Evaluation of Urban Land Sustainable Use in Hu′nan Province Based on Improved Grey Relational Analysis

An evaluation index system of sustainable urban land use was established from the three aspects of resource environment,economic development and social harmony and the improved grey relational analysis was adopted to evaluate the sustainable urban land use in Hu′nan Province.Results show that:(1)The status of urban land sustainable use experienced from a lower level to a higher level in Hu′nan Province from 2000to 2010,but there was still a large space for improvement.(2)The most important factor affecting sustainable urban land use was the resource environment,followed by social harmony and economic development.(3)Overall,the gray relating degree for the three sub-goals increased,but the sub-goal of social harmony fluctuated greatly.To improve the level of sustainable urban land use,people should further accelerate the economic development,explore the potential of urban land use,optimize the structure of urban land use,strengthen environmental protection,speed up the urban traffic and infrastructure construction,and increase the proportion of land for public facilities.