Application And Investigation Of Aquatic Plants In Changsha Ecological Park

Aquatic plant is one of the elements of waterscape, which has both good ornamental characteristics and ecological effect on improving water quality. Changsha Ecological Park is a modern landscape ecological park which integrates with sightseeing tours, leisure and entertainment, science education, seedling production, in which the water area is7.5%of a total area of the entire park. By investigating Changsha Ecological Park aquatic plant, the purpose of the thesis is to accumulate resources, lay the foundation for promoting the use of aquatic plants in Hunan gardens, and make up deficiencies of single species, monotonous means of aquatic plant in Hunan gardens. The main conclusions are as follows:1.At present, there are4types of38species aquatic plants, which belonging to20families, in Changsha Ecological Park, in which submerged plants is9.1%floating plants accounted for12.4%, floating-leaved plants accounted for19.4%, emergent plants accounting for59.1%which is in dominant.2.According to the frequency of occurrence statistics, Ceratophyllum demersum L. is the highest application frequency in submerged plants which reaches30.9%; Alisma orientale is the highest application frequency in emergent plant which reaches76.47%; Nuphar pumilum is the highest application frequency in floating plants application which reaches76.47%.3.From zoology practical considerations, the vast majority of aquatic plants adapt to the local environment, wherein the adaptability of Arundo donax var. versicolor*Phragmites australis、Thalia dealbata、Pumilum、Limnanthemum nymphoides Hoffmgg. et Link is to A. Pistia stratiotes L.、Eichhornia crassipes have the ecological security problem.On the foundation of investigation and study, the paper pointed out some existing problems in configuration of aquatic plants in Changsha Ecological Park, and put forward relevant suggestions for improvement, in order to give full play to the role of aquatic plants in Changsha Ecological Park Landscape.