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Table 7 Physical and chemical degradation classes according to the natural factors

From: Assessment of land degradation and implications on agricultural land in Qalyubia Governorate, Egypt

Profile No.

Mapping unit

Physical degradation

Chemical degradation

C

S

T

Value

Class

C

S

T

Value

Class

1

I1

1.0

1.90

1

0.22

High

0.21

0.3

1

0.07

Slight

2

I2

1.0

1.88

1

0.21

High

0.21

0.3

1

0.07

Slight

3

SI1

1.0

1.83

1

0.21

High

0.21

0.2

1

0.06

Slight

4

SI2

1.0

1.81

1

0.21

High

0.21

0.2

1

0.06

Slight

5

L1

1.0

1.80

1

0.20

Mod.

0.21

0.1

1

0.05

Slight

6

L2

1.0

1.75

1

0.20

Mod.

0.21

0.1

1

0.05

Slight

7

O.M1

1.0

0.91

1

0.10

Mod.

0.21

0.6

1

0.10

Mod.

8

O.M2

1.0

0.90

1

0.10

Mod.

0.21

0.5

1

0.10

Mod.

9

O.B1

1.0

0.69

1

0.07

Slight

0.21

1

1

0.21

High

10

O.B2

1.0

0.67

1

0.07

Slight

0.21

1

1

0.21

High

11

D.B1

1.0

0.58

1

0.05

Slight

0.21

1.2

1

0.22

High

12

D.B2

1.0

0.51

1

0.05

Slight

0.21

1.2

1

0.22

High

13

T.b

1.0

1.90

1

0.2

Mod

0.21

0.3

1

0.07

Slight

14

T1

1.0

1.45

1

0.14

Mod.

0.21

0.3

1

0.07

Slight

15

T2

1.0

1.12

1

0.11

Mod.

0.21

0.3

1

0.07

Slight

  1. Slight (< 0.1), moderate (0.1–0.2), High > (0.2); C climate, S soil, T topography