陕西关中地区城市园林植物抗污能力调查分析

Investigation on Pollution Resistance of Ornamental Trees in Guanzhong Region

在调查陕西关中重工业区现有园林植物的生长、分布情况的基础上,采用Singh的大气污染忍耐指数并结合主要生理指标和叶片硫含量的测定,全面分析研究了其园林植物抗污染能力。结果表明,月季、垂柳、臭椿这3树种对SO2的抗性和吸收量都较强,可以在以SO2为主的污染区作为基调树种种植;采用Singh的大气污染忍耐指数综合评价树种抗性,大部分树种与污染区现场调查的情况基本一致。综合分析表明,臭椿、大叶黄杨、雪松、银杏、大叶女贞和国槐等6种树木的抗性较强。

In this paper,basing on growth and distribution of the existing landscape plants in Guanzhong heavy industry zone,we use air pollution tolerance index of Singh,the main physiological indicators and sulfur content in leaves,analysis of its anti-pollution ability of garden plants.The results showed：Rosa chinensis,Punica granatum and Ailanthus altissima species of SO2 absorption and the resistance are all better,so they can be planted in the contaminated area as the keynote planting trees,useing air pollution tolerance index of Singh evaluate resistantance of species,most of the trees are basically the same with investigation from contaminated areas.It indicated that Ailanthus altissima,Ilex chinensis,Cedrus deodara,Ginkgo biloba,Ligustrum lucidum,Sophora japonica were the best six species in pollution resistance.