干旱区生态环境知识资源中心(Arid): 兰州市春季沙尘气溶胶质量浓度的若干研究

Arid

	兰州市春季沙尘气溶胶质量浓度的若干研究
其他题名	Study on the Mass Concentration of the Atmospheric Dust and Aerosol over Lanzhou City in Spring
	奚晓霞; 李杰; 权建农
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2004
卷号	21 期号:2 页码:112-116
中文摘要	通过对兰州地区春季大气背景、浮尘、扬沙、沙尘暴灭气的人气采样，得到了不同天气状况下大气气溶胶的浓度、PM_(10)的粒径分布及大气气溶胶的分布规律。
英文摘要	The influences of dust weather lo the urban areas become more serious along with rapid increase of human activities and the intensification of land desertification. More than 10 dust storms occurred in north China in 2000, in which some dust storms occurred from the Hexi Corridor in Gansu Province affected many cities, such as Lanzhou and Beijing. Therefore, more and more scholars research dust weather, however, the research on the physical properties of aerosol is less. In this paper, the atmospheric samples including the atmospheric background, floating dusts, blowing sands and dust storms over Lanzhou region in spring are analyzed, the distribution of the mass concentration of atmospheric aerosol and the PM_10 particles is revealed. The results show that the dust weather occurs frequently over the Lanzhou region in spring, which is related to its geographical location and the meteorological conditions. The average mass concentrations, floating dust, blowing sands and dust storm are 0. 486 8 mg/m , 1.4664mg/m~3, 2. 130 5 mg/m~3 and4.861 5 mg/m~3 respectively. The curves of atmospheric PMjo granular distribution over the Lanzhou region are bimodal, trimodal and unimodal under floating dusts, blowing dusts and dust storms respectively. The proportions of the fine particles (<2.1\|im) occupies 22. 6%, 7.2%, 11.4% and 5.7% under the background weather, floating dusts, blowing dusts and dust storms respectively.
中文关键词	沙尘
英文关键词	dust
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOSCIENCES MULTIDISCIPLINARY
WOS研究方向	Geology
CSCD记录号	CSCD:1626261
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/205056
作者单位	兰州大学资源环境学院, 西部环境教育部重点实验室, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	奚晓霞,李杰,权建农. 兰州市春季沙尘气溶胶质量浓度的若干研究[J]. 兰州大学,2004,21(2):112-116.
APA	奚晓霞,李杰,&权建农.(2004).兰州市春季沙尘气溶胶质量浓度的若干研究.干旱区研究,21(2),112-116.
MLA	奚晓霞,et al."兰州市春季沙尘气溶胶质量浓度的若干研究".干旱区研究 21.2(2004):112-116.