安顺市区典型绿化植物滞尘能力与杀菌作用研究

 园林绿化作为城市生态系统的一个子系统,在美化城市环境、保持城市生态平衡、维持城市可持续发展方面起着积极的作用。本文在对安顺城区绿化植物进行调查的基础上对典型植物的叶面积、滞尘能力和杀菌能力的研究表明：区内绿化植物种类较少,结构单一,树种均匀度低。叶面积指数以乔木树种最大,攀援植物次之,花卉和草本植物第3,灌木最小。不同绿化植物滞尘能力随时间而逐渐增加,杜鹃的滞尘能力最强,滞尘四周后达6.6298g/(m²·周),比第一周结束时的3.3376g/(m²·周)增大近2倍；其次为马尾松,达5.7413g/(m²·周)；攀援植物滞尘能力最小。空旷区域的含菌量明显高于有植物的区域,香樟等11种植物杀菌效果极强,杀菌率达40%以上。

Sluggishing Dust and Disinfection of Typical Green Plants in Anshun City Proper

The garden greening as a subsystem of the urban ecosystems beautifies the urban environment; it plays an active role for maintaining urban ecological balance and sustainable development. On the basis of surveying the green plants in Anshun city proper, the capability of sluggishing dust and disinfection involving typical plants is studied, and results show that the plant species is few, structure is unitary, species evenness is low; in terms of the index of leaf area, the order is the arbors, climbing plants, flowers and herbs, and shrubs one by one. With the time increasing, the capability of sluggishing dust is increasing for different green plants. Among them, the strongest is Rhododendron simsii that the capability of sluggishing dust reaches 6.6298g/(m²·week) four weeks late, compared with 3.3376g/(m²·week) in the end of the first week, it increases nearly two-fold; the second place belongs to Pinus massoniana, it is up to 5.7413g/(m²·week); the last place belongs to climbing plants. For the open area, the bacterial number is significantly more than that for the plant areas, 11 species of them including Cinnamomum camphora have strong bactericidal effects, their sterilization rates are above 40%.