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作 者 ：周存宇,张德强,王跃思,周国逸,刘世忠,唐旭利

期 刊 ：生态学报 2004年 24卷 8期 页码：1738~1741

关键词：鼎湖山；温室气体；通量；日变化；

Keywords:Dinghushan, greenhouse gas, flux, diurnal variation,

摘 要 ：利用静态箱 -气相色谱法对鼎湖山针阔叶混交林地表 3种温室气体 CO2 、CH4 、N2 O通量进行了原位观测 .结果表明 ,鼎湖山针阔叶混交林地表为 CO2 、N2 O的排放源 ,为 CH4 的弱汇 ,通量日变幅分别是 4 88.99～ 70 0 .5 7,0 .0 4 9～ 0 .10 8mg/ (m2· h)和- 0 .0 2 5～ - 0 .0 5 3mg/ (m2 · h) ;地表凋落物分解释放 CO2 约占总排放的 1/ 3;凋落物层和林下灌木对 CH4 和 N2 O的通量无明显影响 ;CO2 、N2 O的 9∶ 0 0观测值与其日平均值有明显差异。

Abstract:The subtropical coniferous and broad-leaved mixed forest, a typical successional monsoon forest, is one of the major forests in the Subtropics in China. Therefore, it is very important to estimate the fluxes of the greenhouse gases from the forest soil in order to evaluate the impact of subtropical forests on the greenhouse gases emission/uptake. This study investigated the diurnal variations of fluxes of three greenhouse gases: CO_2、CH_4、N_2O from the coniferous and broad-leaved mixed forest soil. Static c...

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