Under the background of urban renewal protection and old city transformation, problems such as clutter, distortion, and disorder appear in the historical style area. These problems have greatly impacted and damaged the cultural heritage and historical research of the style area. To carry out the urban renewal movement more reasonably, this article selects the historical features of the Old Town of Shanghai for empirical research, uses the colour patch concept and fragmentation index for a quantitative analysis, and divides the study area fragmentation level. The study found that the number and types of colour patches in the Old Town are many, and the yellow system is highly fragmented in the Old Town, which means that the human environment in the colour style area is lost. The main reasons are the rise of modernist architecture and new materials. Three aspects are involved in the widespread use of policy and out‐of‐control management of the policy; therefore, attention should be paid to the updating of future historical style areas: protecting the authenticity of colours, maintaining colour integrity, and continually retaining colour memories in cities.

中文翻译：

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历史区域中的颜色碎片测量：以上海老城区为例

在城市更新保护和旧城改造的背景下，历史风貌地区出现了混乱，扭曲，混乱等问题。这些问题极大地影响和破坏了风格地区的文化遗产和历史研究。为了更合理地进行城市更新运动，本文选择了上海老城区的历史特征进行实证研究，使用色块概念和破碎指数进行定量分析，并对研究区域的破碎程度进行划分。研究发现，旧城区中色标的数量和类型很多，而旧城区中的黄色系统非常分散，这意味着色彩风格区域的人文环境已经丧失。主要原因是现代主义建筑和新材料的兴起。策略的广泛使用和策略的失控管理涉及三个方面。因此，应注意更新未来的历史风格区域：保护颜色的真实性，保持颜色的完整性以及持续保留城市中的颜色记忆。