Study On Application Of Aquatic Plants In Guangzhou Wetland Park

Wetland is "The Lungs of The Earth",which is not only a high landscape effect,but also there is obvious ecological functions more importantly.In the wetland environment,the aquatic plants play a vital role in the wetland ecosystem.Therefore,we should pay more attention to the wetland park and further strengthen the research on the aquatic plants.The paper is based on the investigation and the analysis of three typical types of urban wetland parks(Haizhu Wetland Park,Nansha Wetland Park and Dasha River Wetland Park)in Guangzhou C ity.It mainly includes the investigation and utilization of aquatic plant species and their combinatorial study with aquatic plant species selection and configuration evaluation analysis,and to discuss the lack of discussion in Guangzhou C ity Wetland Park.The following conclusions:First,through the field survey of the three Wetland Park,there were 31 species of aquatic plants,and belonging to 18 families.The number of aquatic plant spec ies used in different life types,its size was emergent plants>floating plants(floating leaf)> submerged plants.In the average frequency of application.The highest average frequency of emergent plants was Thalia dealbata,the highest average frequency o f floating plants(floating leaf)was Nymphaea alba,and the highest average frequency of submerged plants was Ceratophyllum demersum.Second,these aquatic plants were planted in the waters of various areas,such as lakeside shallow water,streams,shallow lakes or ponds,lake riverside,lake centers,swampy soils or shallow water layers.The mainly types of aquatic plants in wetland parks are: a.Acorus calamus + Arundo donax + Phragmites australis,b.Arundo donax + Schoenoplectus tabernaemontani + Schoenoplectus tabernaemontani,c.Phragmites australis + Myriophyllum verticillatum + Thalia dealbata,and so on.The phenological period of aquatic plants in wetland park shows that the phenological period of aquatic plants is basically divided into five stages: germination period 3-4 months,growth period 3-7 months,ornamental period 4-11 months,withering period 11-12 months and Dormancy period 1-2 months.Third,AHP is used to analyze the landscape configuration of Haizhu Wetland Park,Nansha Wetland Park,and Dasha River Wetland Park.The landscape configuration of Haizhu Wetland Park 4.54)is the highest,followed by Nansha Wetland Park(4.43)and Dashahe Wetland Park(4.01)at last.Fourth,the mainly discussion of aquatic plants in the wetland park,mainly including plant species,plant configuration is less formal,community structure is relatively single,no good enough to effective wetland ecological effecte.Besides,there are also certain of the phenomenon of aquatic plant invasion and hidden dangers.Therefore,We can strengthen wetland park aquatic plant species selection,in-depth studies of aquatic plant configuration mode,strengthen the wetland park ecological effect,improve the aquatic plant invasion risk assessment and ensure the safety of t he wetland park,the water quality in many ways,such as a comprehensive solution.In this paper,through investigation and analysis of the current urban wetland parks in Guangzhou aquatic plant application situation,points out the existing problems and puts forward related suggestions,aimed at providing some reference suggestions to Guangzhou wetland park construction and development.