This paper s highlights were given to measuring devices, research method,and evaluation criteria,daily and seasonal change of negative air ion concentration,and effects of forest stand,weather condition and water body on Beijing Olympic Forestry Park negative air ion.

The Characteristic of Atmospheric Particle Size Distribution and Their Light Extinction Effect in Beijing during Winter and Spring Time;

Evaluation of Noise in a Residential High Building along the 4th Ring Road of Beijing;

Study on PAHs concentrations in urban road runoff in Beijing;

Water resources deployment model for Beijing City;

A Study on Storm and Rianfall Pattern in Beijing City;

Discussion on Sewage Irrigation Development Process in the Suburbs of Beijing City;

The Introduction of the thought of "Municipal Building" from the Modern West and the Disussions about the Development Direction of Peking;

The Research of Peking Electronic Governmental Administration Framework;

Peking, as one of the ancient capitals, the change of trappings in it during 1920s and 1930s can embody more about the sudden change of productive condition, social prevailing fashion and social psychology during special historical phase.

Effect of road dust on air quality in Beijing;

Physico-chemical characteristics of ambient particles settling upon leaf surface of six conifers in Beijing;

Particle size characteristics and possible sources of street dust in Beijing;

Liuhai-lake in Beijing city is used an example.