Plateau
title_full	A 406-year non-growing-season precipitation reconstruction in the southeastern Tibetan Plateau
title_fullStr	A 406-year non-growing-season precipitation reconstruction in the southeastern Tibetan Plateau
title_full_unstemmed	A 406-year non-growing-season precipitation reconstruction in the southeastern Tibetan Plateau
title_sort	406-year non-growing-season precipitation reconstruction in the southeastern tibetan plateau
publisher	Copernicus Publications
publishDate	2021
url	https://doaj.org/article/dbd6fd4b752f4ff3b1aab710fdf4cfd3
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A 406-year non-growing-season precipitation reconstruction in the southeastern Tibetan Plateau

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