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Table 4 Descriptive statistics of data of organic horizons and mineral soil layers at study sites

From: Effects of Quercus rubra L. on soil properties and humus forms in 50-year-old and 80-year-old forest stands of Lombardy plain

 

Valid N

Mean

Min

Max

Std.Dev.

Std.Err.

Var. Coeff

BV (Bosco Vacaressino)

ROF (red oak forest)

SOC1 (%)

20

4.56

2.77

7.62

1.44

0.32

31.52

SOC2 (%)

20

2.67

1.24

3.97

0.87

0.19

32.59

SOC3 (%)

20

1.18

0.41

3.46

0.77

0.17

65.75

CN1

20

15.9

10.1

18.1

1.7

0.4

10.9

CN2

20

16.3

13.9

20.8

1.6

0.4

10.1

CN3

20

14.8

13.0

17.8

1.5

0.3

10.1

pHw1

20

4.2

3.8

4.6

0.2

0.0

4.7

pHw2

20

4.6

4.3

4.8

0.2

0.0

3.5

pHw3

20

4.8

4.4

5.5

0.3

0.1

5.5

BD1 (g cm−3)

20

0.86

0.56

1.13

0.16

0.04

19.06

BD2 (g cm−3)

20

1.10

0.74

1.70

0.25

0.06

22.85

SOCOL (kg m−2)

20

0.63

0.26

0.91

0.22

0.05

34.19

SOCOF (kg m−2)

14

0.30

0.07

0.84

0.21

0.06

70.46

SOCOH (kg m−2)

5

0.21

0.06

0.34

0.11

0.05

53.62

SOCO (kg m−2)

20

0.89

0.33

1.64

0.34

0.08

37.69

SOCstock (kg m−2)

20

11.13

5.97

16.34

2.85

0.64

25.65

Pav (mg kg−1)

20

11.65

3.50

30.50

5.67

1.27

48.62

Rock fragm1 (%)

20

8

1

19

5

1

64

Rock fragm2 (%)

20

9

1

32

7

1

73

Sand2 (g kg−1)

20

626

518

692

40

9

6

Silt2 (g kg−1)

20

273

222

355

31

7

11

Clay2 (g kg−1)

20

101

64

127

16

4

16

Sand3 (g kg−1)

12

683

575

780

72

21

11

Silt3 (g kg−1)

12

251

158

366

71

21

28

Clay3 (g kg−1)

12

66.0

55

80

8

2

13

MF (mixed forest)

SOC1 (%)

20

6.58

3.11

12.03

2.79

0.62

42.43

SOC2 (%)

20

3.10

1.67

5.17

0.96

0.21

31.03

SOC3 (%)

20

1.17

0.50

2.09

0.80

0.18

40.92

CN1

20

13.4

10.6

18.7

1.9

0.4

14.2

CN2

20

12.7

7.1

22.7

3.2

0.7

25.1

CN3

12

13.0

11.3

14.5

1.1

0.3

8.4

pHw1

20

5.2

4.1

6.7

0.8

0.2

14.7

pHw2

20

5.3

4.2

6.5

0.7

0.2

13.1

pHw3

12

5.9

4.7

6.6

0.7

0.2

12.5

BD1 (g cm−3)

20

0.71

0.49

0.98

0.14

0.03

19.21

BD2 (g cm−3)

20

1.16

0.88

1.50

0.18

0.04

15.38

SOCOL (kg m−2)

20

0.50

0.19

0.78

0.18

0.04

35.47

SOCOF (kg m−2)

9

0.23

0.14

0.45

0.10

0.03

45.07

SOCOH (kg m−2)

-

-

-

-

-

-

-

SOCO (kg m−2)

20

0.61

0.19

1.06

0.23

0.05

37.79

SOCstock (kg m−2)

20

11.88

6.93

19.55

3.07

0.69

25.84

Pav (mg kg−1)

20

10.82

5.30

21.57

4.94

1.10

45.63

Rock fragm1 (%)

20

16

1

31

8

2

52

Rock fragm2 (%)

20

20

5

25

7

2

35

Sand2 (g kg−1)

20

637

566

681

32

7

5

Silt2 (g kg−1)

20

276

223

312

25

6

9

Clay2 (g kg−1)

20

87

59

122

18

4

21

Sand3 (g kg−1)

12

713

589

852

98

28

14

Silt3 (g kg−1)

12

241

100

354

96

28

40

Clay3 (g kg−1)

