3. Evaluation index systems of blue-green spaces
In the process of rapid urban development, some problems such as the
destruction of ecological balance inevitably existed due to imbalanced
planning, thus eventually leading to urban sub-health of a city.
Therefore, the “symptoms” and “causes” of urban environmental
problems are often explored by constructing an evaluation index system,
in order to obtain suitable countermeasures for urban restoration and
subsequent ecological restoration. Therefore, the construction of cities
has experienced the following transformation stages: the initial stage
focusing on water bodies and green spaces for the purpose of providing
the material basis for human beings, the second stage of providing the
ecological functions of climate regulation, and the third stage focusing
on the cultural and support benefits. In more urban planning, economic
construction has shifted to people-centered construction and the
happiness and satisfaction of urban residents are increasingly
considered. The evaluation index system of blue-green spaces has also
developed (Table 3).