Study On The Community Characteristics And Constructions Of Aquatic Plants In Guangzhou Park

Aquatic plant community is an essential element in water body construction,which can make the water body give full play ecological function and landscape effect.In recent years,more and more people tend to the aquatic plant community landscape of natural ecology,along with the construction of ecological garden and the gradual improvement of ecological demand and aesthetics.However,most of the current aquatic plant planting design only focus on plant landscape effects,ignoring the rationality and sustainability of plant community structure.In this paper,the community characteristics of aquatic plant landscape in Guangzhou Park were investigated by combining literature research with field investigation in order to provide scientific basis for the selection and allocation of aquatic plant communities in Guangzhou Park.Seven aquatic plant communities in Guangzhou Park were selected as the objects of investigation,and the general survey and sample plot investigation were carried out.In the course of investigation,the species composition,community appearance and community structure of common aquatic plant communities in the park were combed.The results showed that:(1)71 species of aquatic plants were recorded,belonging to 29 families and 51 genera.Gramineae?Cannaceae and Cyperaceae are widely used.Most of the aquatic plants are emerged plants species.Just 17% of aquatic plants species have planted in more than 5 parks.Haizhu Wetland Park has the most aquatic plant species and the most abundant community types.While the Liuhuahu park has the least species and types.There are 14 species of aquatic plant communities commonly used in Guangzhou Park and most are emerged plants.(2)The community structure of aquatic plants in Guangzhou Park: The single layer structure of community of emergent aquatic plant is the main structure,which is carried out in the form of community;the whole aquatic plant is distributed in a ring belt,and the communities were mainly composed of longitudinal coastal band band combination of different aquatic plant lamellae;the community life type is generally relatively single,and the community of one class life forms is widely distributed and widely distributed,which is mostly a single dominant water plant community;the community of two class and three class living plants is less.(3)Design methods and landscape characteristics of aquatic plant communities in Guangzhou urban parks:1)Natural planting,container planting,planting bed planting and ecological floating bed are 4 main kinds of aquatic plants' planting forms.2)Pay attention to the construction of water space,the configuration of water surface,waterfront,architectural sketches,trestle and bridge,pseudo-stone landscape five types and have their corresponding configuration characteristics.3)Landscape characteristics:The vertical ring belt assemblages of different layers of plants are dominant,forming a landscape of a meandering banded community;natural planting is the main body of water plant community,creating the natural landscape effect of wild interest;flower-watching aquatic plant community is the dominant,which has obvious landscape four time changes;it is important to combine the construction of water body space,and there are various forms of plant community configuration.(4)The success and existing problems of aquatic plant landscape design in Guangzhou Park: 1)Success includes: High planting rate and high coverage rate of aquatic plants;the landscape effect is well maintained as few invasive plants;it better combines the functions of aquatic plants to create landscapes.2)The main problem includes: Species and life forms of plant species are generally single,with simple community structure and no obvious stratification;the ecological niche and volume allocation of aquatic plant communities are unreasonable,whose landscape effect is messy;the winter landscape is sluggish,wintergreen aquatic plants are less;the biological community is single,and the community of animals and microbes is lacking;aquatic plant communities are easily disturbed,and further affects the landscape.(5)Optimization proposal,design principles and ideas of aquatic plant landscape in Guangzhou park green space : 1)The optimization recommendations include:Plant community allocation should be considered in the overall construction of biological community;according to the ecological niche,the diversity and structure of the community can be enriched by rationally collocating aquatic plants;rational collocation of seasonal landscape in aquatic plants,and selecting the configuration and planting mode of the season landscape;regulation and control of aquatic plant landscape interference factors includes water level control,aquatic plant harvesting,animal behavior management and population balance.2)Construction design principles include: Taking local plant community as a template,and planting design according to the law of nature;increasing native plant species to improve community stability and diversity;enriching plant hierarchy under reasonable ecological niche;the principle of adaptability for dynamic change.3)The idea of building design includes: A reasonable aquatic plant landscape is designed on the premise of considering the whole ecosystem;creating a landscape of aquatic plants according to the space and landscape theme of the water body;the rational design of the structure of community.