1 Subjects: “...Population Economics...”

2 Subjects: “...vulnerable populations...”

3 Subjects: “...population...”

4 Subjects: “...population...”

5 Subjects: “...population density...”

6 Subjects: “...population exposure change...”

7 Subjects: “...population density...”

8 Subjects: “...land consumption rate to the population growth rate (LCRPGR)...”

9 Subjects: “...ageing population...”

10 Subjects: “...rural population...”

11 Subjects: “...population exposure to air pollutant...”

12 Subjects: “...population growth...”

13 Subjects: “...older population...”

14 Subjects: “...urban population agglomeration...”