Yangzhou City Green Space System Of Remote Sensing Monitoring And Analysis

With the faster development of urbanization,prodigious changes has occurred to land use/coverge in the city whereabouts.City greenland is a subsysterm of city ecosysterm,which is main nature element of city, the survey and control of city's greenland become an important task of city planning.Put the RS technology into the extraction of city greenbelt systerm,it can master greenland coverage area dynamicly,optimize greenland space configuration,heighten sustainable development potential of city.Study area lies in YangZhou city which developing quickly now.On the basis of collecting and summarizing literatures,the RS data I used is some different times Landsat TM data,CCD data of CBERS-02 and high resolution data of CERS-02, Firstly,take the information extraction of land use types of the city by the use of appropriate methods,and then,monitoring and analysis the change of greenland systerm in YangZhou.1. On the basis of geometry registration ,enhancement and subset for images,the paper studies the information extraction mechanism and approach on mostly object of the city.Extract city greenland information by the use of multitemporal and multi-vegetation index,Extract city building information by the use of unsupvised classification,Extract city water information by the use of decision tree classification, reveal the road information take the advantage of multi-filtering on linear object extraction,and then tracked and Analyze the dynamic change and status quo of different types of greenland in yangzhou.Study found:(1)The urbanization of YangZhou is fast,annual growth rate of building was 11.31% from 2002 to 2007,there was 8.67% more than which of 1989-2002;(2)The city greenland rate was 37.0% in 2006,it beyonded the standard of nation garden city (32.0%) much more,there was 2.7% more than which of 2003,the annual growth rate was 0.9%;(3)The proportion of water area in the whole area was 16.2% in 1989,13.9% in 2002,there was 2.3% less than 1989;(4)There had 3 times increase in road area during 1989 to 2003.2. Using survey data validate the status in quo and change of commonality greenland,park greenland,water net characteristic sight belt,residential greenland,roadway greenland in YangZhou.Analyse YangZhou how to use self-advantage to develop it's greenland building,protect it's traditional civilization heritage in effect,establish nation garden city with district characteristic.The data of statistic bureau indicate that: The area of greenland was 2625.26ha,greenland rate was 37.5%,communal greenlan area per capita was 10.4 m2 .Aiming at the status in qua of faster urbanization , YangZhou put solid virescence and roof virescence in practice actively,develop virescence room in limited ground; YangZhou made virescence close the river, built hundreds of thousands of shore gardens greenbelts; YangZhou made virescence close the road,both sides of central roads lay 15-45meters greenbelt,the greenland rate all beyond 40%;...