POSITIVE RESEARCH TO THE ESTABLISHMENT OF URBAN RATIONAL LAND SCALE IN TYPICAL CITY,HEILONGJIANG PROVINCE——TAKING DAQING CITY AS AN EXAMPLE

Take the constructed area of typical resources city in Heilongjiang province-Daqing city as research object,use the datum of 1990-2004 to establish economy-math model.Utilize Excel software to analyze relation between urban land scale and economy development level,indicating they take on interrelation of non-linear change rule.Assuming under the same technology condition,adopt cost-benefits model to calculate the land acreage insuring optimization of urban economy benefits that is rational land scale,by calculating urban space extending degree,get the result that the existing urban land scale in Daqing is bigger than rational land scale,therefore,we should consider controlling urban land scale properly during the economy development of future in Daqing city.