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    姚玉刚, 张一平, 于贵瑞, 宋清海, 谭正洪, 赵俊斌. 热带森林植被冠层CO2储存项的估算方法研究[J]. 北京林业大学学报, 2011, 33(1): 23-29.
    引用本文: 姚玉刚, 张一平, 于贵瑞, 宋清海, 谭正洪, 赵俊斌. 热带森林植被冠层CO2储存项的估算方法研究[J]. 北京林业大学学报, 2011, 33(1): 23-29.
    YAO Yu-gang, ZHANG Yi-ping, YU Gui-rui, SONG Qing-hai, TAN Zheng-hong, ZHAO Jun-bin. Estimation of CO2 storage flux between forest and atmosphere in a tropical forest[J]. Journal of Beijing Forestry University, 2011, 33(1): 23-29.
    Citation: YAO Yu-gang, ZHANG Yi-ping, YU Gui-rui, SONG Qing-hai, TAN Zheng-hong, ZHAO Jun-bin. Estimation of CO2 storage flux between forest and atmosphere in a tropical forest[J]. Journal of Beijing Forestry University, 2011, 33(1): 23-29.

    热带森林植被冠层CO2储存项的估算方法研究

    Estimation of CO2 storage flux between forest and atmosphere in a tropical forest

    • 摘要: 评价植被冠层CO2储存项有助于提高森林--大气层面净生态系统CO2交换量(FNEE)的估算精度。基于西双版纳热带季节雨林2年完整的涡度相关系统和CO2廓线的同步观测资料,详细分析涡度相关法(Fs--EC)和廓线法(Fs--PM)CO2储存项估算结果和变化趋势。结果表明:1)廓线法CO2储存项年平均日变化曲线相比涡度相关法能更真实地反映冠层内外CO2浓度时空变化特征。2)廓线法估算的CO2储存项年总量值为-0.04 t/ (hm2•a),涡度相关法为-0.17 t/(hm2•a)。3)由于复杂地形条件下的西双版纳热带季节雨林存在较大CO2浓度梯度,采用廓线法进行CO2储存项估算比涡度相关法更为合适。

       

      Abstract: Evaluating CO2 storage flux may help us to improve the calculation accuracy of net ecosystem CO2 exchange (FNEE). Based on data of two consecutive years from an eddy covariance system and a vertical CO2 profile system in a tropical seasonal rainforest in Xishuangbanna, southwest China, CO2 storage flux was calculated by two methods, eddy covariance (Fs-EC) and profile (Fs-PM) methods. Results show that: 1) Comparing with eddy covariance method, diurnal variation of CO2 storage flux calculated by profile method could directly reflect the spatial-temporal variation of CO2; 2) Total amount value of CO2 storage flux calculated by profile method was -0.04 t/(hm2•year), and the value calculated by eddy covariance method was -0.17 t/(hm2•year); 3) Under complex terrain and tall forest conditions, with a large concentration gradient of CO2, profile method for calculation of CO2 storage flux had an advantage over eddy covariance method.

       

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