A Preliminary Study On The Tree Species Planning Of The Hilly Region And The Coastal Town Of Taihu Lake Of Southern Jiangsu Province (AREA E)

The urban landscape tree species planning is an indispensable part of the urban green space system planning.In the current trend of urban landscape development,ecological civilization and environmental improvement became keywords of green system construction.On the basis of our province's preliminary landscaping work achieving good results,this study focus on kinds of the main environmental problems the urban development process faced(air pollution,water pollution)in recent years and requirements of urban landscape stress on ecological function of Jiangsu province,start from survey the adaptability of urban landscape plant,to carry out targeted urban landscape plants and their ecological adaptability of different configuration modes,research to reduce air pollution such as SO2,chlorine gas,H2S and water pollution like eutrophication,mainly heavy metals.In the direction of urban ecology,phytocoenology,landscape aesthetics,landscape ecology and other disciplines,take the typical plant communities,typical urban trees of the hilly region and the coastal town of Taihu Lake of southern Jiangsu province(area E)as a scientific basis,we collected urban adaptive tree species information,investigate typical plant community and urban landscape tree species application status of Jiangsu province,then analyze them comprehensively,on this basis,this thesis planned cityscape adaptive tree species scientifically of the hilly region and the coastal town of Taihu Lake of southern Jiangsu province(area E)from the ecological habits,ability to adapt to pollution and biodiversity protection these three aspects.The study have a instructive meaning to the construction and improvement of urban green space system,as well as exert the ecological benefits of urban green space of the hilly region of southern Jiangsu province and the coastal town of Taihu Lake area(area E).The main results are as follows:1.This thesis has studied the status of tree species planning home and abroad,and progress of the hilly region of southern Jiangsu province and the coastal town of Taihu Lake area(area E) the application status of landscape tree species data collection and field surveys,then analyzed and explained the necessity and significance of tree species planning for the region.2.Based on ecological adaptability,resistance and protection of biodiversity,We carried out a detailed plan of landscape adaptive tree species for the hilly region and the coastal town of Taihu Lake of southern Jiangsu province(area E).In the ecological adaptability viewpoint,from the ability to adapt to light,water and soil of several aspects of the plan;in the resistance point of view,from inorganic anti-pollution,heavy metal pollution and contamination of organic macromolecules three aspects of the plan;in the biodiversity protection point of view,the recommended proportion of tree species,as well as the recommended dominant species,constructive species and companion species were proposed,which provide reference for different types of green tree species selection.3.Based on the previous studies of Jiangsu province landscape tree species division of the five regional basis,depending on the regional climate,soil,topography of the hilly region and the coastal town of Taihu Lake of southern Jiangsu province(area E),tree spices planning in the region was completely planned.The ratio between different tree species were planned--the proportion between gymnosperms and angiosperms,evergreen species and deciduous species,as well as trees and shrubs.The tree species is divided into dominant species,constructive species and companion species,and the general tree species were subdivided into four categories,which were species of flower,fruit,foliage and street trees.species of flower were divided into early spring flower species,spring flower species,summer flower species,autumn flower species and winter flower species five categories,species of ornamental fruit were divided into summer,autumn and winter ornamental fruit three categories,species of foliage were divided into spring leaf color,autumn leaf color changed early,autumn leaf color changed late and regular color leaves four categories.At last landscape tree species list of the hilly region and the coastal town of Taihu Lake of southern Jiangsu province(area E)was concluded.4.Problems existing in landscape tree species application of the hilly region of southern and coastal towns of Taihu Lake were summed up,such as plant diversity needs to be strengthened,local characteristics are not prominent,green form is relatively monotonous,the tree species application is not reasonable and species conservation management is not in place,and the corresponding countermeasures were put forward.At the same time,in this paper made a summary and classification of tree species resources in the hilly region and the coastal town of Taihu Lake of southern Jiangsu province(area E),which provide reference for green space system construction of this area.5.Different types of green space were analyzed,and the future development direction of tree species planning was proposed,which have some reference significances to the construction and improvement of urban green space system of the hilly region and the coastal town of Taihu Lake of southern Jiangsu province(area E).