| A 307-YEAR TREE-RING SPEI RECONSTRUCTION INDICATES MODERN DROUGHT IN WESTERN NEPAL HIMALAYAS | |
| Bhandari, Sanjaya; Gaire, Narayan Prasad2,3; Shah, Santosh K.; Speer, James H.; Bhuju, Dinesh Raj2; Thapa, Uday Kunwar5 | |
| 2019 | |
| Source Publication | TREE-RING RESEARCH
 |
| ISSN | 1536-1098 |
| Volume | 75Issue:2Pages:73-85 |
| Abstract | Western Nepal has experienced a severe drought in the past two decades, but observation records across Nepal are too short to place the recent drought in a longer context to understand the full range of natural variability in the climate system. In the present study we have collected tree core samples of Tsuga dumosa from two sites, Chhetti and Ranghadi, in the Api Nampa Conservation Area of the western Nepal Himalayas to understand drought variation for the past three centuries. We have developed a 357-year (AD 1657-2013) tree-ring chronology. The tree growth-climate response analysis revealed a stronger positive correlation with spring (March-May) standardized precipitation evapotranspiration index (SPEI01) (r = 0.523, p < 0.01) than precipitation (r = 0.459, p < 0.01), self-calibrating Palmer drought severity index (scPDSI) (r = 0.250, p < 0.01), or temperature (r = -0.486, p < 0.01). Stronger positive correlation with SPEI01 indicates moisture availability is the limiting factor for the growth of this species on these sites. Based on this growth-climate response we reconstructed spring SPEI from AD 1707 to 2013 for the region. The reconstruction showed several dry and wet episodes indicating no persistent climate trend within the past three centuries. The current drought is one of the four most severe in our 307-year record. |
| Keyword | Nepal SPEI precipitation dendroclimatology dendrochronology Himalaya drought Tsuga dumosa |
| Subject Area | Forestry |
| DOI | 10.3959/1536-1098-75.2.73 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000482716100001 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | https://ir.xtbg.ac.cn/handle/353005/11480 |
| Collection | 支撑系统 |
| Affiliation | 1.Tribhuvan Univ, Cent Dept Environm Sci, Kathmandu, Nepal 2.Bhandari, Sanjaya; Speer, James H.] Indiana State Univ, Dept Earth & Environm Syst, Terre Haute, IN 47809 USA 3.Nepal Acad Sci & Technol, Lalitpur, Nepal 4.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Key Lab Trop Forest Ecol, Mengla, Yunnan, Peoples R China 5.Shah, Santosh K.] Birbal Sahni Inst Palaeo Sci, 53 Univ Rd, Lucknow, Uttar Pradesh, India 6.Univ Minnesota, Dept Geog Environm & Soc, Minneapolis, MN USA |
| Recommended Citation GB/T 7714 | Bhandari, Sanjaya,Gaire, Narayan Prasad,Shah, Santosh K.,et al. A 307-YEAR TREE-RING SPEI RECONSTRUCTION INDICATES MODERN DROUGHT IN WESTERN NEPAL HIMALAYAS[J]. TREE-RING RESEARCH,2019,75(2):73-85. |
| APA | Bhandari, Sanjaya,Gaire, Narayan Prasad,Shah, Santosh K.,Speer, James H.,Bhuju, Dinesh Raj,&Thapa, Uday Kunwar.(2019).A 307-YEAR TREE-RING SPEI RECONSTRUCTION INDICATES MODERN DROUGHT IN WESTERN NEPAL HIMALAYAS.TREE-RING RESEARCH,75(2),73-85. |
| MLA | Bhandari, Sanjaya,et al."A 307-YEAR TREE-RING SPEI RECONSTRUCTION INDICATES MODERN DROUGHT IN WESTERN NEPAL HIMALAYAS".TREE-RING RESEARCH 75.2(2019):73-85. |
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| A 307-YEAR TREE-RING（1380KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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