八达岭秋季景观整体色彩组成对美景度的影响

从整体景观色彩的组成角度评价了八达岭林场秋季景观，以期探究视觉色彩对景观美学质量影响，进一步提出提升美学质量的方法。利用Python等软件从像素角度解译色彩信息，筛选与美景值有显著相关关系的因素，并以色彩组成因子为自变量，公众喜好度的SBE值为因变量，构建景观质量评价模型。结果表明:1）依据美景值将八达岭林场整体景观质量从高到低划分为5个等级（等级Ⅰ、等级Ⅱ、等级Ⅲ、等级Ⅳ、等级Ⅴ），美景值集中在等级Ⅱ和等级Ⅲ中，可见公众比较偏爱八达岭秋季景观；2）色彩组成因素与美景值方差分析中，明度指数（V）、邻近色（R_N）、互补色比例（R_C）、色彩多样性（H_L）和色彩均匀度（E_L）与美景度之间有显著或极显著差异；3）模型结果表明，二次多项式逐步回归模型较其他3种模型（回归模型、逐步回归模型和二次回归模型）的拟合程度高（R²=56.48%，P<0.001），能较好地描述景观整体色彩与美景度之间的关系，且美景值与V、R_N、R_C、H_L呈负相关关系，与E_L呈正相关关系。对此，在八达岭景观质量提升改造中，可降低整体色彩明度指数、色彩多样性指数、邻近色和互补色比例，增加色彩均匀度指数来提高美景度。

Effects of Color Composition in Badaling Forests on Autumn Landscape Quality

In order to explore the effect of visual color on the quality of landscape aesthetics,this paper evaluated the autumn landscape of Badaling Forestry Farm from the view of the composition of landscape color as a whole and put forward a method to improve the quality of aesthetics.Python and other softwares were used to interpret color information from pixel angle and screen factors that had a significant correlation with the beauty value and regard color composition factor.SBE value of public preference degree was used as independent variable and dependent variable to construct the landscape quality evaluation model.The results were as follows.1) The overall landscape quality of Badaling Forestry Farm was divided into 5 grades according to the beauty value (grade I to V).The beauty values were focused in grade I and grade II,indicating that the public preferred the autumn landscape in Badaling.2) Variance analysis showed that there existed significant or extremely significant differences between SBE values and the factors of lightness index,the adjacent color,the complementary color ratio,the color diversity and the color uniformity and the SBE.3) The model showed that the two order polynomial stepwise regression model had a higher fitting degree than the other three models (regression model,stepwise regression model and two regression model) (R²=56.48%，P<0.001).There was a significant or extremely significant negative correlation trend between the beauty and the V,R_N,H_L and R_C，and positive correlation trend between the beauty and E_L.It was suggested that in the improvement and transformation of Badaling landscape quality,relative factors could be reduced,such as brightness index of the whole color,the color diversity index,the adjacent color and the proportion of complementary color,and the color uniformity index could be increased.