12

46

39

57

6

2

13

BG (Bosco Ginestre)

ROF (red oak forest)

SOC1 (%)

29

5.50

2.82

10.15

1.93

0.36

35.15

 

SOC2 (%)

29

2.13

1.55

3.42

0.39

0.07

18.54

 

SOC3 (%)

15

1.33

0.80

1.92

0.34

0.09

25.22

 

CN1

29

16.4

12.8

19.2

1.7

0.3

10.1

 

CN2

29

16.1

9.2

18.5

1.6

0.3

9.9

 

CN3

15

15.8

10.6

20.0

2.4

0.6

15.4

 

pHw1

29

4.1

3.5

4.5

0.2

0.0

5.3

 

pHw2

29

4.5

4.3

5.1

0.1

0.0

3.2

 

pHw3

15

4.60

4.50

4.70

0.07

0.02

1.45

 

BD1 (g cm−3)

29

0.84

0.15

1.42

0.27

0.05

31.86

 

BD2 (g cm−3)

29

1.17

0.55

1.52

0.22

0.04

19.16

 

SOCOL (kg m−2)

29

0.58

0.22

1.33

0.25

0.05

42.86

 

SOCOF (kg m−2)

29

0.14

0.01

0.37

0.08

0.01

55.90

 

SOCOH (kg m−2)

25

1.28

0.42

4.53

1.05

0.21

82.53

 

SOCO (kg m−2)

29

1.83

0.33

5.64

1.19

0.22

65.33

 

SOCstock (kg m−2)

29

12.04

9.80

15.67

1.57

0.29

12.47

 

Pav (mg kg−1)

29

16.61

5.86

28.02

5.82

1.08

35.06

 

Rock fragm1 (%)

29

2

0

11

2

0

128

 

Rock fragm2 (%)

29

2

0

11

2

0

114

 

Sand2 (g kg−1)

29

689

561

767

54

10

8

 

Silt2 (g kg−1)

29

248

172

382

50

9

20

 

Clay2 (g kg−1)

29

64

19

98

23

4

36

 

Sand3 (g kg−1)

15

728

575

841

89

23

12

 

Silt3 (g kg−1)

15

220

119

344

78

20

35

 

Clay3 (g kg−1)

15

52

35

81

14

4

27

MF (mixed forest)

SOC1 (%)

20

4.85

2.11

7.54

1.58

0.35

32.52

 

SOC2 (%)

20

1.54

0.99

2.08

0.34

0.08

22.03

 

SOC3 (%)

10

0.94

0.52

1.29

0.27

0.08

28.35

 

CN1

20

15.7

14.3

18.0

0.9

0.2

5.7

 

CN2

20

15.7

13.7

17.7

0.8

0.2

5.4

 

CN3

10

16.0

14.0

18.7

1.4

0.5

9.0

 

pHw1

20

4.4

4.2

4.8

0.2

0.0

4.1

 

pHw2

20

4.5

4.3

4.9

0.1

0.0

3.1

 

pHw3

10

4.6

4.4

4.7

0.1

0.0

2.5

 

BD1 (g cm−3)

20

0.83

0.44

1.20

0.19

0.04

22.44

 

BD2 (g cm−3)

20

1.17

0.95

1.40

0.12

0.03

9.89

 

SOCOL (kg m−2)

20

0.38

0.14

0.71

0.18

0.04

47.28

 

SOCOF (kg m−2)

19

0.06

0.01

0.19

0.05

0.01

79.85

 

SOCOH (kg m−2)

4

0.39

0.12

0.72

0.26

0.13

65.71

 

SOCO (kg m−2)

20

0.52

0.16

1.14

0.26

0.06

51.28

 

SOCstock (kg m−2)

20

8.31

4.6

12.71

2.83

0.63

30.10

 

Pav (mg kg−1)

20

14.07

4.71

22.07

5.48

1.22

38.92

 

Rock fragm1 (%)

20

-

-

-

-

-

-

 

Rock fragm2 (%)

20

-

-

-

-

-

-

 

Sand2 (g kg−1)

20

684

537

821

73

16

11

 

Silt2 (g kg−1)

20

242

128

342

61

14

25

 

Clay2 (g kg−1)

20

74

43

122

24

5

33

 

Sand3 (g kg−1)

10

715

652

756

38

12

5

 

Silt3 (g kg−1)

10

219

185

267

29

9

13

 

Clay3 (g kg−1)

10

65

49

81

12

4

18

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Annals of Forest Science

ISSN: 1297-966X