Ecosystem Services Of The Process Of Urbanization In Xi'an

The typical takes Xi'an city district as an example, applying the theory and method of ecology and modern geography, using remote sensing data and social -economic statistical data and other related information, at the same time, combining RS and GIS technology, and evaluates the urbanization level and the ecosystem services value in Xi'an city. Through the contrastive analysis of the time and space, in order to reveal the response mechanism of urbanization and ecosystem service function. The research of urbanization and ecological system is very important,which can offer decision-making basis for future planning and provide scientific theory guidance to ecological security protection.Through analysis, the paper concluded:First:The integrated urbanization level far above other counties in Xi'an city, followed by the rest of the Yan'lang. From 1988 to 2007, the comprehensive urbanization level is enhanced in Xi'an city, for example the main city increases by 27% and the Lan'tian increases by 2.7%.At the same time, the development of urban is imbalance.Second:The change trend of ecosystem services value is fluctuates in Xi'an city from 1988 to 2007, and the value is 10.988 billion yuan in 1988 and 9.585 billion yuan in 2007, at the same time, the function of soil formation and protection is highest and the function of food production is lowest in Xi'an city.Third:In the space, the ecosystem services value is highest in the southern of Qin'ling and Tai'bai mountains and major rivers area. The ecosystem services value is higher in Qin'ling low shrubs and other loess tableland area. The ecosystem services value is low in the northern plains. Because human activities caused negative influence to the ecosystem, the ecosystem services value is lowest in the main city and surrounding towns.Forth:The city which has the highest level of urbanization is the lowest production function, and the city which has the slower level of urbanization is the highest production function. Urbanization level and the ecosystem service value is inverse proportion. The ecological functions is lowest in the highest level of urbanization, and the ecosystem function is highest in the southern of Xi'an, which has the lower urbanization level, and the northern plains and hilly area which is medium level in urbanization level is medium level in ecosystem function. The development of urbanization causes ecosystem entertainment culture function change:the entertainment culture function is higher in low level of urbanization, but with the improvement of urbanization, the entertainment culture function decreases; the entertainment cultural function of ecological system is lower in higher of urbanization.This innovation points as follows:(1)The research of the relationship between urbanization and ecological system is more, but the research on the relationship between urbanization and ecosystem service function is less. This paper study the process between urbanization and ecosystem service function.(2) Through the study of the Impact process between urbanization and ecosystem service func-tion, this paper summarized influence factors in population growth and economic development and spatial expansion.