城市绿地系统植物生态功能评价及其应用——以苏州市为例

Evaluation on Ecological Function and Its Applications of the Urban Green Land System Plants:——a Case Study of Suzhou

城市绿地植物作为城市生态系统的重要组成,在改善城市生存环境和维持生态平衡方面发挥着重要作用,在城市生态系统中具有其他子系统不可替代的特殊生态功能。文章以苏州市为例,采取分层随机抽样调查的方法选取了道路、公园、居住小区共计30个具有代表性的样本区进行调查,并结合苏州市实际情况,筛选出吸硫能力、滞尘能力、抗污能力、增湿能力、环境卫生等9个评价指标,运用综合指数评价法对30个样本区中40种常见植物进行评价。结果表明苏州市绿地系统植物生长现状及其总体生态功能较好,绿化植物综合评价指数达到中等以上水平的占80%,其中乔木占所调查乔木总数的100%。文章最后对苏州市绿地系统结构优化及植物物种配置等方面提出了建议。

As an important component, the creation of urban Greenland ecosystem plants have a vital function in improving urban living environment and maintaining ecological balance. It has special ecological function with irreplaceable other subsystems in the urban ecosystem by the ground system. In this paper, take Suzhou as an example, take the stratified random sampling method selected for the survey of roads, parks, residential quarters with a total of 30 representative samples of the district to conduct an investigation. Combined with the actual situation in Suzhou, adopting nine assessment indexes such as sulfur absorption capacity, Dust capacity, fouling the capacity of humidifying capacity, environmental health indicators, 30 samples of 40 kinds of common area plants were implemented by the comprehensive evaluation. The results show that the status of urban green land system plant growth and the overall ecological function of Suzhou is better, Comprehensive evaluation index of green plants to achieve more than the middle level of 80% , which accounted for the tree survey 100 percent of the total number of trees. In the last of the article, it gives some advice on structure optimization and Species Configuration of plants about Suzhou green space system.