都市土地的混合使用，.是一種準碎形現象。是故，本研究將碎形理論加以擴展，以適合準碎形結構，並應用做為都市空間混合度的衡量指標，同時可以顯示不同尺度下的都市空間結構的變化。除了理論方法的推導外，本文並以高雄市內惟埤地區，進行實例研究。

Since the pattern of urban land use has the property of semi-fractal structure, this paper employs the semi-fractal dimension as an indicator to measure the spatial complexity. Furthermore, this method is able to reveal the change of urban structures among different scales. In addition to the derivation of theoretical work, a case study in the Kaohsinug area also show the high potentiality of this method.