Abstract:

Bamboo plants have good ecological benefits and high aesthetic value, but the current research on the application of bamboo plants in rain gardens is basically blank. The bamboo plant resources of 25 rain gardens in Hangzhou were analyzed by combining field research and data analysis, including application ratio, species composition, growth status, application area and configuration mode. The results showed that only 5 of the 25 rain gardens surveyed planted bamboo plants, accounting for 20%. There were only 3 species of bamboo plants, namely Bambusa multiplex cv. Alphonso-Karri, Indosasa tessellatus(Munro) P. C. Keng and Phyllostachys sulphurea var. viridis R. A. Young, among which B. multiplex cv. Alphonso-Karri is mostly used. The application area is concentrated in the marginal area and buffer zone, water storage area no application. The configuration modes are mainly group planting and patch planting. At present, the bamboo plant resources in the rain garden in Hangzhou have the problems of low application ratio, single species, insufficient application area and monotonous configuration mode. In view of the existing problems, the diversity improvement strategy, ecological suitability strategy and expansion of configuration mode strategy of rain garden bamboo plants are discussed. The research results can provide a reference for the application expansion and landscape diversity of bamboo plant resources in rain gardens and sponge city construction.

Key words: bamboo plants, rain garden, application mode, resource survey, optimization strategy, Hangzhou