Fluxes of soil carbon dioxide，nitrous oxide and firedamp in broad-I eaVed／Korean pi n e forest |
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| 台 站：
长白山森林生态系统定位研究站
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| 作 者：XIAO Dong－mei，WANG Miao，WANG Yue－si，，JI Lan－zhu |
| 点 击 率：4853 |
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| 关 键 字：Flux；CO2,N2O and CH4：SeasonaI variation；DiurnaI variation |
| 摘 要：Abstract：To understand influence of Iitters on the emission／absorption of CO2，NaO and CH4 in broadleaved／Korean pine forest
in Changbai Mountain，fluxes of soil C02，N2O and CH4 were measured by closed static chamber technique，frOm Sept 3，2002
to Oct 30，2003 in two types of soiI ecosystems，of which one was covered with Iitters on the surface soil，and the other had no
litters．The results showed that liters had significant influences on CO2，N20 and CH4 fluxes(p<0．05)．Their diurnal change
paterns of plot with Iiters and Iiter-free plot were similar．and they alI showed emission／absorption peak at 1 8：00．The diurnaI
fluxes of C02 and N2O of plot with liters were significantly higher than those of the liter—free plot，while the diurnal flux of CH4 of
plot with Iitters was Iower than that of Iitter-free plot．The fluxes of CO2，N20，and CH4 showed the similar seasonaI paterns for
both plots．The fluxes of CO2，OH4 showed their peak fluxes in June．but the fluxes of N2O showed its peak emissions in August．
The annuaI fluxes of C02 and N2O of plot with Iiters were significantly higher than those of the Iiter-free plot．while the annuaIflux of CHd of plot with Iitters was Iower than that of Iiter—free plot． |
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