كليدواژه :
فرآيند سلسله مراتبي , كرج , توسعه فيزيكي , تناسب زمين , پهنه بندي , سيستم اطلاعات جغرافيايي
چكيده لاتين :
One of the basic problems of metropolitans & great cities is rapid population growth & physical development. For appropriate control of physical development & urban expansion, it is necessary that moreover socio-economic analysis, recognition & accurate analysis of earth properties is available. Assessment of land suitability can be useful for spatial & urban planning. The aim of this study is to recognize susceptible area for physical development in karaj city & suburbs on the base of natural factors. These factors & materials include topographic, geologic, land cover/land use, seismologic maps and related data concerning the climate and population of the area. Library studies are complementary data indeed. The assessment of land suitability was carried out by nine natural factors consisting: slope, lithology, distance from faults, capability for agriculture, seismology, distance from rivers, land cover/land use, depth of groundwater, type of landform and Analytic Hierarchy Process (AHP) method in geographic information system (GIS). Land suitability is classified into five classes: very high, high, moderate, low, very low and its zonation map was illustrated. The results show that apart from agricultural lands, 31% of the area is settled in very high and high classes that further are located in south & west of area. Results show that in 3 recent decades urban development is occurred more on very high and high suitability classes. In spite of this subject, about 500 hectares of urban texture is developed in low & very low suitability classes in the rapid slopes & margin of mountains.
