公園植栽設計原則中常認為幾何式設計之美給人整齊、嚴肅、莊重、不自然感覺，而自然式設計之美為表現自然、悠閒情趣。本研究主要驗證此設計原則和民眾知覺的關係，以配置和樹形為操作變項模擬出十六張不同都市植栽景觀後，以問卷對學生進行四項環境知覺與偏好測試。主要結論為：1.樹形愈開展則民眾知覺到的舒適悠閒、自然優美愈高，而越低度開展之樹形知覺到的莊嚴肅穆、整齊有序愈高。2.民眾對對植配置植拎環境之四項環境知覺評值高於叢植配置植栽環境。3.四項環境知覺皆為有效的偏好預測指標，舒適悠閒與自然優美環境知覺和偏好的關係性高，而莊嚴肅穆、整齊有序之環境知覺對偏好影響較低。4.變異數分析結果顯示樹形對偏好影響最大，而在心理物理模式中，和紡錘形相較下，以開展形影響最大，其次為圓錐形。

One principle of planting design in urban park proposes that people receive neat, solemn and artificial perceptions in the geometrical style park, and receive natural, comfortable perceptions in the natural style park. The purpose of this study was to explore the relationship between the principle and public perceptions. The operational variables were “arrangement of plant” and “tree form”. Sixteen simulated photos were used for students’ question-naire. Participants assessed the preference and four perceptive attributes of comfort, solemnity, picturesqueness, and neatness about each photograph. The results are summarized as following: 1.Different tree form plants significantly influenced environmental perceptions and preference. The wider tree canopies had more positive effects on comfort, picturesqueness and preference, and had more negative effects on solemnity and neatness. 2.Different arrangements of plants significantly influenced environmental perceptions and preference. The space created by two row of planting with symmetry and more positive effects on comfort, solemnity, picturesqueness, neatness and preference than natural planting. 3.With environmental perceptions as regression inputs of the visual preference, the four attributes were significant predictors. Comfort and picturesqueness were more significant predictors than solemnity and neatness. 4.Tree form was the main factor that had influences on preference. On the psychophysical model, the spreading or pyramidal form was more preferred than fastigiate form.