Factor

Criteria

Unit

Standard scores for the corresponding class

Highly suitable

(5 scores)

Suitable

(4 scores)

Moderately suitable

(3 scores)

Unsuitable

(2 scores)

Highly unsuitable

(1 score)

Topography

Slope

Degree

<3

3 - 6

6 - 9

9 - 12

>12

Elevation

Meter

<1000

1000 - 1500

1500 - 2000

2000 - 3500

>3500

Soil

Soil humus

(%)

>4

3 - 3.9

2 - 2.9

1 - 1.9

<0.9

Depth soil humus

(cm)

>20.1

15.1 - 20

10.1 - 15

5.1 - 10

<5

Soil texture

-

Light clay

(21 - 30),

Sandy

(10 - 20)

Mid-siltstone (31 - 45)

Sand (<10)

Heavy clay (45 - 60)

Clay (>60)

pH

-

6.5 - 7.0

7.1 - 7.5

6.1 - 6.5

7.6 - 8

5.6 - 6.0

8.5 - 9

5.1 - 5.5

>9

<5

Soil stone

%

<5.0

6 - 20

21 - 35

36 - 50

>50

Estimated soil organic C

-

>0.50

0.35 - 0.50

0.25 - 0.35

0.15 - 0.25

<0.15

Vegetation

Estimated AGB

%

>75

55 - 75

30 - 55

10 - 30

<10

NDVI

-

>0.50

0.35 - 0.50

0.25 - 0.35

0.15 - 0.25

<0.15

LAI (MODIS)

m² plant/ m² ground

>60

40 - 60

20 - 40

10 - 20

<10

GPP (MODIS)

kg C/m²

>0.035

0.02 - 0.035

0.01 - 0.02

0 - 0.01

3.0 - 3.27

Climate

Mean temperature summer season

(˚C)

19 - 22

15 - 19

>22

13 - 15

<13

Sum of rainfall summer season

(mm)

>200.1

150.1 - 200

100.1 - 150

50.1 - 100

<50

Estimated Hydro-Thermal coefficient

-

1.5 - 2.0

1.0 - 1.5

0.5 - 1.0

>2.0

<0.5

Hydrology

River density

km/km²

>0.4

0.2 - 0.4

0.1 - 0.2

0.05 - 0.1

<0.05

Permafrost distribution

-

Region of seasonal freezing

Sporadic & Prelatic

Island

Dis-continuous

Continuous

Water index

-

>0.50

0.35 - 0.50

0.25 - 0.35

0.15 - 0.25

<0.15

Socio-economic

Distance from settlement area

km

<100

100 - 200

200 - 400

400 - 800

>800

Distance from infrastructure

km

<50

50 - 100

100 - 300

300 - 500

>500

Distance from surface water resources

km

<3

3 - 6

6 - 12

12 - 15

>15