空气污染对石峰公园植被危害的研究

Harm of Air Pollution to the Plant Cover in Shifeng Park

对湖南省株洲市石峰公园植被受空气污染的危害情况进行调查分析，结果表明，公园植被常年受到含有Ｓ，Ｚｎ，Ｐｂ，Ｃｄ等有害元素在内的废气的严重污染，使占总面积４２．６％的植被受到了危害．污染严重地段土壤和树木叶片中上述元素积累明显，树本叶片中的叶绿素含量降低，脯氨酸含量显著增加，导致树木长势减弱，群落衰败．根据各种植物对空气污染的反应，对该园主要植物种类的抗污染性进行了分级．

The disastrous situation, caused by air pollution, of the Plant cover in Shifeng Park in Zhushoucity,Hunan province, was investigated and analyzed. The result indicates that the Plant cover in the park isseriously polluted all the year round by the industrial waste gases which contain such poisonous elements as S,Zn,Pb and Cd. This makes 42. 6% of the total vegetation harmed land in the seriously polluted area, the cumulation of the poisonous elements (S, Zn,Pb .Cd,etc)in leaves and soil is obvious. The content of chlorophyllin leaves decreases while the concentration of proline increases. These cause the growth of the plants slowingdown and the phytobiocenose declining. According to the responses of various plants in the park to air pollution,the gradation of the main species in resistance selection has been made.