景观植物配置对生态河道污染水体的净化效果评估研究

Evaluation of Purification Effect of Polluted Water Bodies in Ecological River Courses

为明确生态河道污染水体与景观植物配置间耦合关系,提出景观植物配置对污染水体的净化效果评估研究。采用模糊数据理论建立评估指标矩阵,求解矩阵指标的最大值与最小值构建参考值系统,最大最小值作为系统输入两个极值端点,得到评估指标的隶属度函数。以美人蕉、绿萝以及马丽安三种景观植物为例,制作生态浮床,计算出植物对生态河道水体中溶解氧、高锰酸盐、氨氮、总磷污染物的去除效果,评估指标为污染物净化后的残留浓度。实验证明,所提评估模型可包容大量复杂结构数据,整体评估过程直观简单,具有一定的可行性及适用性。

In order to clarify the coupling relationship between ecological river polluted water body and landscape plant configuration,this paper proposed the evaluation method for purification effect of landscape plant configuration on polluted water body.The fuzzy data theory is used to establish the evaluation index matrix,solve the maximum and minimum values of the matrix index,and construct the reference value system.The maximum and minimum values are used as the two extreme endpoints of the system to obtain the membership function of the evaluation index.Taking Canna,green pineapple and Malian as examples,the ecological floating bed is made to calculate the removal effect of plants on dissolved oxygen,permanganate,ammonia nitrogen and total phosphorus pollutants in ecological river water.The evaluation index is the residual concentration of pollutants after purification.Experiments show that the proposed evaluation model can contain a large number of complex structural data,the overall evaluation process is intuitive and simple,and has certain feasibility and applicability.