Study On The Town And Country Landscape Pattern Change During Urbanization

China is on the beginning way of rapid urbanization. The contradiction between urbanization extension and cultivated land protection, economic development and ecological environment protection is acute. So, gaining the experience of the domestic and international urbanization course, combining the national conditions of our county, the thesis analyzed and summarized the characteristic of landscape change of studying area and defined the rational land use urbanization index. Then applying landscape ecology principle, position theory, growth pole theory, pole and axle development theory, landscape of study area was planned. This study will have important values in rational utilization of land resource, alleviating the contradiction between urban extension and cultivated land protection and accelerating the healthy development of urbanization.Based on the TM image translating of Daxing district and Quzhou county in 1986~2000, supported by the RS and GIS software of Erdas, Arcview and Supermap, landscape pattern index was calculated and analyzed. The result indicates that both the landscape diversity and the fragmentation index in study area are increasing, the aggregation index are decreasing. And the non-agricultural landscape tends increasing. Rural residence landscape distributed most dispersively among all the landscape, and its per capita space is large. The inside infrastructure condition is bad and the living environment is dirty, disorderly and bad. The differences of landscape characters between Daxing district and Quzhou county are: landscape is more broken and changes more quickly, and the artificial landscape, such as the city and town, industrial and mining land and transportation land, are expanding quickly in Daxing district. The city and town expands quickly and the scale is large. But the landscape of Quzhou county changes comparatively slowly, and the rural residential area expand intensity is big. The cultivated land and rural residential area are the predominant landscape in Quzhou county.Based on the analysis of urbanization connotation and domestic and international urbanization course characteristic, the author thinks that the urbanization from land use view is: Agriculture landscape realizes the appropriate scale operation for the progress of production tools and the development of production technique; A large number of agricultural populations transfer to the cities and towns to live and work in the second and tertiary industry, which will brings a big increase of city and town area and industry and mining area; Transportation area will increase with the improvement of urbanization level, because the convenient and developed traffic is essential for a city to exchange with external world and for circulation of commodities and population flow; With the people in countryside transfer to the city, whose residence in the countryside should reduce in a large amount. So the land use urbanization index can be defined: (city and town area +industry and mining area + transportation area)/rural residential area. The correlation between land use urbanization index and population index was calculated and the coefficient was R=0.826. After the clustering and analyzing the characteristic of land use, LUUI reflected the level of the urbanization well in terms of the intensive and rational land utilization.In the end, applying "concentrate and disperse combining" principle to plan the agriculturallandscape arrangement; Applying "position theory, growth pole theory, pole and axis development theory" to plan city and town distribution, then formed the develop pattern of" one city, five towns and two axes" in Daxing district, and "a axis and multi-centres" develop structure in Quzhou county. Based on this, each landscape calss scale was predicted and planned. Which should be pointed out was that the landscape plan controlled the scale of construction land by way of disposition the inside structure and improving utilization ratio of construction land rationally in terms of developing. This w...