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Journal of Applied Sciences ›› 2017, Vol. 35 ›› Issue (3): 346-354.doi: 10.3969/j.issn.0255-8297.2017.03.008

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Analysis of Expansion of Port Cities in Hainan Province Based on Impervious Surface

BI Sen1,2, WANG Heng1, ZHANG Li1,2, LI Tong1, LIU Dong1, HAN Rui-dan1   

  1. 1. Key Laboratory of Digital Earth Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100094, China;
    2. Key Laboratory for Earth Observation of Hainan Province, Sanya 572029, Hainan Province,China
  • Received:2016-07-27 Revised:2016-11-25 Online:2017-05-30 Published:2017-05-30

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Abstract:

Based on Landsat TM and OLI data, integrating V-I-S and the linear spectral mixture model and some remote sensing indices such as NDBI and SAVI, this study derives impervious surface information of Haikou and Sanya of Hainan Province, and analyzes their temporal and spatial variations. During the past 15 years (1999～2015), impervious surfaces of both cities expanded from coastal areas to inland. The impervious surface of Haikou increased mainly in the southern and western areas, whereas that of Sanya increased at varied directions. As urbanization of both Haikou and Sanya proceeded at a high speed, proportions of impervious surface of these two cities have doubled. Population, GDP and impervious surface of both Haikou and Sanya rises every year, in which population increases slowly and steadily, while GDP and impervious surface increases signifcantly. By integrating a linear spectral mixture model and SAVI and NDBI indices, interference from bare soil and saline-alkali land to the information of impervious surface can be reduced, and estimation accuracy of the impervious surface improved.

Key words: remote sensing monitoring, impervious surface, Hainan Province, urban expansion, spectral mixture model

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