A tree-ring based drought reconstruction (AD 1760-2010) for the Loess Plateau and its possible driving mechanisms

被引:28
作者
Chen, Feng
Yuan, Yujiang
Zhang, Ruibo
Qin, Li
机构
[1] China Meteorol Adm, Inst Desert Meteorol, Key Lab Tree Ring Phys & Chem Res, Urumqi 830002, Xinjiang, Peoples R China
[2] China Meteorol Adm, Inst Desert Meteorol, Lab Tree Ring Ecol, Urumqi 830002, Xinjiang, Peoples R China
关键词
Dendrochronology; PDSI; Asian summer monsoon; Loess Plateau; NORTH-CENTRAL CHINA; ASIAN MONSOON; PRECIPITATION; VARIABILITY; LINKAGES; IMPACTS; INDEX; PART;
D O I
10.1016/j.gloplacha.2014.08.008
中图分类号
P9 [自然地理学];
学科分类号
0705 ; 070501 ;
摘要
We have developed a 272-year ring-width chronology of Chinese pine (Pinus tabulaeformis) growing in the Huanglong Mountains, North China. Climatic response analyses revealed that mean January-July Palmer drought severity index (PDSI) has positive effect on the radial growth of pine trees. Based on the relationships, the mean January-July PDSI was reconstructed for the period from 1760 to 2010. The percentage of variance in the data explained by the reconstruction was 41% during the calibration period of 1950-2010. Spatial correlation analyses between the PDSI reconstruction and gridded PDSI data show that the PDSI reconstruction captures regional drought variations over the environmentally-sensitive area linked to the East Asian summer monsoon. Relatively wet periods are identified for AD 1766-1781, 1795-1804, 1811-1821, 1838-1859, 1884-1889, 1909-1914, 1937-1977 and 2003-2008. Dry conditions prevailed during AD 1760-1765, 1782-1794, 1805-1810, 1822-1837, 1860-1883, 1890-1908, 1915-1936, 1978-2002 and 2009-now. There is a reasonable agreement with dry/wet periods previously estimated from tree-ring data of the Kongtong Mountains of the Loess Plateau. Spatial correlation analyses with sea surface temperature in the Pacific Ocean and tropical Indian Ocean indicated that the Asian summer monsoon circulations play a role in modulating drought variations in the study area whereas the effects of the Pacific Decadal Oscillation are relatively strong. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码:82 / 88
页数:7
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