Ecological risk assessment of exotic garden plants in the east bank of Dianchi Lake wetland park.
With 6 wetland parks on the east bank of Dianchi Lake as the research objects, the current situation of exotic garden plants was investigated through the combination of sample methods and line survey, conducted ecological risk level evaluation by multi-index analysis, and proposed corresponding control measures for different risk levels. The results showed that there are 245 species of garden plants in Dianchi Lake and 150 exotic plants, accounting for 61.2% of the total number of plants, including Asteraceae, Gramineae and Rosaceae, and the largest number of Salvia. The ecological risk evaluation results of 70 species of garden plants were 7 high, 11 medium, 52 low, and the majority of garden plants with high and medium risk grade were herbaceous plants. It is suggested to remove exotic species of high-risk garden plants, replace them with local plants that can achieve the same landscape effect, and prohibit large-scale introduction of medium-risk garden plants, exotic species of low-risk garden plants can be introduced appropriately to increase the wetland landscape effect.