1 Subjects: “...friction characteristics...”

2 Subjects: “...characteristics...”

3 Subjects: “...structural characteristics...”

4 Subjects: “...soil characteristics...”

5 Subjects: “...physico-chemical characteristics...”

6 Subjects: “...plant characteristics...”

7 Subjects: “...physical characteristics...”

8 Subjects: “...habitat characteristic...”

9 Subjects: “...fractal characteristics...”

10 Subjects: “...electrical characteristics...”

11 Subjects: “...spatiotemporal characteristics...”

12 Subjects: “...soil chemical characteristics...”

13 Subjects: “...pollution characteristics...”

14 Subjects: “...characteristic points...”