【摘要】 讨论了北京大气环境的区域性特征。利用网络点集确定出大气输送通道 ,提出了汇聚带概念 ,同时分析了北京地区大气污染特征 ,使用激光技术探测了大气气溶胶的垂直分布。研究表明北京大气环境质量与周边地区的污染源有密切的关系 ,认为只有进行同步治理才能有效地改善首都大气环境的质量。通过卫星监测技术和对气象流场进行分析 ,对我国沙尘暴现象进行了研究。指出境外沙尘源和境内沙尘源 ,并以 2 0 0 2年 3月 2 0日北京一次特强沙尘暴为例 ,对原始沙尘源的分布进行了解析 ,分析指出原始沙尘源包括春季长江以北广大的裸露土地 ,显示出沙尘暴起始过程是以点源群出现 ,然后合并为沙尘带 ,最后出现大面积沙尘污染。并简述了我国现代环境理念更多还原

【Abstract】 The regional characteristics of the atmospheric environment and th e impact in Beijing were discussed in details. Applying point set for the network ,the transport passageways of the atmosphere were determined, and the concept o f converging zone was put forward, and the characteristics of atmospheric pollut ion were analyzed. Applying the laser techniques, the vertical distribution of t he aerosol was detected. It was shown that the environmental quality of the atmo sphere in Beijing was relative to the pollution sources in the neighborhood arou nd Beijing area. And it was confirmed that only by the simultaneous treatment of the pollution source in both Beijing and its neighborhood areas, can the envir onmental quality of the atmosphere in Beijing be improved. By both the satellite detection techniques and the analysis of the wind stream f ields of the atmosphere, the phenomena of dust\|storm in China were researched, and the inner source and outersource of the dust\|storm in China were determine d. The especially strong dust\|storm on March 22, 2002, was taken as an example , by which the distribution of the original sources of the dust\|storm was resolved,and the lots of the bare lands in Spring in the north of the Yangzei R iver were involved. The initial process of the dust\|storm appeared as a grou p of point sources, which were then combined into a sand dust band. Finall y, the dust\|storm pollution of the large areas would appeare. The modern theory and concept for the environment in China were described chiefly.更多还原