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Urban construction land suitability evaluation in resource-based cities: Taking the Grand Canal Ecologic and Economic Area as an example

HE Dan1,2,JIN Feng-jun1,2,ZHOU Jing3(1.Key Laboratory of Regional Sustainable Development Modeling,CAS,Beijing 100101,China;2.Institute of Geographic Sciences and Natural Resources Research,CAS,Beijing 100101,China;3.College of Environmental Sciences and Engineering,Peking University,Beijing 100871,China)  
With the speeding up of China's urbanization in recent years,some problems have emerged due to urban construction such as the conflicts between land and people,safety for human settlement,eco-environmental issues,and so on.Urban construction land suitability evaluation has aroused more attention.The rise of resource-based cities is associated with resource development.The conflict between coal mining and urban development is the long-term contradiction of coal resources cities.In view of this,the Grand Canal Ecologic and Economic Area in Jining city is taken as an example in this paper,and the index system and evaluation mode and GIS methods about the coal resources cities of land suitability evaluation are discussed.Firstly,the suitable evaluation index system contains eight factors in three aspects of natural factors,socio-economic factors and ecological safety factors.And then,using AHP to determine weights,by multivariate analysis and GIS spatial overlay analysis,four future scenarios of coal collapse are designed,and a single factor score map and the integrated evaluation map under the four scenarios are made for the study area of urban construction land suitability evaluation.Finally,evaluation results are analyzed.In addition,some countermeasures of urban development are put forward.
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