Architectural colour planning strategy and planning implementation evaluation of historical and cultural cities based on different urban zones in Xuzhou (China)

Abstract

This research examined the colour planning of the city of Xuzhou in Jiangsu Province, China to empirically study the colour planning of historical and cultural cities. Based on considerable investigations, we identified Xuzhou's main hue, which spans from yellowish grayish‐white to yellowish‐gray (XZ11 ~ XZ29). Moreover, we formulated special colour planning schemes according to the attributes of different urban zones. To verify a plan's implementation impact, we used the analytical hierarchy process to construct an evaluation index system for the execution of urban colour planning. The system includes five secondary and 14 tertiary indicators. We employed the Delphi method to evaluate the established index system and to ascertain the weight of each index. Fuzzy comprehensive evaluation method was also used. We assessed the implementation of Xuzhou's main colours in six zones. The results suggest that the impact of colour planning is quite different in various urban zones, and that the colour planning influence of historical blocks is better than that of other urban zones. However, the coordination between colour planning in some areas is not adequate. Based on the above analysis, we evaluate specific problems in the implementation effect of Xuzhou's urban colour planning, as reflected in the secondary evaluation index results, and discuss measures of urban colour harmony planning and design in Xuzhou. We propose a comprehensive planning strategy that can be combined with different scales of urban colour landscapes in the future, which could provide a new optimization direction for Xuzhou's urban colour planning.

Color Authenticity for the Sustainable Development of Historical Areas: A Case Study of Shiquan

“…Colors, as an important element of historical areas, are an important manifestation of their authenticity [12]. The architectural colors of historical areas often retain their original color features, such as old red brick walls, time-honored blue flagstone (Qingshiban) pavement, and unique local cultural colors [13]. These color features are an important reflection of the color authenticity of historical areas and are also an important component of their historical and cultural value [14].…”

Conceptualizing the chromatic experience of environment: Two case studies using the Color Walk method

“…Environmental color design is even more difficult, because it not only includes the concepts of architectural color design but also the concepts of environment. In environmental color design related to urban planning and urban design, the results are color plans of a city or an area, [1][2][3][4][5][6] color strategies and color principles for historic cities, [7][8][9][10][11] and color-planning methods, means and tools of environmental color design. [12][13][14][15][16][17] Color plans have been drawn up for various cities, such as Barcelona, 18 Budapest, 19 Moscow, 20 Norwich, 8 Potsdam, 21 and Turin.…”

Building Façade Color Distribution, Color Harmony and Diversity in Relation to Street Functions: Using Street View Images and Deep Learning

“…Nowadays, measuring the criteria of color objectively and quantitatively is becoming more important in urban color planning [3]. Color planning comprises many parts; in the urban color landscape, it usually includes the colors of the natural landscape, building façades, roofs, advertising signs, public facilities, transportation tools and pavements [4]. The building façade accounts for the largest visible proportion of the building and can significantly impact the building's overall color appearance [5].…”

“…People's experience of the urban environment is shaped by its physical colors [6]. Color changes the citizens' understanding of the urban space and can change the emotional attachment between the citizens and the city [4]. Color can also enhance the continuity of the street and highlights the outline of the street.…”