Arid
DOI10.1016/j.quaint.2017.08.029
Tree-ring based reconstruction of winter drought since 1767 CE from Uttarkashi, Western Himalaya
Shekhar, Mayank; Pal, Ashish K.; Bhattacharyya, Amalava; Ranhotra, Parminder S.; Roy, Ipsita
通讯作者Ranhotra, Parminder S.
来源期刊QUATERNARY INTERNATIONAL
ISSN1040-6182
EISSN1873-4553
出版年2018
卷号479页码:58-69
英文摘要

This article presents a reconstruction of winter (November March) drought by using the Standardized Precipitation Evapotranspiration Index (SPEI) based on the tree-ring width data of Pinus roxburghii (Chir pine) growing near Uttarkashi, Garhwal region, western Himalaya. This is based on a significant negative correlation between growth of Chir pine and SPEI of November March (N-M) months. This relationship might be linked with the low rate of photosynthesis during low or freezing temperature when roots unable to take soil moisture, an analogous to drought situation as in the cold desert. The reconstructed winter SPEI record extends from 1767 to 2013 CE. It explains 30.5% of the variance for the calibration period (1903-2013 CE). The regression model was tested using Correlation Coefficient (r), Coefficient of Determination (R-2), Reduction of Error (RE), Coefficient of efficiency (CE) and Durbin-Watson test (DW). The extended SPEI time series has revealed several intervals of high and low intensity drought since the 17th century. There is also a linkage between (N-M) months SPEI and Western Disturbance (WD). This connection indicates that the WD may have a role in modulating droughts in the Indian region. (C) 2017 Elsevier Ltd and INQUA. All rights reserved.


英文关键词Tree-ring Pinus roxburghii Western Himalaya SPEI Western disturbance
类型Article
语种英语
国家India
收录类别SCI-E
WOS记录号WOS:000433225600009
WOS关键词SEVERITY INDEX ; SIMILAR-TO-300 YEARS ; MONSOON FAILURE ; NORTHWEST CHINA ; UNITED-STATES ; VARIABILITY ; INDIA ; PRECIPITATION ; GROWTH ; PERSPECTIVE
WOS类目Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向Physical Geography ; Geology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/212458
作者单位Birbal Sahni Inst Palaeosci, 53 Univ Rd, Lucknow 226007, Uttar Pradesh, India
推荐引用方式
GB/T 7714
Shekhar, Mayank,Pal, Ashish K.,Bhattacharyya, Amalava,et al. Tree-ring based reconstruction of winter drought since 1767 CE from Uttarkashi, Western Himalaya[J],2018,479:58-69.
APA Shekhar, Mayank,Pal, Ashish K.,Bhattacharyya, Amalava,Ranhotra, Parminder S.,&Roy, Ipsita.(2018).Tree-ring based reconstruction of winter drought since 1767 CE from Uttarkashi, Western Himalaya.QUATERNARY INTERNATIONAL,479,58-69.
MLA Shekhar, Mayank,et al."Tree-ring based reconstruction of winter drought since 1767 CE from Uttarkashi, Western Himalaya".QUATERNARY INTERNATIONAL 479(2018):58-69.
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