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Tree‐ring‐based SPEISPEI reconstruction in central Tianshan Mountains of China since A.D. 1820 and links to westerly circulation

机译:基于树圈的 Spei 中国中央天山中的Spei重建以来,自澳元以来。1820年和西方流通的链接

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ABSTRACT xml:id="joc4884-para-0001"> Understanding long‐time scale of drought variability is vital to the hydrological management and agriculture in dryland. Based on two sites of Schrenk spruce ( <fi>Picea schrenkiana</fi> ), a robust tree‐ring chronology was developed and employed to study the drought variability in central Tianshan Mountains. The result shows that the chronology significantly positively correlates with precipitation in previous December, April, May and June in current year, and significantly negatively correlates with temperature in April, May, July and August in current year. Highest correlation was found between tree‐ring width and both April–June standardized precipitation evapotranspiration index ( <fc>SPEI</fc> ) and Palmer drought severity index, indicating that Schrenk spruce's growth strongly responds to the current summer drought. We further reconstruct <fc>SPEI</fc> for the period 1820–2005, and the series are verified both with the statistical methods and other nearby reconstructions. Multi‐taper method spectral and wavelet analyses reveal the significant low‐ and high‐frequency cycles (26–36, 8.5, 6.0, 5.7 and 3.4?years). Drought has alternatively varied in the past two centuries with four apparently dry periods and wet periods, and the driest period occurs from 1870 to 1890 and the wettest period occurs from 1842 to 1855 in the central Tianshan Mountains. Some extreme drought events are detected, such as 1885, 1918, 1944–1945 and 1951. Significant correlations of reconstructed <fc>SPEI</fc> and precipitation and temperature indicate that the source of air masses and the water vapour transport paths lies in the northwestern direction of our study area and are controlled by westerly circulation. This </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> <div class="translation abstracttxt"> <span class="zhankaihshouqi fivelineshidden" id="abstract"> <span>机译:</span><abstract xmlns =“http://www.wiley.com/namespaces/wiley”type =“main”xml:id =“joc4884-abs-0001”> <标题类型=“main”>抽象</ title> < P XML:ID =“Joc4884-段 - 0001”>了解干旱变异的长期规模对旱地的水文管理和农业至关重要。基于两位Schrenk云杉(<FI> Picea Schrenkiana </ Fi),开发了一种强大的树木时间表,并采用了天山中部的干旱变异性。结果表明,该年代学前一年度,5月,5月,5月,5月和6月在本年度的下降显着相关,并与本年度,7月和8月的温度显着地相关。树木宽度和4月6月标准化降水蒸发散散指数(<FC> SPEI </ FC>)和Palmer干旱严重性指数之间的最高相关性,表明Schrenk云杉的增长强烈应对当前夏季干旱。我们进一步重建<FC> SPEI </ FC>,为1820-2005期间,统计方法和其他附近的重建验证该系列。多锥度方法光谱和小波分析显示出显着的低频和高频循环(26-36,8.5,6.0,5.7和3.4年)。在过去的两个世纪中,干旱变化,有四个明显干燥的时期和潮湿的时期,最干燥的时期从1870年到1890年发生,最潮湿的时期在田山中部的1842年到1855年发生。检测到一些极端干旱事件,例如1885,1918,1944-1945和1951.重建<Fc> Spei </ Fc>和降水和温度的显着相关性表明空气质量和水蒸气运输路径位于我们研究区域的西北方向,由Westerly流通控制。这个 </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> </div> <div class="record"> <h2 class="all_title" id="enpatent33" >著录项</h2> <ul> <li> <span class="lefttit">来源</span> <div style="width: 86%;vertical-align: text-top;display: inline-block;"> <a href='/journal-foreign-21026/'>《International Journal of Climatology: A Journal of the Royal Meteorological Society》</a> <b style="margin: 0 2px;">|</b><span>2017年第6期</span><b style="margin: 0 2px;">|</b><span>共10页</span> </div> </li> <li> <div class="author"> <span class="lefttit">作者</span> <p id="fAuthorthree" class="threelineshidden zhankaihshouqi"> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Jiang Peng&option=202" target="_blank" rel="nofollow">Jiang Peng;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Liu Hongyan&option=202" target="_blank" rel="nofollow">Liu Hongyan;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Wu Xiuchen&option=202" target="_blank" rel="nofollow">Wu Xiuchen;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Wang Hongya&option=202" target="_blank" rel="nofollow">Wang Hongya;</a> </p> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zkzz" style="display: none;">展开▼</span> </div> </li> <li> <div style="display: flex;"> <span class="lefttit">作者单位</span> <div style="position: relative;margin-left: 3px;max-width: 639px;"> <div class="threelineshidden zhankaihshouqi" id="fOrgthree"> <p>College of Urban and Environmental Sciences and MOE Laboratory for Earth Surface ProcessesPeking UniversityBeijing China;</p> <p>College of Urban and Environmental Sciences and MOE Laboratory for Earth Surface ProcessesPeking UniversityBeijing China;</p> <p>College of Resources Science and TechnologyBeijing Normal UniversityChina;</p> <p>College of Urban and Environmental Sciences and MOE Laboratory for Earth Surface ProcessesPeking UniversityBeijing China;</p> </div> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zhdw" style="display: none;">展开▼</span> </div> </div> </li> <li > <span class="lefttit">收录信息</span> <span style="width: 86%;vertical-align: text-top;display: inline-block;"></span> </li> <li> <span class="lefttit">原文格式</span> <span>PDF</span> </li> <li> <span class="lefttit">正文语种</span> <span>eng</span> </li> <li> <span class="lefttit">中图分类</span> <span><a href="https://www.zhangqiaokeyan.com/clc/1232.html" title="气候学">气候学;</a></span> </li> <li class="antistop"> <span class="lefttit">关键词</span> <p style="width: 86%;vertical-align: text-top;"> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=SPEI&option=203" rel="nofollow">SPEI;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=tree‐ring width&option=203" rel="nofollow">tree‐ring width;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Tianshan Mountains&option=203" rel="nofollow">Tianshan Mountains;</a> </p> <div class="translation"> 机译:spei;树木宽;天山山脉; 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