Indicators

Method

Reference

Unit

Specific value

Score

Land subsidence condition

Practical measurement

The official report of land subsidence in the area

cm*year^-1

0 - 1

8 - 10

1 - 10

5 - 7

>10

0 - 4

Percentage of land for green area

Estimation based on statistical data

National standard for public green area

m² per resident

12 - 15

8 - 10

8 - 12

4 - 7

4 - 8

2 - 3

0 - 4

0 - 1

Soil pollution

Practical measurement

National standard for residential soil quality, including heavy metal, chemicals, pesticides and insecticides

mg pollutants per kg of refined soil

All the regulated pollutants are traced or not found

7 - 10

Less than 3 pollutants are found at a higher level than the limits

4 - 6

More than 3 pollutants are found at higher level than the limits

0 - 3