Greening Survey And Eco-efficiency Research Of Artificial Shelter Forest In Coastal Town Region Of Eastern Zhejiang

Based on study of Chemicals and Medicine base of Linhai, Zhejiang Province and Eco-green of Hangzhou Bay, the study surveyed green land. Used of advanced equipment, we studied ecological benefits of plants of different plant communities structure in the Medical Chemistry park, and determined the indicators. Calculated and compared the ability of reducing the temperature, increasing the humidity, absorbing carbon, releasing oxygen, hindering dust and improving the concentration air ion. The results as follows:(1)The tree species were monotonous in the Medical Chemistry park, only 50 kinds of species. And only 26 kinds of species adapted to environment to the Medical Chemistry park: Phoenix canariensis, Casuarina equisetifolia, Bambusa multiplex, Washingtonia filifera, Pyracantha fortuneana, Fraxinus pennsylvanica, Taxodium mucronatu, Ascendens mucronatum, Sapium sebiferum, Nerium indicum, Hibiscus syriacus, Robinia pseudoacacia.(2)Plants had a significant regulatory role on the temperature and humidity. At the same time, green land was lower 2.65℃than cement road of temperature, and higher 7.2% of humidity. Different plant communities had different effect on reducing the temperature and increasing the humidity. Arbor, shrub and grass were lower 2.86℃of temperature,higher 7.17% of humidity; shrub and grass were lower 2.58℃,higher 8.17%; arbor and grass were lower 3.13℃,higher 7.68%; reed was lower 2.83℃,higher 5.65%; lawn was lower 1.82℃,higher 5.05%.(3)Green land of CO2 were lower 17.4ppm and 3.7ppm than of cement road in August and October. While in December, cement road were higher 32.7ppm than green land. CO2 had a significant negative correlation with temperature, and had a significant positive correlation with humidity.(4)PM₁₀0 had a significant diurnal variation of different plant communities in the park, and had different changes in different months. The order of the change of quality and concentration of PM₁₀0 was: July <October <August <December. The order of the odds ratio change of quality and concentration of PM₁₀0 was: Arbor, shrub and grass <reed, lawn <shrub < Arbor and Grass. Quality and concentration of PM₁₀0 had a significant positive correlation with temperature, and had a significant negative correlation humidity.(5)The negative air ion concentration of different plant communities was higher than road in the park. The order of negative air ion concentration of plant communities was: August> October> December. The order of air quality level was: Reed> Arbor, Shrub and Grass> Arbor and grass> Shrub> Lawn> Road. The negative air ion concentration had a significant negative correlation with temperature and PM₁₀0, and had a significant positive correlation with humidity.