The evaluation effectiveness of spatial distribution of population on urban climate change with emphasis on Heat Island

Physical development of cities is a dynamic and continuous process with which the horizontal and vertical development happen. This development process leads to plenty of changes in physical features on the surface of the earth, released energy, air pollution, heat and as a result climate change in cities. One of the biggest threat in urban development which leads to urban climate change is heat island. This phenomenon arises from destroying the natural covering of the surface of the earth which gives its place to roads, buildings, factories, and other urban installations. This study is done based on the evaluation effectiveness of spatial distribution of population on urban climate change on heat island operation. For this aim, the evaluation effectiveness of spatial distribution in thirteen districts in Mashhad City entropy relative coefficient is used and then the highest level of heat island by using Oke Model is calculated. After hierarchical clustering analysis, the results showed that there is relative relationship between spatial distribution of population and the heat island intensity which in some districts the relationship is direct and in some others the relationship is reversed. A more exact study with Spearman Correlation Coefficient show a direct relationship and absolute pure density of population with antecedent intensity of heat island.