JWACA2025-010: Research Characteristics and Trends of Blue-Green Spaces in Mitigating Urban Heat Island Effect-Based on CiteSpace Knowledge Map Analysis

Abstract

With the acceleration of urbanization and the intensification of the urban heat island effect, blue-green spaces, as an important carrier of regulating microclimate and alleviating heat stress, have attracted great attention. However, existing studies still have problems such as insufficient multidisciplinary integration and lack of long-term dynamic monitoring. Based on the CNKI and Web of Science databases, this paper uses CiteSpace software to conduct a visual knowledge map analysis of the literature in the past ten years, and explores the relationship between blue-green spaces and the heat island effect by combining keyword co-occurrence, term clustering, and publication volume trends. The study found that blue-green spaces significantly alleviate the heat island effect through evapotranspiration, shading, and improved ventilation. The landscape pattern and scale of blue-green spaces have a significant impact on the heat regulation effect. The number of publications at home and abroad has increased exponentially, and domestic research activity is relatively high, but international growth is faster. The innovation of the study lies in the cross-database integration analysis, the systematic revelation of the mechanism of blue-green spaces, and the proposal of planning strategies to optimize spatial connectivity and layout. Its value lies in providing scientific basis for the improvement of urban heat environment, emphasizing the key role of blue-green spaces in improving livability, and promoting multidisciplinary collaborative research and the construction of long-term monitoring systems, which will help in sustainable urban planning practices.