Spatial Congestion in Rural Areas around Tehran Metropolitan, Case Study: Roudbar Qasran

Statement of the problem:

 Due to the over-concentration of population and fund, metropolises have been portended to the surrounding areas for their growth and expansion and merging the surrounding villages and lands cause various changes including land-use conversion. These changes have created environmental hazards and caused spatial instability, so it is not possible to be prepared for the issues and challenges ahead regardless of the mentioned problems, especially about land use conversion around metropolises.

This study, analyzing the spatial congestion of rural areas, aimed to identify lands which changed their use in Roudbar, Qasran, Shemiranat by satellite images during 1986, 2001 and 2016.

It is an applied research based on descriptive- analytical method. The data was gathered by library and observation method and remote sensing method was used to analyze land use conversion during 30-year period in rural areas in Roudbar Qasran.Satellite image analysis was performed via ENVI 5.3 and ARC MAP 10.2 softwares.

The findings show the decrease of the area of mountainous and wasteland lands (13.06 %) versus the increase of the area of gardens (2.12 %), pasture (7.55 %) and constructed lands (3.39 %). Also, these findings based on the Markov Chain -CA showed that, the area of green lands (gardens and meadows), wastelands and mountainous will be decreased but constructed ones will be increased until 2031 if the current trend is continued. Results present the changes in land cover of this case study created land-use incompatibility with the environment caused by urban demand, urban sprawling, weakness of lawful control, and achieving greater profit. These kinds of changes eventuated in spatial congestion in addition to the economic and social impacts in Roudbar Qasran.

Innovation:

 In this study, spatial congestion of created land-use conversion is noticed whilst land-use conversion is considered and specified. Besides, it has been attempted to outline the future status of the region by predicting land cover and use conversion.