Analysis On Noise Reduction Effect Of Different Types Of Urban Green Space In Hohhot

Noise pollution is a serious pollution. One of the functions of urban green space has is to reduce the noise function, because the green of refraction, reflection and absorption and reduce noise. Different types of urban green space has different function and reduce the noise, the different types of green space noise reduction effect has a high value.This article studies the green space noise reduction effect solutions:the first step is to choose the Hohhot area is representative of the urban green space, the campus green space, park green space and residential green space and road) to design the corresponding samples; To the second step is to do a detailed investigation, summarizes the sample area green space plant characteristics; The third step is to use HS5660D precision noise spectrum analyzer, and fixed noise (no other sound source interference conditions) for detecting sample to do the noise attenuation; The fourth step is to detect using computer data processing, reduce the noise effect of different green space were summarized.This paper studies the conclusion is that the noise in the process of natural attenuation (fixed sound source for43dB), the unit distance decrease noise intensity ratio of0.16dB/m; Different affiliated green space noise reduction effect of vegetation in average unit distance noise intensity reduction rate was followed by the campus green space0.35dB/m, park green space, residential green space0.48dB/dB/m0.23m0.30dB/m, road green space; Different community structure of green space noise reduction effect of the noise reduction effect is compound structure of green space is greater than the single structure of green space; Effect of different plant species composition of green space noise reduction is shrubbery, composition of the largest, followed by the composition of pure shrubs, the smallest pure arbor composition; Different seasons green space noise reduction effect from large to small is summer, autumn, winter, spring, urban green space with different types of noise reduction effect is also different, also the noise reduction effects vary with the seasons...