关键词: 大都市区, 廊道效应, 城市景观结构

Abstract: This paper is concerned with two types of urban corridors, artifitial corridors and natural corridors. The concept of corridor effect is examined in a metropolitan landscape structure. The analysis is undertaken by using a distance decay curve which is based on an idea concerning the concept of "corridor benefit". The line of demarcation between artificial corridor and natural corridor is the synthetic benefit point from the thoery analysis. This study suggests that there are two synthetic benefit points on the curves of distance decay for the existence of a natural corridor between two artifitial corridors. In particular, it is necessary to avoid a high density of artificial corridors and to improve social and economic benefits in natural corridors. The spatial growth of 8 corricors is examined in the central area of Beijing. This inner city study attempts to replicate several findings of green area and water system as a framework aroud and through the center of the city combined with the east, the west, the south, the north and the eight directions of natural corridor effects in traditional chinese city planning. The ideas of human and nature in perfect harmony were used in the metropolitan landscape planning. The landscape structure of Beijing should change from a multiple form to a star shaped from in order to avoid the massive growth of the built up area.

Key words: metropolitan area, corridor effect, urban landscape structure