| 河北省沙尘天气时空分布特征及影响因素分析 |
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| 引用本文： | 王仁德,邹学勇,程宏,吴晓旭.河北省沙尘天气时空分布特征及影响因素分析[J].水土保持通报,2009,29(6):57-63. |
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| 作者姓名： | 王仁德 邹学勇 程宏 吴晓旭 |
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| 作者单位： | 北京师范大学,地表过程与资源生态国家重点实验室,中国沙漠研究中心,北京,100875 |
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| 摘 要： | 利用20个基础气象站1980-2006年的气象观测数据,对河北省沙尘天气的时空分布特征及其影响因素进行了分析研究.结果表明,河北省沙尘天气以扬沙为主;在空间分异上,沙尘天气自西向东发生频次递减,西北部和南部是沙尘天气的高发区,东部是沙尘天气的低发区,各类沙尘天气的高发中心不尽相同.在年际变化上,扬沙、浮尘和沙尘暴3类沙尘天气均呈逐年波动减少的趋势,春季发生次数最多;气候周期性变化是造成沙尘天气年际年内变化的主要原因,大风与沙尘源地的耦合决定了沙尘天气的空间分布特征.
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| 关 键 词： | 沙尘天气 时空分布 影响因素 河北省 |
| 收稿时间： | 2009/3/13 0:00:00 |
| 修稿时间： | 2009/5/14 0:00:00 |
Spatiotemporal Characteristics of Sand-dust Weather and Its Influence Factors in Hebei Province |
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| WANG Ren-de,ZOU Xue-yong,CHENG Hong and WU Xiao-xu.Spatiotemporal Characteristics of Sand-dust Weather and Its Influence Factors in Hebei Province[J].Bulletin of Soil and Water Conservation,2009,29(6):57-63. |
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| Authors: | WANG Ren-de ZOU Xue-yong CHENG Hong and WU Xiao-xu |
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| Institution: | State Key Laboratory of Earth Surface Processes and Resource Ecology,and China Desert Research Center,Beijing Normal University,Beijing 100875,China;State Key Laboratory of Earth Surface Processes and Resource Ecology,and China Desert Research Center,Beijing Normal University,Beijing 100875,China;State Key Laboratory of Earth Surface Processes and Resource Ecology,and China Desert Research Center,Beijing Normal University,Beijing 100875,China;State Key Laboratory of Earth Surface Processes and Resource Ecology,and China Desert Research Center,Beijing Normal University,Beijing 100875,China |
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| Abstract: | Based on meteorological data from 21 weather statio ns in Hebei Province from 1980 to 2006,spatiotemporal characteristics of sand-dust weather and its influence factors are analyzed .Analyses indicate that dust-blow ing is the dominating type of sand-dust weather.In spatial scale,the occurring frequency of sanddust weather decreases from west to east,with the highest values in northwest and south and the low est in east .Different sand-dust weathers have different hig h-frequency centers .Periodicity of climate change is the main reason causing annual and seasonal changes of sand-dust w eather .The coupling character of gale and sand-dust source determines the spatiotemporal distribution of sand-dust weather .In time scale,three kinds of sand-dust weathers take on a trend of annually fluctuating decrease and seasonally occur most in spring . |
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| Keywords: | sand-dust weather spatiotemporal characteristic influence factor Hebei Province |
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