XTBG OpenIR  > 2012年后新成立研究组
Drought (scPDSI) reconstruction of trans-Himalayan region of central Himalaya using Pinus wallichiana tree-rings
Gaire, Narayan Prasad1,2; Dhakal, Yub Raj2,3; Shah, Santosh K.; Fan, Ze-Xin; Braeuning, Achim5; Thapa, Uday Kunwar6; Bhandari, Sanjaya7; Aryal, Suman2,8; Bhuju, Dinesh Raj9
2019
Source PublicationPALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN0031-0182
Volume514Issue:xPages:251-264
Abstract

Knowledge of the long-term frequency and intensity of drought events in an area is crucial since drought has adverse effects on natural ecosystems, food security, economy, society, and civilization. We developed a 405 year long (1611-2015C.E.) tree-ring chronology of Pinus wallichiana (Blue pine) from the Dolpo area of the trans-Himalayan region in Nepal to reconstruct drought variability in this remote region. Correlation analysis revealed significant positive relationships with February-August precipitation, but negative correlations with temperature. High positive correlations with the self-calibrated Palmer drought severity index (scPDSI) confirmed that moisture availability during the early growing season and full growing season is the primary limiting factor for Blue pine tree growth in the trans-Himalayan region. We used a linear regression model between our tree-ring record and regional climate data to reconstruct a 319-year long (1697-2015C.E.) February-August scPDSI series. This reconstruction accounts for 39.4% of the total variance in actual sePDSI over the calibration period (1957-2015C.E.). The reconstruction showed that the area was under slightly dry conditions for most of the reconstructed period, with below normal scPDSI values. An extreme drought was observed in the year 1707. Also, the years 1705, 1706, 1784, 1786, 1809, 1810, 1813, 1821, 1849, 1858, 1861, 1909, 1967, 2006, and 2009 experienced severe drought conditions. Consecutive years with moderate drought were 1702-1706, 1783-1789, 1796-1798, 1812-1814, 1816-1827, 1846-1848, 1856-1864, 1873-1877, 1879-1882, 1899-1901, 1908-1911, and 1967-1968. Three historic mega-drought events that occurred in Asia were also captured in our reconstruction: Strange Parallels drought (1756-1768), the East India drought (1790-1796), and the late Victorian Great Drought (1876-1878). Very few wet years (1776-1979, 1989, 1991, and 2003) were observed during the reconstruction period. Power spectrum analysis revealed drought variability at frequencies of 2.0-2.5, 3.0, 12.0, and 128 years, suggesting that drought in the region might be linked to broad-scale atmospheric oceanic variabilities such as the El Nino-Southern Oscillation (ENSO) and the Atlantic Multidecadal Oscillation (AMO). The results not only improve our understanding on regional drought variability, but are also helpful to make decisions on adaptation measures for protecting the marginal communities of the trans-Himalayan region from the anticipated adverse impacts of future droughts.

KeywordWestern Nepal Himalaya Precipitation Variability Qilian Mountains Tibetan Plateau Severity Index Climate-change Growth Monsoon China Temperature
Subject AreaPhysical Geography ; Geology ; Paleontology
DOI10.1016/j.palaeo.2018.10.026
Indexed BySCI
Language英语
WOS IDWOS:000456355800019
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.xtbg.org.cn/handle/353005/11217
Collection2012年后新成立研究组
Affiliation1.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Key Lab Trop Forest Ecol, Mengla 666303, Yunnan, Peoples R China
2.GoldenGate Int Coll, Kathmandu, Nepal
3.Treering Soc Nepal, Lalitpur, Nepal
4.Siddhartha Environm Serv, Kathmandu, Nepal
5.Shah, Santosh K.] Birbal Sahni Inst Palaeosci, Lucknow 226007, Uttar Pradesh, India
6.Univ Erlangen Nurnberg, Inst Geog, D-91058 Erlangen, Germany
7.Univ Minnesota, Dept Geog Environm & Soc, Minneapolis, MN USA
8.Indiana State Univ, Dept Earth & Environm Syst, Terre Haute, IN 47809 USA
9.IIREC, Darling Hts, Qld, Australia
10.Nepal Acad Sci & Technol, Khumaltar, Lalitpur, Nepal
Recommended Citation
GB/T 7714
Gaire, Narayan Prasad,Dhakal, Yub Raj,Shah, Santosh K.,et al. Drought (scPDSI) reconstruction of trans-Himalayan region of central Himalaya using Pinus wallichiana tree-rings[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2019,514(x):251-264.
APA Gaire, Narayan Prasad.,Dhakal, Yub Raj.,Shah, Santosh K..,Fan, Ze-Xin.,Braeuning, Achim.,...&Bhuju, Dinesh Raj.(2019).Drought (scPDSI) reconstruction of trans-Himalayan region of central Himalaya using Pinus wallichiana tree-rings.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,514(x),251-264.
MLA Gaire, Narayan Prasad,et al."Drought (scPDSI) reconstruction of trans-Himalayan region of central Himalaya using Pinus wallichiana tree-rings".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 514.x(2019):251-264.
Files in This Item: Download All
File Name/Size DocType Version Access License
Drought (scPDSI) rec(4712KB)期刊论文作者接受稿开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Gaire, Narayan Prasad]'s Articles
[Dhakal, Yub Raj]'s Articles
[Shah, Santosh K.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Gaire, Narayan Prasad]'s Articles
[Dhakal, Yub Raj]'s Articles
[Shah, Santosh K.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Gaire, Narayan Prasad]'s Articles
[Dhakal, Yub Raj]'s Articles
[Shah, Santosh K.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Drought (scPDSI) reconstruction of trans-Himalayan region of central Himalaya using Pinus wallichiana tree-rings.pdf
Format: Adobe PDF
This file does not support browsing at this time
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.