Extraction Of Forest Stand Spatial Structure And Its Relationship With Atmospheric Particulate Matter Distribution

Caused by atmospheric particulates in the air pollution is harmful to the human body health, forest as part of the ecosystem is one of the most important, to regulate and control the atmospheric particulate matter concentration has a significant effect, especially the forest spatial structure of atmospheric particulates of ceiling lag effect is especially evident. At present, many scholars at home and abroad to study the effect of forest vegetation on the retention of atmospheric particulate matter, and put forward a lot of angle and qualitative and quantitative research methods. The current through the perspective of forest species and forest range, Lin Qun configuration to study of trees on the block effect of atmospheric particulate matter. The adsorption ability of the surface to the atmospheric particulate matter is also analyzed from the angle of the blade. This study selected the Beijing Olympic Forest Park adjacent to the woods ring road as the experimental samples, using 3D laser scanning system to obtain the stand point cloud data, respectively, through grid method and quasi fisheye image extraction trees in the canopy volume and leaf area index. Obtaining samples of atmospheric particulate matter concentration data and ambient atmospheric environmental factor data. Analysis of the retention capacity of the stand spatial structure to the atmospheric particulate matter from the angle of the stand structure parameters. The results show that there is a certain correlation between the changes of forest canopy spatial structure and dust retention effect. The reference is provided for the control of atmospheric particulate matter concentration in the actual production.