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Precipitation variations recorded in tree rings from the upper Salween and Brahmaputra River valleys, China

Youping Chen, Mary Gagen Orcid Logo, Feng Chen, Heli Zhang, Huaming Shang, Hongfan Xu

Ecological Indicators, Volume: 113, Start page: 106189

Swansea University Author: Mary Gagen Orcid Logo

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DOI (Published version): 10.1016/j.ecolind.2020.106189

Abstract

The spatio-temporal variations of precipitation in the Tibetan Plateau (TP) have vital impacts on fresh water resources, and therefore the sustainable development, over a large part of Asia. Extending instrumental records of precipitation in the regional trans-boundary river basins is critical for r...

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Published in: Ecological Indicators
ISSN: 1470-160X
Published: Elsevier BV 2020
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URI: https://cronfa.swan.ac.uk/Record/cronfa53467
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last_indexed 2020-09-17T03:16:42Z
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spelling 2020-02-06T22:14:18.1396334 v2 53467 2020-02-06 Precipitation variations recorded in tree rings from the upper Salween and Brahmaputra River valleys, China e677a6d0777aed90ac1eca8937e43d2b 0000-0002-6820-6457 Mary Gagen Mary Gagen true false 2020-02-06 SGE The spatio-temporal variations of precipitation in the Tibetan Plateau (TP) have vital impacts on fresh water resources, and therefore the sustainable development, over a large part of Asia. Extending instrumental records of precipitation in the regional trans-boundary river basins is critical for resource managers and policy-makers to manage finite water resources in the region under climate change. Here we reconstruct precipitation variations from prior September to current June (r2 16 = 43%, 1600-2016 CE) in the upper Salween River valley and from prior July to current April (r2 17 = 44%, 1650-2016 CE) in the upper Brahmaputra River valley based on tree ring width variations in conifer tree rings from the Salween and Brahmaputra River basins. Correlation analysis reveals precipitation variations in the two river basins to co-vary over the past 367 years, and a wetting trend is revealed from the 1970s. Spatial correlation analyses with gridded precipitation data extends the reconstruction across the southern Tibetan Plateau. The first eigenvector of our ring width chronologies, and that of other precipitation-sensitive tree ringrecords from nearby areas successfully captures instrumental streamflow 23 variability in the two river basins. Over the past 3 decades, rapid socio-economic development and population growth in southern and southeastern Asia has pressured the water resource supply of the Tibetan Plateau. Our precipitation reconstructions provide valuable insight for strategies to manage these vital regional water resources. Journal Article Ecological Indicators 113 106189 Elsevier BV 1470-160X Brahmaputra River; Precipitation reconstruction; Salween River; Tibetan Plateau; Tree rings; Water resources management 1 6 2020 2020-06-01 10.1016/j.ecolind.2020.106189 COLLEGE NANME Geography COLLEGE CODE SGE Swansea University 2020-02-06T22:14:18.1396334 2020-02-06T22:14:18.1396334 Youping Chen 1 Mary Gagen 0000-0002-6820-6457 2 Feng Chen 3 Heli Zhang 4 Huaming Shang 5 Hongfan Xu 6 53467__16539__6bb25ed05dee4c1baa9efb5695bb2ec6.pdf Fengetal2020_submittedEcologicalIndicators.pdf 2020-02-06T22:33:29.9202285 Output 1079065 application/pdf Accepted Manuscript true 2021-02-28T00:00:00.0000000 Released under the terms of a Creative Commons Attribution Non-Commercial No Derivatives License (CC-BY-NC-ND). true English
title Precipitation variations recorded in tree rings from the upper Salween and Brahmaputra River valleys, China
spellingShingle Precipitation variations recorded in tree rings from the upper Salween and Brahmaputra River valleys, China
Mary Gagen
title_short Precipitation variations recorded in tree rings from the upper Salween and Brahmaputra River valleys, China
title_full Precipitation variations recorded in tree rings from the upper Salween and Brahmaputra River valleys, China
title_fullStr Precipitation variations recorded in tree rings from the upper Salween and Brahmaputra River valleys, China
title_full_unstemmed Precipitation variations recorded in tree rings from the upper Salween and Brahmaputra River valleys, China
title_sort Precipitation variations recorded in tree rings from the upper Salween and Brahmaputra River valleys, China
author_id_str_mv e677a6d0777aed90ac1eca8937e43d2b
author_id_fullname_str_mv e677a6d0777aed90ac1eca8937e43d2b_***_Mary Gagen
author Mary Gagen
author2 Youping Chen
Mary Gagen
Feng Chen
Heli Zhang
Huaming Shang
Hongfan Xu
format Journal article
container_title Ecological Indicators
container_volume 113
container_start_page 106189
publishDate 2020
institution Swansea University
issn 1470-160X
doi_str_mv 10.1016/j.ecolind.2020.106189
publisher Elsevier BV
document_store_str 1
active_str 0
description The spatio-temporal variations of precipitation in the Tibetan Plateau (TP) have vital impacts on fresh water resources, and therefore the sustainable development, over a large part of Asia. Extending instrumental records of precipitation in the regional trans-boundary river basins is critical for resource managers and policy-makers to manage finite water resources in the region under climate change. Here we reconstruct precipitation variations from prior September to current June (r2 16 = 43%, 1600-2016 CE) in the upper Salween River valley and from prior July to current April (r2 17 = 44%, 1650-2016 CE) in the upper Brahmaputra River valley based on tree ring width variations in conifer tree rings from the Salween and Brahmaputra River basins. Correlation analysis reveals precipitation variations in the two river basins to co-vary over the past 367 years, and a wetting trend is revealed from the 1970s. Spatial correlation analyses with gridded precipitation data extends the reconstruction across the southern Tibetan Plateau. The first eigenvector of our ring width chronologies, and that of other precipitation-sensitive tree ringrecords from nearby areas successfully captures instrumental streamflow 23 variability in the two river basins. Over the past 3 decades, rapid socio-economic development and population growth in southern and southeastern Asia has pressured the water resource supply of the Tibetan Plateau. Our precipitation reconstructions provide valuable insight for strategies to manage these vital regional water resources.
published_date 2020-06-01T04:06:24Z
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score 11.014067

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