APPLICATION STATUS AND EVALUATION OPTIMIZATION OF THE PLANTS IN BEIJING LID FACILITIES

Plants are the basic constituent units of sponge facilities, and their growth and application status greatly affects the function and performance of sponge facilities. This article took the plant landscape of 72 low impact development (LID) facilities in 21 sponge city projects in Beijing as research objects and conducted post-completion evaluation. Through field survey, the species and applying frequency of plants in LID facilities, configuration mode, ornamental characteristics, growth status and existing problems were summarized; analytical hierarchy process (AHP) was used to construct an LID facility plant landscape evaluation system from three aspects, plant ecological habits, rainwater functionality and ornamental properties; the constructed evaluation system was used to rate 10 plant communities for typical LID facilities in Beijing. Based on the results of the evaluation and analysis, the plant configuration with high comprehensive benefits and optimization approaches were proposed, to provide a reference for the plant landscape improvement of LID facilities in Beijing and northern China.