以重庆市40个区县为研究区域,以2000,2010年为时间节点,结合DMSP/0LS灯光数据、土地利用数据和重庆市企事业单位统计数据库,计算不同时期各区县的DN总值与不同类型产业数量之间的相关系数,分析DM-SP/OLS灯光数据的DN总值与不同类型产业数据的关系.研究结果表明:结合影像自校正法和辐射定标法进行数据预处理效果较好;采用DMSP/0LS灯光数据与土地利用数据叠加的方式可以有效避免阈值设置的问题;两个时期的DN总值与不同类型产业数量之间的相关性很高,均通过了显著性检验;DN总值和房地产业之间的相关性最高;随着产业结构升级,对应的相关系数也在增大.DN总值大小在一定程度上可以反映区域产业发展及演变,为研究不同区域的产业结构提供了一种新的方法和依据,是对传统研究方法的有效补充.
In order to study regional industrial layout, this paper construct the fitting equation between the total value of DN and the number of different types of industry according to 40 districts and counties of Chongqing. This study based on DMSP/OLS lights image data, land use data and enterprises statistics database in Chongqing in 2000 and 2010. The result shows that the improved dichotomy method used in this paper may effectively improve the quality of nighttime light data. Combining self-correction method and radiometric calibration method to data pre-processing have good results. The total value of DN and the number of different types of industry has good correlation, and passed the significant test by the confidence level of 0.01. The highest correlation between the total value of DN and the number of real estate industry. The corresponding correlation coefficient also increased with the upgrading of industrial structure. The total value of DN used to reflect the different types of the structure and evolution of industrial has a good effect. This study not only extends the application of DMSP/OLS nighttime light data, but also provides a reliable method and a basis for the study on regional industrial development, and was an effective complement to traditional research methods.