Among the environmental problems caused by urbanization, noise has become one of the major factors affecting seriously both physical and psychological health of the urban residents. It was found that the green spaces with reasonable allocation had an obvious effect on noise reduction. This paper studied the noise reduction effect and value of urban road green spaces based on the mechanism of noise reduction of green spaces and the results of the noise monitoring experiments, combined with the survey data of green patch. Results were as follows: 1) The noise reduction effect of green spaces differs because of its different structure: the trees-shrubs-grasses strongest, then followed by trees and shrubs, and grasses the worst. Moreover, the noise reduction effect of each kind of the green spaces grows along with the width. 2) The annual quantity of the noise reduction of urban road green spaces was 9.35×107 dB(A) ·a-1 in Beijing, and the trees-shrubs-grasses contributes the most, that is 92.95%. The average quantity of the noise reduction of urban road green spaces per unit area was 20477 dB(A) ·hm-2·a-1, and the trees-shrubs-grasses still was the largest, being 2.92 times of the trees, 17.92 times of the shrubs and 18.64 times of the grasses. 3) The annual value of the noise reduction service provided by urban road green spaces was 713 million yuan·a-1, and the average value per unit area was 156033 yuan·hm-2·a-1. The results showed that the structure of urban road green spaces was reasonable in Beijing, and had played an important role in the noise reduction with considerable ecological benefits.
CHEN Long, XIE Gao-di, GE Li-qiang, PEI Sha, ZHANG Chang-shun, ZHANG Biao, XIAO Yu
. Research on Noise Reduction Service of Road Green Spaces—A Case Study of Beijing[J]. JOURNAL OF NATURAL RESOURCES, 2011
, 26(9)
: 1526
-1534
.
DOI: 10.11849/zrzyxb.2011.09.008
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