Intra-and interannual climate variability drives the radial growth of Pinus wallichiana in the Nepalese Himalayas

IF 16.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
D. Gautam, Jishan Karki, N. P. Gaire, B. Roth, Suman Bhattarai, S. Thapa, R. Sharma, Jun Li, X. Tong, Qi Jing Liu
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引用次数: 6

Abstract

ABSTRACT Background The Himalayas have been experiencing a higher rate of temperature increase than the global average. How such climate warming and changes in the precipitation regime may affect the growth responses of individual tree species is little known but is required so that adequate projections of future distributions and management plans can be formulated. Aims This study was carried out to investigate the influence of intra- and interannual climate variability on the radial growth of Pinus wallichiana, a conifer species that typically colonises glacier forelands and screes. Methods Tree core samples collected for chronology development that spanned over a 119-year-long (1899–2017) period and the relationship of ring width with climatic data was analysed using correlation analysis. Results Radial growth in P. wallichiana was negatively correlated with mean temperature in March and over the pre-monsoon (March – May) seasonal average and it was positively correlated with monthly precipitation in March and September. Monthly standardised precipitation index (SPI) values indicated that overall the growth of P. wallichiana was mainly controlled by precipitation availability during the pre-monsoon season, particularly in March. Conclusion Moisture availability especially in spring is crucial for the radial growth of P. wallichiana. However, how this response varies throughout the elevational range of the species deserves further study to be able to make projections on the likely range expansion or contraction of the species in response to ongoing climate change.
尼泊尔喜马拉雅地区的年际气候变率和年际气候变率对瓦利奇阿纳松径向生长有影响
背景:喜马拉雅地区的气温上升速度一直高于全球平均水平。这种气候变暖和降水制度的变化如何影响单个树种的生长反应尚不清楚,但这是必要的,以便能够制定对未来分布和管理计划的充分预测。目的研究年际和年际气候变化对wallichiana松径向生长的影响。wallichiana松是一种生长在冰川前陆和地表的针叶树种。方法采用相关分析方法,对采集的119 a(1899-2017)年代学发展的树木岩心样本进行年代学分析,并对环宽与气候数据的关系进行分析。结果柽柳径向生长与3月平均气温及季风前(3 - 5月)季节平均呈负相关,与3月和9月月降水量呈正相关。月标准化降水指数(SPI)表明,在季风前季节,尤其是3月份,水杨的生长主要受降水有效性的控制。结论水分有效性对水蛭径向生长至关重要,尤其是春季水分有效性。然而,这种响应在整个物种海拔范围内是如何变化的,值得进一步研究,以便能够预测物种在应对持续气候变化时可能的范围扩大或缩小。
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来源期刊
Accounts of Chemical Research
Accounts of Chemical Research 化学-化学综合
CiteScore
31.40
自引率
1.10%
发文量
312
审稿时长
2 months
期刊介绍: Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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