The Studies On The "Arbor Three-dimensional Vegetation Quantity" Of Wuhan Based On RS

Urbanization is one of the most important social and economic phenomena today. Along with it there are four processes, such as the economical development, the population growth, the spatial expansion and enhancement of life level, relate and accelerate mutually. The urban eco-environment problem receives people's attention increasingly in the series of processes day by day. It has already became the directions of city's development that to construct scientific and reasonable urban green space system and green space, to satisfy the needs of human settlements and survival, co-existence between city and nature, harmonious existence between humans and nature, and to buck for communal development the city and the environment"Three-dimensional vegetation quantity" was proposed as a new mentality and theory in the research of urban green space and its indices. It is a scientific method and instrumentality to weight the ecology function of urban green space and urban greening needing grosses in practice of urban planning and urban greening. Along with the superiority of GIS and RS was showed in urban research day and day, GIS and RS have showed their characteristics, such as efficient, scientific, precise, visual. They were already became important way and method in the research of urban green space.This thesis took the south of The Sheshan scenic area and The Ziyanghu Park, which is in the center of Wuhan, as research district. Choose tens kinds of arbor and shrub, which are most widely distributing in area, as objects of study. On the base of practical measurement, calculation and statistic analysis for data, this research studied mainly greening species's model of measure three-dimensional vegetation quantity based RS in the research district, obtained the correlative equation of "diameter-height" of crown for arbor and the equations to calculate "three-dimensional vegetation quantity" for tree's crown of research district, and calculated the three-dimensional vegetation quantity of research area.The research area has been the main arbor (Example) Platycladus orientalis: y=1╱((0.11659+1.4265(?))^-0.6x) and Ligustrum lucidum: y=1╱((0.17751+1.707(?))^-0.91x) A total of 12 species of the "diameter-height" equations.Carve up 4 areas in research district and calculated the three-dimensional vegetation quantity. In the 95% confidence level for the precision of 4 areas's three-dimensional vegetation quantity were 87.6%, 83.5%, 82.8% and 84.6%, are up 80%. Therefore, the method can promote the use of Wuhan City. Give the following proposals to Wuhan for construction of green space: 1. choose three-dimensional vegetation quantity as city green indicators; 2. change a single urban green space; 3. attention to the selection of tree species and plant configuration.