城市绿化植物对大气污染的响应

研究了19种盆栽于广州市工业生产点(IS)、交通枢纽点(TS)和公园对照点(CS)的木本植物对大气污染的响应。综合污染指数表明3个研究地点2000年的污染程度由大到小的顺序为IS>TS>CS。在污染点生长的19种绿化植物叶片的叶绿素含量、Fv/Fm都有不同程度的降低,细胞膜渗漏率则上升。不同绿化植物对大气污染的响应不同,印度胶树,榕树,黄榕,海南红豆,夹竹桃,山玉兰,灰莉,桃花心木,牛乳树等对工业废气和机动车尾气等大气污染都有较强的抗性,而肖蒲桃,仪花,木棉,朱槿等对大气污染较为敏感。

Response of Some Plants for Municipal Greening to Air Pollutants

Nineteen taxa of potted seedlings were put on roofdecks at ca 5 m above ground in air-polluted sites (industrial site, IS; and transportati on site, TS) and less-polluted site (control site at Luhu Park, CS) at Guangzhou city to compare the response of the plants to air pollutants. The integrated i ndex of air pollution at the three sites in 2000 were in the order of IS > TS > CS. The content of chlorophyll and Fv/Fm in leaves of all species after growing for one and half year at two air-polluted sites (IS and TS) decreased, whereas the cell membrane leakage rate increased as compared with the control site. Some plants such as Ficus elastica F. microcarpa F. mi crocarpa cv. Golden leaves, Ormosia pinnata, Nerium indicum, Magnolia delavayi, Fagraea ceilanica, Swiet enia mahagoni and Mimusops elengi exhibited more resis tance to air pollutants than others such as Acmena accuminatis sima, Lysidice rhodostegia, Bombax malabari cum and Hibiscus rosa-sinensis.