| 树轮记录的历史时期阿克苏河流域沙尘天气变化 |
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| 引用本文： | 张瑞波,魏文寿,袁玉江,杨青,喻树龙,张同文,尚华明,陈峰,范子昂.树轮记录的历史时期阿克苏河流域沙尘天气变化[J].中国沙漠,2010,30(5):1040-1046. |
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| 作者姓名： | 张瑞波 魏文寿 袁玉江 杨青 喻树龙 张同文 尚华明 陈峰 范子昂 |
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| 作者单位： | 中国气象局,乌鲁木齐沙漠气象研究所/新疆维吾尔族自治区树木年轮生态重点实验室/中国气象局树年轮理化研究重点开放实验室,新疆,乌鲁木齐,830002 |
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| 基金项目： | 公益性行业(气象)科研专项，科技基础性工作专项，科技部科研院所社会公益研究专项，新疆气象局青年气象科研基金 |
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| 摘 要： | 相关计算表明，位于塔克拉玛干沙漠西北边缘沙漠-绿洲-山地过渡带的阿克苏河流域英阿特河树轮标准化年表与该区域4—7月的沙尘天气日数相关显著，单相关系数高达-0.527（α<0.0001），利用树木年轮重建阿克苏河流域历史时期沙尘天气日数是可行的，并具有明显的树木生理学意义。利用吾力街力克和英阿特河标准化自回归年表序列可较好地重建阿克苏气象站过去611 a的4—7月沙尘天气日数，经多方面验证，表明其具有较好的可信性。在过去611 a中，阿克苏河流域沙尘天气日数以2.3 a、4.1 a、5 a、6.8 a、8.8 a、10.7 a、45.1 a、50.7 a的周期最为显著；且经历了9个偏湿期及9个偏干期，降水的增加有利于制约沙尘天气的发生，在新疆气候暖湿化的背景下，沙尘天气有望减少；阿克苏河流域历史时期沙尘天气日数在1434年前后、1721年前后、1776年前后和1865年前后发生了由少向多突变，在1685年前后、1752年前后和1798年前后发生了由多向少的突变。这些突变年份中，1721年前后的由少到多突变最为显著，1752年前后的由多到少突变最为显著。17、18世纪沙尘天气较为频繁，15—17世纪，沙尘天气日数明显增加，18—20世纪，呈下降趋势。
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| 关 键 词： | 树木年轮 沙尘天气日数 阿克苏河流域 |
| 收稿时间： | 2009-11-11 |
| 修稿时间： | 2010-2-23 |
Sand-dust Days Constructed by Tree-ring in Aksu River Basin during Historical Period |
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| ZHANG Rui-bo,WEI Wen-shou,YUAN Yu-jiang,YANG Qing,YU Shu-long,ZHANG Tong-wen,CHANG Hua-ming,CHEN Feng,FAN Zi-ang.Sand-dust Days Constructed by Tree-ring in Aksu River Basin during Historical Period[J].Journal of Desert Research,2010,30(5):1040-1046. |
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| Authors: | ZHANG Rui-bo WEI Wen-shou YUAN Yu-jiang YANG Qing YU Shu-long ZHANG Tong-wen CHANG Hua-ming CHEN Feng FAN Zi-ang |
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| Institution: | Institute of Desert Meteorology, China Meteorological Administration/Key Laboratory of Tree-Ring Ecology of Xinjiang Uigur Autonomous Region/Key Laboratory of Tree-ring Physical and Chemical Research of China Meteorological Administration, Urumqi 830002, China |
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| Abstract: | The relationship between tree-ring standardized autoregressive chronologies and sand-dust days from April to July in Aksu River Basin was significant with the correlation coefficients high up to －0.527(α＜0.0001). Tree-ring standardized autoregressive chronologies were used to reconstruct the sand-dust days data series from April to July in Aksu River Basin during the recent 611 years based on tree-ring samples collected in YAT and WLJ sampling plots in Aksu River Basin. Analyzing results are as follows. The variation of sand-dust days from April to July in Aksu River Basin during the past 611 years had periods of 2.3 a, 4.1 a, 5 a, 6.8 a, 8.8 a, 10.7 a, 45.1 a and 50.7 a. The abrupt change of sand-dust days happened in year 1434, 1685, 1721, 1752, 1776, 1798 and 1865. There were nine frequent-occurrence stages and nine less-occurrence stages of sand-dust days. There was a negative correlation between the sand-dust days and the precipitation because the precipitation can restrain the occurrence of sand-dust. |
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| Keywords: | tree-ring sand-dust days Aksu River Basin |
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