Suitability Evaluation of Urban Construction Land in Xi'an Based on Ecological Civilization

Taking urban construction land in Xi'an as an example, this paper mainly studies the evaluation index system and evaluation model of the suitability evaluation by the GIS technology. And then it studies the quantitative analysis method of land ecological suitability. By building an ecological suitability evaluation index system, this paper mainly USES the CA-MARKOV model to simulate the dynamic of construction land. Finally, the multi-factor layer was extracted, such as of forest land, cultivated land, water body and construction land in Xi'an. The results of Boolean superposition analysis were obtained by selecting the linear combination method of weights. Scope of application: The suitability of Xi'an is 44.34%, the suitable land is 33.86%, the medium suitability is 19.27%, and the suitability is worse than 2.49%. According to the results of ecological suitability evaluation, the characteristics of construction land in Xi'an were evaluated objectively, and suggestions for ecological civilization construction and urban planning and construction were put forward.