• 论文 •

### 晋陕蒙能源区城镇化过程及其对生态环境的影响

1. 1. 西北大学城市与环境学院, 西安710127;
2. 陕西师范大学旅游与环境学院, 西安710062
• 收稿日期:2012-07-02 修回日期:2013-02-10 出版日期:2013-11-10 发布日期:2013-11-10
• 通讯作者: 吴文恒（1977- ），男，江苏邳州人，副教授，博士。从事区域发展与区域规划研究。E-mail：wuwh@nwu.edu.cn E-mail:wuwh@nwu.edu.cn
• 作者简介:刘焱序（1988- ），男，陕西西安人，硕士研究生。主要从事GIS与生态安全研究。E-mail：liuyanxu00777@126.com
• 基金资助:
国家自然科学基金项目（41101555）

### Urban process and its eco-environmental impact in Shanxi-Shaanxi-Inner Mongolia energy area

LIU Yanxu1,2, WU Wenheng1, WEN Xiaojin1, ZHANG Donghai2

1. 1. School of Urban and Environmental Sciences, Northwest University, Xi'an 710127, China;
2. School of Tourism and Environment Sciences, Shaanxi Normal University, Xi'an 710062, China
• Received:2012-07-02 Revised:2013-02-10 Online:2013-11-10 Published:2013-11-10

Abstract: Nowadays, urbanization is becoming a comprehensive subject in the process of socioeconomic development in China. So it is significant to probe into the urbanization process and its eco-environmental effect. As we know, the night light intensity index may reflect the change of urban population, economic strength and infrastructure construction. So in this paper, a group of DPMS/OLS data for continuous years (1992-2009) has been used to study the process and pattern of urbanization in Shanxi-Shaanxi-Inner Mongolia (Jin-Shaan-Meng) energy area. Furthermore, a line chart of urbanization pattern indices is made, which might reflect the dynamic conditions of urbanization in the energy area. The result shows that the total intensity of the urbanization process has been increased continuously, but the urbanization intensity of unit area is fluctuant and inconsistent. The changing trend of urbanization pattern tends to be the complex edges, as well as the decentralized layout. The distribution might be relative to the dispersive patterns of mining areas. Net primary productivity (NPP) value is taken as a representative of the ecological service for carbon fixation and oxygen release. The NPP value and urbanization intensity are both growing in most of the areas, though in a few of the areas the urbanization intensity grows very fast, while the NPP value comes to fall. This phenomenon indicates that although the ecological effect of vegetation is declining in some zones due to the increase of the impervious surface area, the urbanization process does not minimize the overall regional ecological effect. Moreover, the differences of the NPP value between the edge area and the outside area are small, which are only caused by the inferior natural conditions in the whole region. On the contrary, in the central area for human activities, the eco-environmental effect is recovered. In the arid area, a good eco-environment will become an objective demand in the urbanization process when the economic property has been accumulated to a certain extent. What's more, both the good environment demand and enough economic property can availably promote the ecological construction. Of course, the positive conclusion can be drawn through the short-term data analysis of urbanization, but the whole vegetation ecological effect cannot be extrapolated on time scale. The difference between short-term urbanization process and long-term irreversible urbanization behavior should be noticed, and more consideration of ecological restoration in energy area is surely in need at present.