Noise impacts evaluation of island wind plant is significant for protecting the living environment of island residents and wildlife habitats. To analyze principle noise factor and its impacts on Zhejiang coastal area, both the distance attenuation theory and GIS spatial analysis tools were introduced in this research. Specifically, the noise distributions of different air blowers were analyzed. Different factors affecting the noise distribution were taken into account, which include distance, attenuation coefficient, topography and wind velocity. The analysis is based on 1:500 topographic map, which was further segmented into 10*10 meter grids. According to the analysis, the error between research result and the on-the-spot datum of sensitive spots is 0~3dB (A), which proves that the method in this research is effective.
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