The Greenbelt Information Distilled And Analysis On Dynamics Of Urban Greenblet Landscape In ShenZhen City Based On QuickBrid Image

This is a study about the dynamics of urban greenblet landscape in ShenZhen city since 2002,by using QuickBird imageries of year 2002 and 2005 as the data source,through many processes such as image correction,merging,distilling and classifying,this project was eventually done with the applying of some software,for instance,ENVI, ERDAS,ARCGIS,etc.Based on the information of urban greenblet map,with the help of ArcView and Excel,the current greenblet landscape structure,landscape diversity, fragmentation index,fractal dimension index,corridor density and green space transformation were analyzed in this re-search.The analysis exposed various problems of urban greenblet landscape pattern of Shenzhen city,at the end of this thesis,some suggestions were proposed which are aiming to provide scientific basis for perfecting the landscape pattern of ShenZhen city.Following are the results of this research.1.The uneven distribution of green space landscape's type in Shenzhen cityComparing to the year 2002,the total area of green space of 2005 was increased by 1%. However,the proportion of Other greenbelts still constituted as the dominate landscape.2.The Road greenbelts densities of Futian,Luohu and Yantian are comparatively highDuring 2002 to 2005,the landscape fragmentation index of Shenzhen city was between 0.00047 and 0.007618,generally speaking it indicated a lower degree of fragmentation.3.Shenzhen city has less average fractal dimensional valuesShenzhen city has less average fractal dimensional value.During 2002 to 2005,the average fractal dimensional values of this city's four regions did not change too much.4.The great potential connection between different greenbeltsThrough the comparison of galley densities,Futian has the highest galley density index in the four regions.It indicates a great potential on the connection of different greenbelts.5.The expansion of Residence greenbelts,Road greenbelts and Park greenbelts were from Non-greenbeltsDuring 2002 to 2005,the expansion of Residence greenbelts,Road greenbelts and Park greenbelts were mainly from the expansion of Non-greenbelts,Green buffer were transferred mainly from Other greenbelts,Non-greenbelts and Park greenbelts.In these 4 years, Non-greenbelts were the leading factor for the reason of the greenbelts expansion.6.Possible solutionsVarious possible solutions which are aiming to solve existing problems were proposed in this paper.●To create positive conditions for the developing of greenbelts,for example,reconstructing waste greenbelts to Park greenbelts.●To enhance the construction of large-scale and middle scale greenbelt patches. ●To enhance the greenbelts construction of Yantian,especially the Road greenbelts,Park Greenbelts and Residence Greenbelts,in order to move the current uneven reality towards a green city.●Aiming at solving the problem of less average fractal dimensional values,for the further development,people should decrease their activities among the greenbelts boundary, thereby keeping the ecological evolvement of greenbelts naturally.