Table 2 Vegetation layer organs, mean C and N concentrations, and C:N ratios of four stand ages.

From: The chemical stoichiometry characteristics of plant-soil carbon and nitrogen in subtropical Pinus massoniana natural forests

Variable

Organ

C (g kg−1)

N (g kg−1)

C:N

Tree layer

Leaf

492.00

10.36

48.27

Branch

462.01

3.08

210.55

Trunk

475.60

1.10

467.83

Root

442.54

3.18

276.16

Understory vegetation layer

BL

401.96

14.33

28.91

BB

396.12

6.29

65.06

BR

367.82

6.69

59.06

HAP

464.47

11.73

40.92

HUP

339.91

6.22

57.23

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