从平坦均匀到非均匀粗糙元，对数廓线的唯一性以及对复合地表或复杂城市地形的适用性，仍需要进一步的理论探讨。基于复杂地形下不同高度段发育不同廓线并反映不同地形尺度的假设，以广州主建成区为例，设计空间尺度与形态概括逐渐变化的模型序列，基于风洞模拟并结合雷达的野外验证，分析广州城市立体形态下不同高度段对数廓线沿风程的演变以及对风程形状的依赖，从整体的角度探讨不同空间尺度对不同高度段廓线的制约，完善对数廓线发育机理，为形态学模型廓线参数的实际应用提供理论支撑。

From homogeneous to heterogeneous terrain, the uniqueness of logarithmic profiles and its applicability to composite surface or complex urban terrain still needs further theoretical discussion. Based on the hypothesis that different height can form different logarithmic profiles in complex terrain and reflect different size terrain, this paper takes Guangzhou’s main built-up area as an example. The models of two diverse spatial scales are designed, which has fixed region, scale and range extension of Zhujiang New Town. Wind tunnel simulation technology and radar are utilized in the study, via the evolution of logarithmic profiles along the wind fetch and its reliance on shape of the wind fetch, the impact of different spatial scales on profiles in diverse height based on Guangzhou’ three-dimensional urban form is discussed from macro perspectives, which will improve formation mechanism of logarithmic profiles and provide theoretical support for the practical application in morphological model’s profiles parameters.