RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2005, Vol. 14 >> Issue (5): 649-654.

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LAND USE DYNAMIC ANALYSIS IN THE JINGJIANG FLOODDIVERSION DISTRICT, YANGTZE RIVER, CHINA

YUAN Feng1,2,JIANG Tong1   

  • Received:2005-03-02 Revised:2005-05-28 Online:2005-09-20
  • Contact: YUAN Feng

Abstract: Types of land uses were extracted from remote sensing images obtained in 1986, 1996 and 2002. The land use conversion matrixes in the study area over two time periods, i.e. 1986~1996 and 1996~2002, were obtained and analyzed based on GIS. The spatialtemporal changes of land uses in Jingjiang flood diversion district show that the settlement and builtup areas underwent changes from farmlands and forest lands and increased distinctly by 9.66% per year in the last 17 years. Forestland was reduced obviously in a large scale, and was converted to farm lands and settlement and builtup areas. In the study area, dry lands and paddy fields were converted from one to the other in different years, which was mainly based on the crop price in different years. Water surface and bottomlands decreased by 1.85% and 3.34% per year. The main driving force of land use changes is the policy shifts due to the demand of socialeconomic development and population growth. As an important position in the Yangtze River flood protection, Jingjiang flood diversion district should take special polices different from the protected areas, with the regulation of the landuse structure and the control of populations, and sustainable development.

Key words: land use, dynamic analysis, jingjiang flood diversion district

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