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自1976年以来,我们对绍兴钢铁厂设置的林带、绿篱、散生树三种结构的空气净化效应进行了测定研究。研究表明,在距林带边缘 1米、 10米、 50米、100米处的林带的净化率分别达到18％、33％、47％、57％,不同的林带结构以疏透型的最好;绿篱的净化率平均可达43％,而且绿篱的高度越高,影响的距离越远;散生结构的净化率则因树种而异,影响净化率的主要因子是叶量和叶面积,叶量多、叶面积大的树种净化率高,本文测定的5个树种的平均净化率达到43％。笔者认为工厂区内各种形式的绿化对大气污染都有良好的净化效应,工厂绿化是防治大气污染的一项重要措施。
Since 1976, we have studied the air purification effect of three structures of shelterbelts, hedges and scattered trees set up by Shaoxing Steel Plant. The results showed that the purification rates of forest belts 1, 10, 50 and 100 meters away from the edge of forest belts reached 18%, 33%, 47% and 57%, respectively. The average cleaning rate of hedges can reach 43%, and the hedgerow height is higher, the farther the influence distance is. The purification rate of the scattered structure varies with tree species. The main factors affecting the purification rate are leaf area and leaf area, The purification rate of tree species with large leaf area and high leaf area was high, and the average purification rate of the five species tested in this paper reached 43%. The author believes that various forms of greening in the factory area have a good purifying effect on air pollution. Plant greening is an important measure to prevent and control air pollution.