复杂地形区域通达度模拟和分析--以天山北坡经济带为例

his paper attempts to combine nodes, axes and area to elaborate accessibility in the Economic Belt of Northern Slop of Tianshan Mountains. Based on space syntax, daily accessibility and isochronous rings according to algorithm of feature points, the spatial pattern of accessibility of road network are evaluated synthetically in multi-angle. The result shows: (1) The spatial pattern of segment type stretches along the"point-axis"style while the spatial pattern of axis type stretches along the"trunk-branch"shape. Core ring, transition ring, and periphery ring of three grade level as well as double "+" shape of road network is preliminary formed. (2) Urban accessibility, to a great extent, depends on the regional geometric centre, the development level of the surrounding road network and intensive degree of urban or town. Although geographically location biased towards regional eastern, the control action of Urumqi City as a main central city to entire regional road network are apparent because surrounding road network and urban distribution are relatively concentrated. (3) Spatial distribution of regional accessibility is significantly different so that continuity of central plates are obvious and restricted of peripheral plates are apparent because of desert and mountain.