Nvestigation And Evaluation Of Waterfront Landscape In Qingxiu Lake Park,Nanning City

Waterfront landscape is a scarce resource in a city,and its ecological value and landscape value have a significant role in promoting urban life,as well as the perception and impression of a city.The public benefits from the public spaces and has direct access to the waterfront landscape,their evaluation is particularly important,and should be reflected in the planning and design.This paper investigates the waterfront landscape of Qingxiu Lake Park in Nanning City,selects sample points to take photos,uses the scenic beauty estimation method to determine the public aesthetic preference,analyzes and quantifies landscape elements based on the photo content,and calculates the proportion of relevant elements in the picture,through regression analysis,the relationship model between scenic beauty and landscape elements was constructed to explore the influence of waterfront landscape elements on public aesthetic preference and to provide references for urban waterfront space construction.The main conclusions of this paper are as follows:1.Calculate the SBE value of 40 sample photos and assign the landscape elements,the model was obtained by stepwise regression: Y_sbe=-36.169-275.113 X₄+5.680 X₆-17.216 X₁₀₂+15.224 X₁₃₂+44.457 X₁₄₁+42.793 X₁₄₂ +27.186 X₁₄₄+55.096 X₁₄₅+77.264 X₁₄₇+27.142 X₁₅₄+23.173 X₁₅₅+26.108 X₁₅₆+19.640 X₁₆₂-29.537 X₁₇₁,the results show that the landscape elements which influence the scenic beauty of the waterfront landscape are as follows in order of importance: the proportion of the surrounding building in the frame > plant landscape pattern >surrounding architecture style > water landscaping works> revetment type > aquatic plants>flowering plants> plant diversity.2.The selected spots included three types of scenic spots: waterfront road,seats facing the lake,and viewing platform.By comparing the SBE value of different scenic spots and analyzing the current situation of scenic spots in the park,it was found that the visual quality of some scenic spots was not good,scenic and leisure facilities should be improved.3.In the following year,the same spots were surveyed three times in different seasons,and the four-season changes of the park’s SBE values were analyzed.The results showed that the park is more beautiful in summer and autumn,compared photos of the same spot which has a big difference in four seasons,it was found that plant color,seasonal change,branch and trunk morphology of deciduous trees,flowering plants and water element movement affected the dynamic changes of scenic beauty.4.Based on the above-mentioned foundation and combined with the actual situation of the park,the related optimization strategies are put forward: manage the architectural features according to regulations,coordinate the landscape inside and outside the park;design water-friendly facilities,decorate the reservoir revetment;open up the sightline of landscape,optimize the resting space;constructing the multi-layer plant community,showing the seasonal variation of plants;and use of aquatic plants to make the wetland landscape more beautiful.