| Urban parks are the bridge between cities and nature,and the link between human and nature.They are closely related to the development of cities and human life.As an important part of urban parks,forest landscape is a leading factor affecting public access to parks,and plays an irreplaceable role in meeting people's green needs,improving human health and regulating microclimate.Therefore,in order to improve the quality of forest landscape and provide a reference for the future green space of new parks,this study uses the scenic evaluation method,taking into account the factors such as passenger flow and road width,and takes 10 parks in Beijing urban area as an example,selects 100 typical plots,and takes the summer,summer,autumn and Autumn scenic spots of forest landscape as the research objects,and studies the forest landscape of urban parks in summer,mid-summer,mid-autumn and mid-autumn.This paper investigates the degree of public aesthetic preference of forest landscape,establishes the evaluation model of forest landscape in summer and autumn in Beijing urban park,and analyses the beauty degree from three factors:season,ornamental distance and vegetation type.The main results are as follows:(1)By using the multiple linear regression program of SPSS22.0 software,12 landscape elements were screened,and the landscape factors that had great influence on summer landscape were concluded as follows:life-form composition(X2),accessibility(X5),green ratio(X10),canopy characteristics(X11),and road proportion(X12).Based on this,a summer landscape evaluation model was established(F=4.699,corresponding P=0.000<0.01).Y=-0.481+0.062X2-1+0.05X2-2-0.56X2-3-1.355X5-1-0.200X5-2+0.179X5-4-0.986X10-1-0.524X10.2+0.108X10-3+0.350X10-4+0.571X11-1i+0.666X11-2+0.662X11-3+0.514X11-4+0.195X12-1+0.641X12-2.Landscape factors influencing autumn landscape are color number(X1),life form composition(X2),accessibility(X5),green ratio(X10)and road proportion(X12).Based on this,autumn landscape evaluation model is established(F=6.276,corresponding P=0.000<0.01).Y=-0.612-0.017X1-1+0.042X1-2+0.117Xi.3+0.079X1-4-0.051X2-1+0.02X2-2+0.336X2.3+0.089X2-4+0.111X5-1+0.536X5-2+1.094X5-3+0.16 X5-4-0.260X10-1-0.217X10.2+0.309X10-4+0.053Xi2-i-0.048X12-2.(2)By analyzing the scenic beauty of different seasons at different points at the same distance,it is found that withered branches in autumn will obviously reduce the scenic beauty value of the landscape;high-quality landscape background will improve the scenic beauty value of the landscape;when other conditions remain unchanged,the quality of foreground herbs determines the level of the scenic beauty of the autumn landscape.(3)Analyzing the scenic beauty of different distances at different points in the same season,it is found that with high-quality herbaceous plants as the foreground,increasing the proportion of herbaceous plants appropriately will improve the scenic value of the landscape;uneven plant planting density will reduce the scenic value of the close-range landscape;the proportion of individual plants in the close-range landscape will reduce the scenic value of the landscape;bare land will reduce the mid-range landscape;The appropriate increase in the number of colours helps to improve the value of landscape beauty.(4)Evaluating and analyzing the typical plant communities of different vegetation types,we found that the landscape beauty of bamboo forest was not affected by season,but was higher in summer and autumn;the SBE value of deciduous broad-leaved forest was lower in autumn close-range and mid-range due to the change of seasonal phase,and the litter was the main factor for the decline of landscape beauty of deciduous broad-leaved forest sample land;the evergreen coniferous forest was near in summer and autumn.SBE values in landscape are generally low. |
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