Zhao Chunhong, Zhang Huabo, Wang Haiying, Zhao Jinyi
The College of Geography and Environment Science, Henan University, Kaifeng, 475004, China.
Key Laboratory of Geospatial Technology for Middle and Lower Yellow River Regions, Ministry of Education, Kaifeng, 475004, China.
Heliyon. 2023 Aug 1;9(8):e18849. doi: 10.1016/j.heliyon.2023.e18849. eCollection 2023 Aug.
The change of the impervious surface area (ISA) is an important feature of urban spatial expansion. Understanding the spatial and temporal change characteristics of urban impervious surfaces and their influencing factors is of great significance to the planning, management, and urbanization development of cities. This paper adopts a global artificial impervious surface dataset, with a resolution of 30 m, calculates and processes the data based on the ArcGIS platform, adopts the MK trend test method, introduces the dynamic degree, qualitatively and quantitatively analyses the changing characteristics of the ISA in the Central Plains Urban Agglomeration (CPUA), and analyzes the influencing factors of ISA changes using GeoDetector. The results show that the ISA dynamic degree was significantly enhanced from 2000 to 2018, which increased 1.86 times, indicating the accelerated outward expansion of the CPUA and the rapid level of urban development during that period. The explanatory power of the greenery coverage area on the change of the ISA in the CPUA during 2000-2018 was the strongest; the same factor has different explanatory powers for the ISA in different periods. The influencing factors have an enhanced relationship between two and two, including two-factor enhancement and nonlinear enhancement, in 2000-2009, during which the interaction level of the greenery coverage area and the GDP per capita was strong, while from 2009 to 2018, the interaction between transportation and other factors was significantly strong.
不透水表面面积（ISA）的变化是城市空间扩张的一个重要特征。了解城市不透水表面的时空变化特征及其影响因素，对城市的规划、管理和城市化发展具有重要意义。本文采用分辨率为30米的全球人工不透水表面数据集，基于ArcGIS平台进行数据计算与处理，采用MK趋势检验方法，引入动态度，对中原城市群（CPUA）的ISA变化特征进行定性和定量分析，并利用地理探测器分析ISA变化的影响因素。结果表明，2000年至2018年ISA动态度显著增强，增长了1.86倍，表明该时期CPUA向外扩张加速，城市发展迅速。2000 - 2018年期间，绿化覆盖面积对CPUA中ISA变化的解释力最强；同一因素在不同时期对ISA具有不同的解释力。2000 - 2009年期间，影响因素两两之间存在增强关系，包括双因素增强和非线性增强，其中绿化覆盖面积与人均GDP的交互作用较强，而2009 - 2018年期间，交通与其他因素之间的交互作用显著增强。
