Attribution of Multidimensional Urban Form to Thermal Environment and MAUP Effect
The study of the factors affecting the heat island effect was significantly influenced by the effect of the modifiable areal unit problem(MAUP),which led to uncertainty in the results.Taking the main urban area of Wuhan City as an example,we constructed a multidimensional urban spatial morphology index system based on multi-source spatial data of urban land use and buildings,explored the response characteristics of geographic detectors to the modifiable areal unit problem(MAUP)effect,analyzed the driving forces and factors of the spatial differentiation of urban thermal environment,proposed optimal regulation strategies to mitigate urban surface thermal environment.The results show that MAUP has strong sensitivity to the detection results of urban heat island effect factors,and different research units and partitioning methods will affect the research results.Factor detection analysis shows that the explanatory power of 3D spatial morphological indicators on urban heat island effect is greater than that of 2D urban land use indicators,and building density is the dominant driver of spatial differentiation of surface thermal environment.The interaction detection analysis shows that the spatial differentiation of the surface thermal environment in the main urban area of Wuhan is a synergistic process between different influencing factors,and the interaction between two-dimensional indicators and between two-dimensional and three-dimensional indicators is significantly greater than the single-factor effect.The study of the spatial differentiation of urban spatial morphology on the surface thermal environment provides theoretical support for the coordinated optimization of multi-dimensional urban spatial morphology to mitigate the heat island effect.
urban heat island effect2D/3D urban morphologyMAUP effectgeo-detectormain urban area of Wuhan
万方数据
维普
