Pedosphere 19(1): 96--103, 2009
ISSN 1002-0160/CN 32-1315/P
©2009 Soil Science Society of China
Published by Elsevier B.V. and Science Press
| Urban land use change detection using multisensor satellite images |
DENG Jin-Song1 , WANG Ke1, LI Jun2 and DENG Yan-Hua3 |
1 Institute of Agricultural Remote Sensing and Information Technology, Zhejiang University, Hangzhou 310029 (China). E-mail: jsong deng@zju.edu.cn
2 Zhejiang Environmental Scientific Institute, Hangzhou 310028 (China)
3 Changsha Environmental Protection College, Changsha 410004 (China) |
| ABSTRACT |
| Due to inappropriate planning and management, accelerated urban growth and tremendous loss in land, especially cropland, have become a great challenge for sustainable urban development in China, especially in developed urban area in the coastal regions; therefore, there is an urgent need to effectively detect and monitor the land use changes and provide accurate and timely information for planning and management. In this study a method combining principal component analysis (PCA) of multisensor satellite images from SPOT (systeme pour l'observation de la terre or earth observation satellite)-5 multispectral (XS) and Landsat-7 enhanced thematic mapper (ETM) panchromatic (PAN) data, and supervised classification was used to detect and analyze the dynamics of land use changes in the city proper of Hangzhou. The overall accuracy of the land use change detection was 90.67% and Kappa index was 0.89. The results indicated that there was a considerable land use change (10.03% of the total area) in the study area from 2001 to 2003, with three major types of land use conversions: from cropland into built-up land, construction site, and water area (fish pond). Changes from orchard land into built-up land were also detected. The method described in this study is feasible and useful for detecting rapid land use change in the urban area. |
| Key Words: change detection, land use, multisensor satellite image, principal component analysis (PCA), urban area |
| Citation: Deng, J. S., Wang, K., Li, J. and Deng, Y. H. 2009. Urban land use change detection using multisensor satellite images. Pedosphere. 19(1): 96-103. |
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