中国广东省城市生态韧性的时空格局演变与动态模拟
Spatio-temporal pattern evolution and dynamic simulation of urban ecological resilience in Guangdong Province, China.
作者信息
Liao Zhenjie, Zhang Lijuan
机构信息
School of Management, Guangzhou Huashang College, Guangzhou, China.
出版信息
Heliyon. 2024 Jan 26;10(3):e25127. doi: 10.1016/j.heliyon.2024.e25127. eCollection 2024 Feb 15.
Currently, in-depth analyses concerning the dynamic simulation of urban resilience and forecasting future development trends are lacking. To address urban vulnerability and promote regional balance and sustainable development, this study assessed the urban ecological resilience of Guangdong Province from 2000 to 2020 using the entropy weight TOPSIS method. Furthermore, we examined the spatial and temporal variations and evolution of urban ecological resilience through measures such as kernel density estimation, Theil index, and the center of gravity standard deviation ellipse. We employ obstacle degree and back-propagation (BP) neural network models to identify the primary barriers and conduct dynamic simulations. Our findings revealed that, from an evolutionary resilience perspective, urban ecological resilience is an inherent characteristic of urban ecosystems. It consistently possesses the dynamic ability to defend against disturbances, respond promptly when interference occurs, and continually learn and innovate, regardless of the urban ecology's state of disturbance. Urban ecological resilience in Guangdong Province has steadily improved with minimal fluctuations, establishing a trend characterized by low concentration and high convergence. Regarding barrier factors, the disposal rate of domestic waste, number of college students per 10,000 people, number of R&D personnel per 10,000 labor force, and per capita park green space area are the primary constraints on urban ecological resilience in Guangdong Province. Dynamic simulations from 2022 to 2030 suggest that urban resilience will experience gradual development with a decreasing overall resilience level. Areas with lower and median resilience values will predominate, while the number of cities with higher resilience levels will see a reduction. Future development trends indicate notable temporal and spatial variations. In the east and west directions, the urban resilience level forms a "U" shape, while in the north and south directions, it is higher in the south and lower in the north.
目前,缺乏关于城市韧性动态模拟及预测未来发展趋势的深入分析。为应对城市脆弱性并促进区域平衡与可持续发展,本研究采用熵权TOPSIS法评估了2000年至2020年广东省的城市生态韧性。此外,我们通过核密度估计、泰尔指数和重心标准差椭圆等方法研究了城市生态韧性的时空变化与演变。我们运用障碍度和反向传播(BP)神经网络模型来识别主要障碍并进行动态模拟。我们的研究结果表明,从进化韧性的角度来看,城市生态韧性是城市生态系统的固有特征。无论城市生态的受干扰状态如何,它始终具备抵御干扰、在干扰发生时迅速响应以及持续学习和创新的动态能力。广东省的城市生态韧性稳步提升,波动极小,呈现出低集聚、高收敛的趋势。关于障碍因素,生活垃圾处理率、每万人大学生数、每万劳动力研发人员数和人均公园绿地面积是广东省城市生态韧性的主要制约因素。2022年至2030年的动态模拟表明,城市韧性将逐渐发展,但整体韧性水平会下降。韧性值较低和中等的区域将占主导,而韧性水平较高的城市数量将减少。未来发展趋势显示出显著的时空变化。在东西方向上,城市韧性水平呈“U”形,而在南北方向上,南部较高,北部较低。