基于珞珈一号卫星夜间灯光数据的郑州建成区识别与分析

Identification and analysis of built-up area in Zhengzhou based on the night light data of Luojia-1

针对城市建成区面积变化影响着城市发展规划的问题,国家和地方政府对建成区的有效识别与分析的需求日益迫切。本文利用珞珈一号卫星夜间遥感影像数据,通过经验阈值法对郑州建成区进行识别,将识别后的结果分区统计,计算出各县区灯光的覆盖面积,利用各县区同年的国内生产总值(GDP)、建成区面积和三个月的平均灯光面积进行线性回归。结果表明,GDP和建成区面积同灯光面积的变化有密切关系。该研究结果可以为郑州市政府对近期的土地合理利用和生态文明的制度建设提供相关的数据支撑。

In view of the problem that the change of urban built-up area affects the urban development planning,it is increasingly urgent for the national and local governments to identify and analyze built-up area effectively.This paper applied Luojia-1 satellite remote sensing image data at night,through the empirical threshold method to identify the built-up area of Zhengzhou,and calculated the light coverage area of each county by partition statistics after identification.The linear regression was carried out using the GDP of each county in the same year,built-up area and average light area of three months.The results showed that GDP and built-up area were closely related to the change of light area.The results of this study could provide relevant data support for the recent rational land use and ecological civilization system construction of Zhengzhou municipal government.