Analysis on Dynamic Landscape Patterns of Urbanizations in Four Asia Cities Using 3S Technologies and CA Model

Abstract

Urbanization has brought great impact on regional landscape pattern and the food security, and it strongly affected urban ecology environment, biology diversity and human-being life. With the help of 3S technology and CA model, our research took four Asia cities respectively as the case of big cities and small cities to study the urbanize condition in Asia. First, base on the technology of remote sensing, GIS technology and the method of landscape ecology gradient analysis combined with landscape indexes, the landscape structure and its spatial characteristics of urban land, agricultural land and other land use types of Zhangjiagang City is studied in the paper; And second, Two mega-cities in Asia-Pacific Region: Manila, the Philippines and Hanoi, Vietnam, were selected to compare with Shanghai, China. In support of 3S (GIS-GPS-RS) technology, the landscape pattern dynamics and desakota regions features related with urbanization of the three cities in recent twenty years were studied, with gradient analysis using six landscape matrix indexes: Contagion index, largest patch index, landscape shape index, perimeter-area fractal dimension, patches density, and Shannon’s diversity index. In our study, we have concluded that: urbanization in Zhangjiagang is rapidly in recent years; landscape pattern changed significantly in the 20 years in Shanghai and Urbanization in Shanghai is slower than Metro Manila but faster than Hanoi; Last, large cities and small cities should be developed in perfect harmony.

This work is supported by “THE KEY PROJECT OF CHINESE NATIONAL PROGRAMS FOR FUNDAMENTAL RESEARCH AND DEVELOPMENT (973 PROGRAM, 2010CB950702), APN PROJECT (ARCP2010-14NMY-LI) AND IPDF PROJECT BY THE PROF. ODEH.