Landscape Characteristics And Public Evaluation Of Aquatic Plants In Urban Parks

As an important part of urban public green space,urban parks provide urban residents with a good place for leisure and recreation.At the same time,they have the functions of beautifying the city and maintaining the ecological balance of the city.The aquatic plant landscape is an important part of the urban park landscape,and a healthy and beautiful aquatic plant landscape plays an important role in improving the overall landscape quality of the park and improving the tourist's recreational experience.With the development of social economy and the improvement of living standards,people are paying more and more attention to the ecological functions of landscapes while increasing the demand for landscape aesthetic feelings,which also puts forward higher requirements for aquatic plant landscapes.Research in the field is mostly in the selection of aquatic plant varieties,community building and design management,and less consideration of public preferences and psychological feelings.Therefore,this article studies and evaluates the aquatic plant landscape in urban parks from the perspective of the public.In this paper,Hefei City is taken as the research area,10 urban parks are selected as the research object,and 20 aquatic plant landscape plots are selected for each park.Plant landscape evaluation index system;meanwhile,it adopts the form of a questionnaire to statistically analyze the public evaluation of the current aquatic plant landscape in Hefei City,and explore the relationship between evaluation indexes and public preferences.The main conclusions are as follows:(1)There are about 51 species of aquatic plants used in parks in city park of Hefei belonging to 27 families and 41 genera,including 32 species of emergent plants,8 species of floating-leaved plants plants,5 species of floating plants,and 6 species of submerged plants;The aquatic plants with high frequency of application in the park are Nelumbo nucifera,Nymphaea tetragona,Hydrocharis dubia,Alternanthera Philoxeroides,etc.(2)Scientifically constructed public evaluation index model of aquatic Plant Landscape in city park of Hefei,which takes the visual effects,ecological benefits,service functions,and human values as the criterion layers,and takes 15 factors such as green view rate,aquatic plant health status,landscape viewing distance,and scene artistic conception as the indicator layers,and based on expert consultation,determined the weight value of each level of index.The weight value of the index level index is ranked as visual effect>ecological benefit> service function> humanistic value.(3)Calculate the comprehensive evaluation index of 20 aquatic plant landscape plotsand establish the evaluation level.The comprehensive evaluation index varies between0.5991 and 0.9183,with an average value of 0.7951.There are 4,7,5,and 4comprehensive evaluation grades I,II,III,and IV.It shows that the current application status of aquatic plant landscapes in city park of Hefei is uneven and needs further optimization.(4)There is a significant correlation between public age,educational background,and knowledge of botany and public evaluation,with correlation coefficients of 0.326,-1.194,and-2.312;there is no correlation between public gender and public evaluation.(5)By analyzing the models related to the evaluation indexes of aquatic plant landscape and public evaluation,it can be seen that the 15 evaluation indexes in the constructed index system have a significant correlation with the public evaluation results.Specifically:(1)In terms of visual effects,the green vision rate is 40% to 50%,the aquatic plant life diversity index is between 0.25 and 0.3,the aquatic plant ornamental index is around 0.45,and the color diversity varies significantly in seasons;the aquatic plant configuration has art The public sites that are aesthetically pleasing and harmonious with water bodies and other waterscape elements are highly rated by the public;(2)In terms of ecological benefits,the species diversity index of aquatic plants is between 0.4 and 0.6,the native nature of aquatic plants is between 25% and 30%,the plant growth state is healthy,and the water quality of the water-free and clear water samples is high;(3)In terms of service function,the landscape viewing distance is 2m,the building sketch facilities are between 10 and 15,and the sample plots with high line of sight retention have high public evaluation;(4)In terms of humanistic value,the artistic conception is far-reaching,and the sites with rich cultural connotations have received high public evaluation.