Analysis of Ecological Environment Evaluation and Coupled and Coordinated Development of Smart Cities Based on Multisource Data

Figure 4

Correlation and influence of principal components in ecological environment evaluation system of smart cities in Guangzhou.

(a) Correlation analysis between environmental excellence () and environmental restoration response ()

(b) Correlation analysis between environmental excellence () and environmental pollution pressure ()

(c) Correlation analysis between environmental restoration response () and environmental pollution pressure ()