| 腾格里沙漠东南部近地层沙尘水平通量和降尘 |
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| 引用本文： | 张正偲,董治宝,赵爱国.腾格里沙漠东南部近地层沙尘水平通量和降尘[J].环境科学研究,2010,23(2):165-169. |
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| 作者姓名： | 张正偲 董治宝 赵爱国 |
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| 作者单位： | 1.中国气象局乌鲁木齐沙漠气象研究所,新疆 乌鲁木齐 830002;中国科学院寒区旱区环境与工程研究所,沙漠与沙漠化重点实验室,甘肃 兰州 730000 |
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| 基金项目： | 中国沙漠气象科学研究基金项目(sqj2008007);;国家自然科学基金重点项目(40638038) |
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| 摘 要： | 沙漠是近地层沙尘物质的重要来源之一，沙漠地区近地层水平输送的沙尘物质随高度的变化特征和不同高度处的沉降量直接影响着沙尘的输送过程. 选择腾格里沙漠东南缘流动沙丘区的风沙科学观测场为研究区，利用沙尘水平通量采集器和降尘测量器对近地层约50 m的不同高度水平运动的沙尘和降尘进行了近2年的观测，对沙漠地区近地层水平运动的沙尘随高度变化特征及不同高度的降尘量进行了讨论. 结果表明:沙尘的水平通量和降尘量均随高度的增加而减小，二者与高度均可表示为指数函数的关系； 同时，沙尘水平通量与降尘量之间存在正相关关系，二者可用线性函数相互转换.
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| 关 键 词： | 沙尘水平通量 降尘量 腾格里沙漠 |
| 收稿时间： | 2009/6/30 0:00:00 |
| 修稿时间： | 2009/8/24 0:00:00 |
Variation Characteristics of Near-Surface Dust Horizontal Flux and Deposition Amount with Height in the Southeastern Tengger Desert |
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| ZHANG Zheng-cai,DONG Zhi-bao and ZHAO Ai-guo.Variation Characteristics of Near-Surface Dust Horizontal Flux and Deposition Amount with Height in the Southeastern Tengger Desert[J].Research of Environmental Sciences,2010,23(2):165-169. |
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| Authors: | ZHANG Zheng-cai DONG Zhi-bao and ZHAO Ai-guo |
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| Institution: | 1.Institute of Desert Meteorology, China Meteorological Bureau, Urumqi 830002,China;Key Laboratory of Desert and Desertification, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China2.Key Laboratory of Desert and Desertification, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China |
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| Abstract: | Deserts are a main source of dust storms in the surface layer,and aeolian dust transport processes are closely related to the variation with height of near-surface horizontal and deposition dust flux.This paper discusses the variation with height of horizontal dust flux and dustfall within 50 m above the ground surface based on about two-year observations of mobile sand dunes in the southeastern Tengger Desert by horizontal aeolian dust samplers and dustfall gauges.It is revealed that both horizontal aeolia... |
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| Keywords: | horizontal aeolian dust flux dustfall amount Tengger Desert |
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