1. College of Southeast Land Management, Zhejiang University, Hangzhou 310029; 2. Department of Geography, East China Normal University, Shanghai 200062, China
Because of the multiplicity in spatial pattern and ecological processes, scale plays an important role to understanding the pattern-process interactions and, indeed, becomes one of the corner-stone in landscape ecology. Based on the research of Shanghai city, this paper studies the pattern characteritics at different grains by using the methods of landscape ecology; and the semi-variogram is used to analyze the pattern characters at different extents. The results of analysis indicate:(1)Ddifferent landscape indices responds dissimilarly to the changes of grains(.2)Spatial variation of landscape diversity shows the most complexity at the smallest extent(.3)The response of landscape indices and SHDI semi-variance to scale is respective. So landscape spatial pattern has scale dependency.
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