Table 1 Village distribution and economic development of the Upper Min River.

From: Respective influence of vertical mountain differentiation on debris flow occurrence in the Upper Min River, China

County

Land area/km2

Per capita GDP/Yuan

Net income per capita/Yuan

Township

Adminstrative villages

Farmer’s number

The density of adminstrative villages/km2

Total population

Songpan

7705

5780

1425

25

142

11,640

0.018

74,945

Heishui

3945

2656

1029

17

124

10,950

0.031

60,854

Mao

3655

3748

1222

23

152

19,219

0.042

111,452

Li

3817

6016

1112

13

81

8176

0.021

43,375

Wenchuan

3912

11262

1679

14

126

16,515

0.032

93,553

The upper Min River

23,034

5892

1293

92

625

66,500

0.027

384,179