Study On Control Index Of Urban Forest And Green Space Planning Based On Ecological Function--Based On The Case Of Nanjing

The thesis studies the important function of urban forest and green space in Nanjing improvement ecological environment,emphasis on absorbing dustfull and sulphur dioxide capability,standing pool, contents of N and P, water holding capacity , absorbing heavy metal capacity of forest floor litter, combined others ' study, layout the proper area of urban forest and green space and control index system of forest and green space planning in Nanjing. The results show:(1)There is difference between the absorbing dustfull capability of different greening species.The order of atmospheric environment is:Meishan Iron and Steel Factory , Ning-Zhen HighwayL layer.The order of heavy metal content in different spots is:urban district, outer suburbs>city suburbs.The order of different heavy metal content in forest floor litter is :Zn>Cr>Pb>Cu>Cd.(4)The percent 45(equal area 29.322 X 104 ha) of the urban forest and green space cover rate is proper for Nanjing.