The Basic Situation And Summer Environment Elements Analysis Of Tree-array Landscape In Hangzhou

Urban environment open spaces,such as urban streets,squares,parks,etc.,are the outdoor spaces necessary for people to engage in social interaction and leisure activities.The tree array landscape is a form of green organization that is widely used in the open space of contemporary cities.This paper discusses the design principles and methods of tree array landscape through field investigation and measurement analysis,combined with typical case analysis.Below are key research findings:(1)Investigating the basic situation of the tree array landscape in Hangzhou: From the application type of the tree array landscape,it is divided into three categories: the rest tree array landscape,the pass tree array landscape and the ornamental tree array landscape.From the way of creating the tree array landscape,the planting pattern and the underlying surface type are combined and further subdivided into twelve subcategories.In the Hangzhou area,the tree-line landscape is most widely used in plaza land and park land;the evergreen trees are the most used in the tree species,the deciduous trees are second,and the small trees are the least.(2)The ecological benefits of different types of tree arrays were studied: the changes of environmental factors in the tree array landscape in summer were studied through field tests,and the tree array landscape was found to have significant effects on summer temperature,humidity and illumination,etc.The area index(LAI)is positively correlated;in general,under the same greening conditions,the larger the specific heat capacity of the underlying surface,the more obvious the cooling effect;the smaller the specific heat capacity,the more obvious the humidifying effect.The effects of evergreen broad-leaved trees and deciduous broad-leaved trees on environmental factors were significantly better than those of deciduous trees.(3)The design principle of the tree array landscape is put forward: through in-depth analysis of typical tree array cases at home and abroad,combined with field investigation and analysis,according to different functional requirements,the design principles of the closed tree array landscape with shading and cooling and sufficient space are proposed;The design principle of the pass-through tree-line landscape design and the ornamental-oriented and beautiful-looking ornamental tree array landscape design principle.Combining the ornamental characteristics of plant morphology,color and seasonal phase,and summarizing the tree species selection of tree-line landscapes with different functions,and taking Jiangsu and Zhejiang provinces as examples,the common tree species of 42 tree-tree landscapes were summarized.The tree array landscape can satisfy certain viewing functions and ecological functions,and it is easy to create a strong sense of space.This kind of space is open,accessible and recreational.It is a green space that can be viewed,floated and has good ecological functions.The results will provide references for the design and construction of tree array landscape in the future.