Professor Howard Zebker

Fall 2001-2002

Date: Wednesday, October 24, 2001
Time: 4:15 PM; Refreshments at 4:00 PM
Location: 460-334

Monitoring urban growth in the Pearl River Delta using Landsat TM

Dr. Karen Seto
Center for Environmental Science and Policy, Institute for International Studies, Stanford University


The Pearl River Delta in the People's Republic of China is experiencing unprecedented rates of economic growth and urban expansion. To analyze these land-use changes, nine Landsat Thematic Mapper images from 1988 to 1996 are used to evaluate two urban growth algorithms. The first technique uses change vectors of Tasseled Cap brightness, greenness, and wetness combined with Tasseled Cap values from the initial date of imagery to map four stable classes and two urban growth classes. The second method uses a multi-date normalized difference vegetation index (NDVI) to identify areas of urban growth and reduced agricultural productivity. Results from both techniques indicate that urban areas have increased by more than 300% between 1988 and 1996, most of which was converted from agricultural land