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Table 1 Mean, standard deviation (SD) and range of measured variables describing soil chemical and physical variables, forest structure, and variables estimated by the Tea Bag Index

From: Decomposition and stabilization of organic matter in an old-growth tropical riparian forest: effects of soil properties and vegetation structure

Variables

Mean

SD

Range

Soil chemical properties (n = 10)

 pH (CaCl2)

5.71

0.543

5.00–6.70

 N (mg·kg− 1)

3627

1413

1974–6538

 P (mg·dm− 3)

18.9

8.12

11.0–34.0

 K (mmolc·dm− 3)

3.84

0.714

3.2–5.1

 N:P

198.0

44.27

123.4–247.5

 C:N

9.47

1.184

7.06–11.72

 OM (g·dm−3)

59.6

26.09

34.0–113.0

 CEC (mmolc·dm3)

133.0

61.83

67.2–224.7

 BS (%)

82.1

11.45

64.0–95.1

Soil physical properties (n = 10)

 Soil moisture (%)

18.5

8.49

5.6–30.9

 Clay content (%)

9.4

5.20

3.0–18.4

Forest structure (n = 10)

 Basal area (m2·ha−1)

46.2

21.88

19.1–97.0

 Mean DBH (cm)

8.15

1.161

6.30–9.85

 Forest stratification – CV DBH

1.006

0.197

0.846–1.442

 Tree density (ind·ha−1)

4200

666.7

3200–5100

Tea Bag Index (n = 43)

 Decomposition rate (k, g·g−1·day− 1)

0.028

0.017

0.009–0.098

 Stabilization factor (S)

0.350

0.051

0.211–0.426