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.

The newly issued “Guideline of General Planning of Wetland Parks”, China, reclassified the functional zoning of national wetland parks into three categories: conservation areas, restoration and reconstruction areas, and rational utilization areas. Therefore, the country is facing a new round of revision and compilation of the general planning of national wetland parks. The purpose of this paper was to provide information to guide wetland park functional zoning and to formulate the water pollution prevention and control strategy. In this study, 53 sampling points of 6 national wetland parks in Suzhou City were selected. Pearson’s correlation analysis, multiple stepwise regression analysis, redundancy analysis, single factor, and comprehensive water quality identification index methods were used to analyze the effects of wetland landscape types and landscape configuration on water quality. (1) Lakes and rivers in the wetland park had positive ecological effects and should be distributed in each functional zone. (2) Grassland ecology is fragile. Grasslands should be distributed in conservation areas and in restoration and reconstruction areas. (3) Woodland and cultivated land have both ecological and economic benefits. They can be used as ecological buffer and entertainment zones, which are respectively distributed in the restoration and reconstruction areas and in the reasonable utilization areas. (4) Built-up land is highly disturbed by humans. It should only occur in the rational utilization areas and far away from the conservation areas.

Scientific analysis of the spatial evolution of existing industrial areas in cities and prediction of future development needs will help to rationally allocate land resources in existing industrial areas in urban renewal, scientifically and rationally develop underground space, and promote the sustainable development of existing industrial areas. First of all, the development mode and leading function type of the existing industrial zone in the city are sorted out, and its corresponding underground space development function is further sorted out. It is found that the underground space development of the existing industrial zones in the city is closely related to the dominant functions and location of the ground renewal. To scientifically guide the development of underground space in existing industrial areas in cities, this study proposes a method based on the dynamics model and the CA-Markov model to predict the functions of underground space development in existing industrial areas in cities, which will improve the efficiency and Benefits to promote the rational allocation of land resources is of great significance.

With the arrival of the era of stock optimization, urban existing industrial areas and industrial buildings through renovation and upgrading to improve the building performance and expand the building function, more and more become an important content of urban renewal. With rich industrial building heritages in Shanghai as an example, the study was based on the ground of the industrial heritage protection status and function of underground space utilization, exploring the development and utilization of underground space to realize city both with industrial zone industrial building heritages protection development, expansion of land space and function optimization, summarized based on the industrial building heritages protection of underground space utilization patterns and their characteristics. It can provide a reference for the existing urban environmental stock renewal and expansion.

There are many problems in the practical use of tactile ground surface indicators (TGSIs), and the large amount of TGSI construction currently being carried out does not always have a beneficial impact on the travel of visually impaired groups. Taking the roadside pedestrian space in the Gulou District of Nanjing City as an example, this paper established a TGSI quality evaluation system including six first-level indicators and 24 second-level indicators. The analytic hierarchy process (AHP) was used to determine the weight of the indicators at all levels, and evaluate six urban main roads, six urban secondary main roads and six sidewalks beside access roads, which were selected randomly. Visually impaired people were then asked to evaluate the TGSIs in the pedestrian spaces along these roads. Statistical analysis and evaluation showed that the indicators used in the evaluation system were satisfactory. The evaluation results revealed problems with the standardization, safety, accessibility, continuity, comfort and aesthetics of TGSIs in the urban roadside pedestrian space of Gulou. Analysis of the combined data showed that travel conditions for the visually impaired are currently worse in the old city area than in the new city area and that they are worse in low-grade pedestrian space than along high-grade roads. In order to solve these problems, strategies are put forward for improving the quality of TGSIs in the pedestrian space of Nanjing’s Gulou District in four aspects: improving TGSI structure, optimizing TGSI location, improving the TGSI system, and adapting TGSI implementation according to local conditions.