基于叶经济谱理论的行道树与土壤重金属关系的评价方法

Evaluation of the Relationship between Street Trees and Soil Heavy Metals Based on Leaf Economic Spectrum Theory

道路系统作为城市生态系统的重要组成部分,承担着生态廊道的重要职能。植物与环境间有着密切而复杂的联系,城市道路的土壤重金属直接影响着植物生长。本研究选取了泰兴市位于不同功能区的5条城市道路进行土壤重金属污染综合评价,同时选取各研究区域共有的10种典型的行道树为实验材料,对引起叶经济谱性状变化的土壤重金属环境进行研究,并提出针对重金属污染的行道树适应性评价方法,以及道路植物配置优化策略。

As an important part of urban ecosystems,road systems assume the important function of ecological corridors.There is a close and complex connection between plants and the environment,and soil heavy metals in urban roads directly affect plant growth.In this study,five urban roads located in different functional areas of Taixing City were selected for comprehensive evaluation of soil heavy metal pollution,and 10 typical street trees common to each study area were also selected as experimental materials to study the soil heavy metal environment that caused changes in leaf economic spectral traits,and to propose an adaptive evaluation method of street trees for heavy metal pollution,as well as a strategy for optimisation of the road plant configuration.