Abstract:The scenic recreational forest is an important part of the urban forest. It has ecological health care functions which include bacteria reduction, noise reduction, dust retention, oxygen release, and adjustment of human comfort. For the development and administration of the recreational forest, understanding how to explore a landscape model with an exceptional and comprehensive ecological health care effect is extremely crucial. This study took 9 kinds of scenic recreation forests with different community structures, including arbor-shrub-grass, arbor-grass and shrub-grass in Beijing Xishan National Forest Park as the research object. We investigated the dynamic changes in air anion concentration, PM2.5concentration and reduction rate, noise reduction rate, bacteria reduction rate, and human comfort using a combination of field monitoring, interior analysis, and the complete index approach. This study analyzed the effects to ecological health care of environmental factors such as temperature, humidity and wind speed, which used the comprehensive index method to quantitatively evaluate the effect of ecological health care. The results showed that:(1) the annual variation range of air anion concentration was 296.67-1090.00 con/cm3, the air anion concentration of tree-shrub-grass structure was the highest (755.62±110.11 con/cm3), and the shrub-grass structure was the lowest one (637.53±121.90 con/cm3). (2) The annual variation range of PM2.5 concentration was 6.83-63.04 μg/m3, and the order of concentration value was summer < autumn < spring < winter, the reduction rate of PM2.5 by the arbor-shrub-grass structure was the largest (10.95%), and reduction rate of PM2.5 by shrub-grass structure was the lowest (1.17%). (3) There was an optimal noise reduction field with the increase of distance, and the average noise reduction rate of different community structures was as follows:arbor-shrub-grass > arbor-grass > shrub-grass. (4) The range of bacteria reduction rate was 11.65%-44.60%, and arbor-shrub-grass > arbor-grass > shrub-grass. (5) The comfort index of the arbor-grass structure was 8.83 and that of the shrub-grass structure was 9.06. (6) The number of bacteria was strongly connected with temperature, humidity, and wind speed; PM2.5 concentration was negatively correlated with temperature, but positively correlated with humidity and wind speed; Temperature and wind speed were favorably connected with noise, while the humidity was adversely correlated; Humidity and wind speed have a negative relationship with air anion concentration. (7) The comprehensive index of ecological health care effect ranged from 1.6565 to 9.1387, and the overall order was arbor-shrub-grass > arbor-grass > shrub-grass. For the construction of scenic recreational forest in Beijing, it is appropriate to take arbor-shrub-grass as the community structure, give priority to local tree species with ecological health care effects such as Pinus tabulaeformis, Robinia pseudoacacia, and Platycladus orientalis in the selection of tree species.