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Table 2 Total C, N content and C/N ratio in each particle-size fraction of soils collected from the O/A horizon at 3 topographic positions

From: Characterization of soil organic matter in perhumid natural cypress forest: comparison of humification in different particle-size fractions

Topographic position

Particle-size (μm)

TCa(%)

TNb(%)

C/N

Summit

Coarse (>250)

44.4

1.1

39.0

 

Medium (250 ~ 53)

43.8

1.5

29.5

 

Fine (53 ~ 2)

44.7

2.0

21.9

 

Very Fine (< 2)

46.9

2.4

19.6

Footslope

Coarse (>250)

41.9

1.9

22.0

 

Medium (250 ~ 53)

45.8

2.0

22.4

 

Fine (53 ~ 2)

38.4

1.8

21.8

 

Very Fine (< 2)

47.3

2.3

20.7

Lakeshore

Coarse (>250)

42.0

1.5

27.7

 

Medium (250 ~ 53)

47.0

1.7

28.1

 

Fine (53 ~ 2)

49.1

1.9

26.5

 

Very Fine (< 2)

47.5

1.8

26.5

  1. aTotal carbon.
  2. bTotal nitrogen.