The Research On The Construct Actuality Evaluation And Ecology Planning Studies Of Urban Forest Of Shenzhen

In company with the growing of population and booming of the urbanization, some environmental problems of urban increasingly extrude such as heat islandeffect, air pollution, acid rain, water pollution and sound pollution have threatened the health and existence of human. People are aware of the importance of ecological environmental construction more and more. Urban forests have nonreplaceable functions in safeguarding human's health than other basic facilities, regulating ecological balance, improving environmental quality and transfigureing townscape as a autopurification functional constituent in urban ecological system. In view of urban forests playing a more and more important role in ecology city development at new century, this paper's research on urban forest theory at home and abroad, practice and research dynamic foundation, take Shenzhen as an example, take landscape ecology, systems engineering, urban ecology, forestry and others subject for theory criteria, utilize geographic information systems software viewgis and arcview as supporting instruments, brings up a suit of evaluating indicator system for systematization, layering, efficiency, qualitative with quantification, and adopts analytic hierarchy process (AHP) turn in quantifying evaluation for urban forest construction of Shenzhen. Base on evaluation analytic outcome proceed urban forest ecology layout from two scales as city range, downtown, aim to supply science base with layout of urban forest, ascertain of develop pattern and construct standard, select and deploy of community tree species.Got out following conclusions:(1) Each evaluating indicator weight syntheses important degree proclaims that urban forest cover rate is the most important in scale eighteen term factors of urban forest construct, comes to 12.19%, the next are arbor shrub herbage incorporate degree indices and degree of fragmentation indices,come to 10.85% and 8.44% that explain it not only run up to be quantity and area enough, maintain region ecological environment security, along with need for possible arrangements urban forest structure and layout in urban forest process of construction, hereby enhance ecology quality and serve function of urban forest.(2) Base on urban forest evaluating indicator system established by this paper,...