在抚顺市环城林带 3 个不同功能区, 进行连续 5 天每天3 次采样, 对环城林净化、滞尘、杀菌和减噪的整体环境效应进行了系统的监测分析。 结果表明, 林带区内与林区外大气均值浓度相比, SO2、NO x、TSP 分别降低了 13.3 %、16.0 %和 42.7 %。 不同地区刺槐( Robinia pseudoacacia L.)叶片吸硫量排序为:市区>林区外>林区内;空气中主要污染菌种为细菌, 占 88.4 %;环城林对 1
～ 4 kHz 频段噪声的减噪效果最大, 减噪效应取决于声源距离和树种。 树种减噪效应排序为:油松( Pinus tabulaeformis Car r.) >落叶松〔Larix gmelinii ( Rupr.) Rupr.〕>刺槐。
 

The integ rated environmental efficiencies of purification, stagnant dust, kill airborne microbe and reducing noise exerted by urban-circulating fo rest were systematically monitored and analysed by installing monitoring spo ts and continually sampling for 5 days ( 3 times a day ) in 3 function districts in Fushun City .The results showed that the average concentrations of SO2, NOx, TSP inside fo restbelt w ere reduced 13 .3 %, 16 .0 % and 43 .2 % respectively in comparison with that outside forest belt .The sulphur co ntent in Robinia pseudoacacia L .leaves at different districts was in following order :urban >forest outside >forest inside .The bacteria in air was main one in polluted microbe variety with a composing of 88 .4 %.There w as a substantial effect of killing airborne microbe in urban-circulating forest .The most noise reduction effect from
urban-circulating forest w as within 1 ～ 4 kHz frequencies, varying on distance from forest belt, also on tree species, that is, Pinus tabulaeformis Carr .>Larix gmelinii ( Rupr.) Rupr .>Robinia pseudoacacia L .