[Figure 9]
3.4 Driving mechanism of
terrestrial ecosystem health and urbanization
In this section, the relationship between UI, EHI and the other 9
variables were explored (Fig 10). It confirmed that EHI was positively
correlated with precipitation (pre), temperature (tmp) and slope (sp),
while UI was significantly and positively correlated with pop density
(PD), annual electricity consumption (EC), the proportion of
construction land area (PCL) and gross domestic product (GDP). Moreover,
strong correlations among the variables existed. For instance, the
correlation coefficients for pre and tmp, GDP and EC, DEM and sp, were
high, exceeding 0.6. However, significant negative correlations were
presented among some drivers, such as DEM and pre, DEM and tmp.
Additionally, UI and EHI were negatively correlated, with a value of
-0.1.