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Table 1 Basic characteristics of sample plots

From: Leaf litter chemistry and its effects on soil microorganisms in different ages of Zanthoxylum planispinum var. Dintanensis

Plantation age (years)

Tree height (m)

Density (plants/hm2)

Crown (m)

Canopy density

Annual amount of leaf litter (kg/plant)

5–7

3.0

1150

3 × 3

0.75

1

10–12

3.0

1150

3 × 3

0.75

1

20–22

3.5

1000

3.5 × 3.5

0.55

0.8

28–32

4.2

650

4 × 5

0.5

0.6