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Urban Expand Reseach Of Huhhot In The Recent Twenty Years

Posted on:2009-08-22Degree:MasterType:Thesis
Country:ChinaCandidate:J W DiFull Text:PDF
GTID:2189360245987141Subject:Ecology
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Urbanization is one of the important social phenomena all over the world, urban expand is the most significant spatial feature of urbanization, and one of the most important measure index. Studying on driving force and character of urban expand and proposing optimized allocation of landuse countermeasure has great significance to city health and sustained development. Huhhot is the capital city of the Inner Mongolia Autonomous Region and occupies an important position at western development strategy. Study on Urban expand in Huhhot has important reference value to the Inner Mongolia Autonomous Region even the entire western region.In this paper, the study area is within Huhhot Ring Expressway. TM and UTM remote sensing data of 1987, 1997, 2006a were used to study urban expand in Huhhot by 3S technology. The results show that: urban construction land expand significantly in Huhhot from 1987 to 2006a, respectively 8001.95ha and 20491.76ha. Accelerating trends was showed. The author took the cross point of the city transverse axis (xinhua street) and the longitudinal axis (xilin north-south road) as the center for space quadrant to analyze the urban expand. The results showed that the urban construction land expanded slowly in northwest and north; The main direction of urban construction land expand is due east, southeast, southwest. Analysis of urban expand pattern by buffer zone method, which showed that axially expand pattern was along main city traffic during 1987-2006a. Main areas of urban expand were Second Ring internal and external areas where development zones were gathered. The development zone which is far away from city is new growth point of urban expand to form leaping city layout.In order to analyze the landuse change in the urban expand process of Huhhot the paper extracted the landuse data of three periods. The results showed that: the other types of landuse are reduced except woodland with the increase of the city construction land. Farmland is a major source of the urban expand, respectively 81.54 percent, 75.89 percent of new urban construction land came from farmland, 1987-1997a and 1997-2006a. Grassland, discarded land, water body which reduced mainly converted to farmland and secondly to urban construction land. Comprehensive dynamic degree of landuse were 16.59 and 23.08 indicates that landuse change is dramatic. The landuse intensity of change R is bigger than zero, which indicates landuse is in developing period.Driving factor can be summarized as natural geography factor and socio-economic factor. Natural geography factor is basis of urban expand in Huhhot, such as topography, geology and water resource, etc. Socio-economic factor is an important driving factor for urban expand, such as urban population increase, economic development, development zone construction, traffic condition, etc. The main direction of urban expand was decided by natural geography factor. Urban expand is mainly to south. North should be controlled. East and west should be developed moderately. The potential, direction, speed, pattern and space structure of urban expand were directly affected by socio-economic factors.
Keywords/Search Tags:Huhhot, urban expand, land use, driving factor
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