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首页> 外文期刊>The Forestry Chronicle >Vertical and seasonal variations in soil CO2 production in a 55-year-old oriental arborvitae (Platycladus orientalis) plantation in China
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Vertical and seasonal variations in soil CO2 production in a 55-year-old oriental arborvitae (Platycladus orientalis) plantation in China

机译：55岁东方Arborvitae（Platycladus Orientalis）在中国种植园土壤二氧化碳生产的垂直和季节变化

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摘要

The aim of this work was to explore the vertical and seasonal variations of CO2 within the soil profile based on Fick's law of diffusion in an oriental arborvitae plantation. We continuously measured the soil CO2 concentration profile using CO2 sensors buried at different depths in a coniferous forest in northern China and calculated the CO2 flux based on the profile measurements using a dynamic model. The diurnal pattern of CO2 concentration and flux fluctuated during the day and varied less at night. The CO2 profile had a vertical gradient, with the highest concentrations in the deepest soil layers. The CO2 flux had a clear seasonal pattern with a maximum in summer and a minimum in winter. The contributions of the H, A, B, and C horizons to the total CO2 flux were 75.38, 13.52, 7.61, and 3.49%, respectively. Q(10) was 2.668, 4.469, 1.175, and 3.333 in the H, A, B, and C horizons, respectively. The CO2 flux determined from the concentration profiles agreed well with the CO2 flux measured by open dynamic chambers, suggesting that this model could be used to successfully measure soil CO2 emissions and to describe the processes underlying CO2 efflux.
机译：这项工作的目的是根据Fick arborvitae种植园中的扩散法探讨土壤剖面内二氧化碳的垂直和季节变化。我们使用在中国北方的针叶林下埋在不同深度的CO2传感器中，使用CO 2传感器连续测量土壤CO2浓度谱，并根据使用动态模型计算CO2通量。在白天的二氧化碳浓度和助熔剂的昼夜模式波动，并且在夜间变得越来越多。 CO2型谱具有垂直梯度，最深的土层中具有最高浓度。 CO2助焊剂在夏季最大的季节性模式和冬季最少。 H，A，B和C地平线对总二氧化碳通量的贡献分别为75.38,13.52,7.61和3.49％。 Q（10）分别为H，A，B和C视野中的2.668,4.469,1.175和3.333。从浓度分布确定的CO 2通量很好地通过开放动态室测量的CO2磁通量良好，这表明该模型可用于成功测量土壤二氧化碳排放并描述CO2 Efflux的潜水过程。

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  • 来源
    《The Forestry Chronicle》 |2016年第4期|共10页
  • 作者

    Fan Zhiping; Tu Zhihua; Qin Yanbin; Li Fayun;

  • 作者单位

    Liaoning Shihua Univ Inst Ecoenvironm Sci 1 West Dandong Rd Fushun 113001 Liaoning Provin Peoples R China;

    Liaoning Shihua Univ Inst Ecoenvironm Sci 1 West Dandong Rd Fushun 113001 Liaoning Provin Peoples R China;

    Shenyang Mil Area Gen Hosp Dept Med Adm 83 Wenhua Rd Shenyang 110001 Liaoning Peoples R China;

    Liaoning Shihua Univ Inst Ecoenvironm Sci 1 West Dandong Rd Fushun 113001 Liaoning Provin Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 林业;
  • 关键词

    Platycladus orientalis plantation; soil CO2 profile; flux; temperature; water content;

    机译：Platycladus Orientalis种植园;土CO2型材;助焊剂;温度;水含量;

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