关键词: 趋势面分析, 地势, 云南

Abstract: The paper describes macrocharacteristie of surface relief with low order trend face in Yunnan as an example. The result of the first and second order trend surface analysis of absolute and local reliefs in Yunnan indicates that change tendenies of peak surface and dissected deep in a region are approximately a plane to SSE and are more similar to a hyperbolid inolined and protruded to SSE. The analysis provides an occurrence of the plane and type, azimuth and from of Symmetric axis Line, coordinate Values of sym-metric centre point of the hyperboloid. Thus the description is suitable.

Key words: surface relief in Yunnan, trend surface analysis