Resources Science ›› 2018, Vol. 40 ›› Issue (11): 2260-2269.doi: 10.18402/resci.2018.11.12

• Orginal Article • Previous Articles     Next Articles

Spatio-temporal dynamic characterization of impervious surface in the Jiaozhou Bay based on Landsat imagery

Xi WU1, Bin GUO1(), Zhongsheng CHEN2, Wenjiao SHI3   

  1. 1. College of Geodesy and Geomatics, Shandong University of Science and Technology, Qingdao 266590, China
    2. School of Land and Resources, China West Normal University, Nanchong 637002, China
    3. Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
  • Received:2018-06-12 Revised:2018-08-24 Online:2018-11-20 Published:2018-11-12

Abstract:

Impervious surface areas (ISA) are key factor of affecting urban ecological environments. Information on ISA distribution and dynamics was useful for the planning and development of cities. This study explored a hybrid method consisting of linear spectral mixture analysis (LSMA) on the basis of vegetation-high albedo-low albedo-soil model (V-H-L-S), and regression tree (RT) for estimation of ISA in the Jiaozhou Bay. Medium-resolution remote sensing data (Landsat TM images in 1990, 1995, 2000, 2005, 2011, and Landsat OLI images in 2016) were used as basic data. Then the spatial and temporal distributions of ISA from 1990 to 2016 were identified in the Jiaozhou Bay based on the estimation of ISA. In addition, the regional development center of gravity was located by the extended index and buffer zone. The results demonstrated that the coefficients of determination (R2) of ISA in 1990, 1995, 2000, 2005, 2011, and 2016 were greater than 0.70 and their root mean square error (RMSE) were less than 16.70%. It is noted that the hybrid method consisting of LSMA and RT for estimation of ISA is feasible. The ISA increased from 105.17 km2 in 1990 to 620.02 km2 in 2016 in the Jiaozhou Bay. The expansion trend was from south to north, east to west. The area of ISA was increasing, but the increasing rate of ISA did show a little change. From 1990 to 1995, the expansion intensity of ISA was the largest, which was much larger than other periods. Downtown has always been the center of urban development, then Chengyang has become the focus of auxiliary urban since 1990. However, the trend was from Chengyang to Laoshan in 1993, Jiaozhou and Jimo in 2005, and Huangdao in 2011. This study will provide scientific foundation for the development and construction of sponge city in the Jiaozhou Bay.

Key words: development center, impervious surface areas, Landsat, spatio-temporal distribution, the Jiaozhou Bay