Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/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
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ISSN | 1040-6182 |
EISSN | 1873-4553 |
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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