[Soil N2O and CH4 fluxes in broad-leaved Korean pine forest of Changbai Mountains].
The soil N2O and CH4 fluxes in the broad-leaved Korean pine forest of Changbai Mountains under two treatments were measured by static chamber-gas chromatograph. The results showed that litter significantly influenced N2O emission and CH4 uptake, and the effect efficiency was 36.9% and 23.4%, respectively. The N2O emission fluxes of the two treatments showed similar seasonal variations, with the highest in spring, higher in summer, and lower in autumn and winter. Furthermore, their diurnal variations were the same, the maxima both occurred at 18 o'clock, and the minima appeared at 12 o'clock and 14 o'clock. As for CH4 uptake fluxes, their seasonal variations were similar. The CH4 uptake fluxes were significantly higher in summer and autumn than in spring and autumn, and their diurnal variations were also the same, both went up from 14 o'clock to 18 o'clock and then started to go down until 6 o'clock. The results also indicated that soil N2O emission fluxes were negatively linear-correlated to CH4 uptake fluxes in the broad-leaved Korean pine forest.
Xiao
Dongmei
D
Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang.
Wang
Miao
M
Ji
Lanzhu
L
Han
Shijie
S
Wang
Yuesi
Y
D002681:China; D017753:Ecosystem; D008697:Methane / Q000032:analysis* / Q000378:metabolism; D009609:Nitrous Oxide / Q000032:analysis* / Q000378:metabolism; D028223:Pinus / Q000254:growth & development / Q000378:metabolism*; D012621:Seasons; D012987:Soil / Q000032:analysis*
D012987:Soil; D009609:Nitrous Oxide; D008697:Methane