RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2007, Vol. 16 >> Issue (4): 430-430.

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CHANGES IN LAND USE AND LAND COVER AND THEIR EFFECT ON ECO ENVIRONMENT |IN PUDONG NEW AREA OF SHANGHAI

YIN Zhan-e-1,2-| XU Shi-yuan1   

  • Received:1900-01-01 Revised:1900-01-01 Online:2007-07-21

Abstract:

Changes in land use and cover (LUCC) and their effect on ecoenvironment have attracted more and more researchers. This paper is to reveal fast urban landuse changes during the period from 1990 to 2001 in Pudong New Area of Shanghai and their impacts on ecoenvironment by using remote sensing data. Pudong New Area of Shanghai is characteristic of fast urbanization, especially during the period from 1990 to 2001,during which Pudong has undergone a fast urban construction and growth. Using Landsat remote sensing data in 1990 and 2001, after imagery preprocessing, we retrieved land use information through supervised classification in the support of ERDAS IMAGINE software, and mapped the charts of land use classification in this period based on Landsat data. Furthermore, we established the shift matrix of land use changes, analyzed the intensity and extent of changes for land use in Pudong in the period, the pattern in spatial landuse changes, and its impacts on ecoenvironment. It is revealed that the farmland and waterbody decreased sharply from 1990 to 2001 in Pudong. Farmland decreased by 58.16% and waterbody by 17.4%. New urban growth area was mainly converted from farmland and waterbody. 55% of urban expansion was from farmland and 35.26% was from waterbody, which made the most important contribution to urban expansion. The ecoenvironmental effects of urban expansion in this study area were not optimistic. The decrease of waterbody, the pollution of water resources and air, and heat island effects were obvious problems.

Key words: Pudong District of Shanghai City, land use/cover changes, effect of ecoenvironment, remote sensing

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