The Soc. Sci., 14 (10): 356-360, 2019

358

542950 543000 543050 543100

542950 543000 543050 543100

1746

000

1

7460

50

1746

100

1

7461

50

1 746

000

1

7460

50

1746

100

1

7461

50

Unmanned aerial vehicle map area Sam Phan Bok, Ubon

Ratchathani province

Legend

Sample points

Sample grid size 10×10 m

N

W E

S

Projection ……….. UTM Zone 48N Datum ……..WGS 1984

0 20 40 80

m

(a) (b)

(a) (b)

A

B

A

C

A

B

C

C