Since the policy of reform and open up was put into practice, the spatial and temporal characteristic of HU Line transition band has received much attention from high level officials who proposed the question of how to break Hu Line phenomenon. To solve this problem, this research project set the areas within 20km from each side of this line as the research area and derived data from the Defense Meteorological Satellite Program’s Operational Linescan System (DMSP/OLS) for the year 2000, 2006 and 2012. The experience thresholding values were corrected by introducing statistical data of some sample cities in the research area. After that, the statistics were put into ArcMap to pick up the urban area in 4 buffer zones (0-5km, 5-10km, 10-15km, 15-20km) surrounding Hu Line. This research intends to estimate the extent of urbanization in different zones on both sides and the three regions in the north-south direction of Hu Line. The results show that the phenomenon of urbanization in the western Hu Line was faster recently, and the number of cities and towns in central region was much larger. Urbanization is related to a series of factors including natural conditions, strategy, policy and the industry movement from east to west.%改革开放以来，党和国家领导人高度重视胡焕庸线两侧过渡带的城镇扩张时空特征，提出了“如何打破胡焕庸线”的疑问。针对该问题，本研究以胡焕庸线东西两侧20km范围为研究区，采用2000、2006、2012年三个时相的美国DMSP/OLS的夜间灯光数据提取城镇信息，探讨距离胡焕庸线0-5km，5-10km，10-15km，15-20km四个缓冲区内的城镇动态变化及其影响因素。研究表明，西部地区的城镇化水平提升较快，中段的城镇数量要远远超过南北段地区。胡焕庸线两侧过渡带的城镇扩张时空特征与我国自然地理条件、战略规划及东部地区产业转移等因素有关。本研究有助于为东西部均衡发展政策提供依据。
展开▼
