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Table 9 Changes of the main land characteristics

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

Profile No.

Mapping unit

Depth of water table level (cm)

Bulk densitya

g/cm3

ECa ds/m

ESPa %

1967

2017

1967

2017

1967

2017

1967

2017

1

I1

100

65

1.10

1.12

2.62

4.31

8.7

10.1

2

I2

110

80

1.10

1.13

.3.24

4.00

9.0

11.3

3

SI1

100

70

1.13

1.14

3.00

4.21

8.4

10.2

4

SI2

100

80

1.15

1.16

3.72

5.10

8.1

9.6

5

L1

110

75

1.12

1.15

3.18

6.19

9.2

11.3

6

L2

100

65

1.14

1.15

4.00

6.18

9.1

11.2

7

O.M1

120

100

1.30

1.35

5.31

9.21

9.0

15.0

8

O.M2

130

100

1.27

1.31

6.00

10.41

10.6

15.8

9

O.B1

120

90

1.29

1.35

6.49

11.23

15.0

16.1

10

O.B2

120

100

1.26

1.29

7.24

10.17

15.9

19.8

11

D.B1

110

90

1.24

1.42

5.14

9.16

15.8

19.3

12

D.B2

120

70

1.30

1.46

6.25

9.00

15.4

17.9

13

T.B

150

125

1.16

1.17

3.90

6.91

14.5

15.3

14

T1

120

100

1.18

1.19

2.81

4.83

9.4

11.4

15

T2

110

95

1.15

1.18

3.19

5.20

7.8

10.1

  1. aCalculated till the depth to 100 cm