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| 北京及其北部地区大气降尘时空分布特征 | |
| 引用本文： | 唐杨,徐志方,韩贵琳.北京及其北部地区大气降尘时空分布特征[J].环境科学与技术,2011,34(2):115-119. |
| 作者姓名： | 唐杨 徐志方 韩贵琳 |
| 作者单位： | 1. 中国科学院地球化学研究所,贵州,贵阳,550002;中国科学院研究生院,北京,100049 2. 中国科学院地质与地球物理研究所,北京,100029 3. 中国科学院地球化学研究所,贵州,贵阳,550002 |
| 基金项目： | 中国科学院知识创新工程重要方向项目(KZCX2-YW-205); 国家自然科学基金项目(40973088) |
| 摘 要： | 文章研究了北京及其北部邻近地区降尘量的时空分布特征和变化规律.在该区的10个采样点开展了为期一年的大气降尘收集工作,结果表明,研究区内年均降尘量为58.4g/(m2·a),最高和最低年降尘量分别位于研究区西北部的张北和东南部的滦平,其年均降尘量分别为169g/(m2·a)和15.6g/(m2·a).整个研究区的降尘主要... |
| 关 键 词： | 大气降尘 降尘量 时空变化 北京地区 |
Spatio-temporal Distribution of Atmospheric Dry Deposition in North Area of Beijing |
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| TANG Yang,XU Zhi-fang,HAN Gui-lin.Spatio-temporal Distribution of Atmospheric Dry Deposition in North Area of Beijing[J].Environmental Science and Technology,2011,34(2):115-119. | |
| Authors: | TANG Yang XU Zhi-fang HAN Gui-lin |
| Institution: | TANG Yang1,2,XU Zhi-fang3,HAN Gui-lin1(1.Institute of Geochemistry,Chinese Academy of Sciences,Guiyang 550002,China,2.Graduate University,Beijing 100049,3.Institute of Geology and Geophysics,Beijing 100029,China) |
| Abstract: | The monthly atmospheric dry deposition samples were collected from ten sites in north area of Beijing over a year.The annual average deposition amount of this area is 58.4 g/(m2·a).The maximal and minimal values are observed in Zhangbei and Luanping,with annual average deposition amount of 169 g/(m2·a) and 15.6 g/(m2·a) respectively.Based on the observational data,the concentrated deposition time mainly appears in winter and spring,and the quantity of deposition during the period of spring season accounts for 31.2%~49.1% of the total annual deposition amount in deferent sites.The high deposition amount should be attributed to the drought climate,thin vegetation and frequently strong wind weather in north China in winter and spring,on the contrary,abundant vegetation cover and absence of sand storm bring only 5.6%~15.1% of the total annual deposition amount in summer.Due to the block of the Yanshan Mountains,the dry deposition decreases from north-west to south-east. |
| Keywords: | atmospheric dry deposition deposition amount spatio-temporal distribution Beijing |
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