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Table 6 Greenhouse gas flux rates in the enclosure age classes in Chepareria, Kenya

From: Pasture enclosures increase soil carbon dioxide flux rate in Semiarid Rangeland, Kenya

Enclosure system

Age class (years since establishment)

CO2, mg C m−2 h−1

CH4, μg C m−2 h−1

N2O, μg N m−2 h−1

GDE

3–10

186.0 ± 22.8

34.9 ± 8.2

32.4 ± 18.9

 

11–20

226.3 ± 21.7

63.1 ± 16.3

9.5 ± 2.4

 

> 20

260.9 ± 31.1

55.6 ± 17.9

18.95 ± 6.6

CGE

3–10

232.4 ± 26.2

60.8 ± 12.9

17.5 ± 5.9

 

11–20

242.7 ± 31.2

53.3 ± 14.6

26.2 ± 6.9

 

> 20

244.6 ± 25.6

58.0 ± 21.1

17.8 ± 7.4

LSD0.05

 

74.60

43.91

26.59

P-value

 

0.50

0.52

0.25

  1. Values are means ± SE (n = 3). Different lowercase letters indicate significant differences among grazing systems (P < 0.05)
  2. GDE grazing dominated enclosure, CGE contractual grazing enclosure