Stockholm Environment Institute, Environment Department, University of York, YO10 5NG, UK.
Stockholm Environment Institute, Environment Department, University of York, YO10 5NG, UK.
Sci Total Environ. 2018 Oct 15;639:769-772. doi: 10.1016/j.scitotenv.2018.05.192. Epub 2018 May 26.
Chamber carbon flux measurements are routinely used to assess ecosystem carbon sink/source dynamics. Often these point measurements enclose considerable vegetation biomass, with fluxes upscaled in space and time for each vegetation type. Here we assess the importance of including the volume of peatland dwarf shrub vegetation in chamber flux calculations and outline a simple but effective method of assessing plant volumes. We show that inclusion of plant volumes significantly affects fluxes and that this effect becomes greater as the proportion of chamber volume occupied by plants increases. Moreover, we demonstrate that, with an initial destructive laboratory assessment for each plant species and a little practice at volume estimation, plant volumes can be accurately assessed non-destructively in the field.
室碳通量测量通常用于评估生态系统碳汇/源动态。通常，这些点测量包含相当大的植被生物量，通量在空间和时间上按每种植被类型进行升尺度。在这里，我们评估了在室通量计算中包含泥炭地矮灌木植被体积的重要性，并概述了一种简单但有效的评估植物体积的方法。我们表明，包含植物体积会显著影响通量，并且随着植物占据室体积的比例增加，这种影响会变得更大。此外，我们证明，通过对每种植物物种进行初始破坏性实验室评估，并在体积估计方面进行一些实践，植物体积可以在野外进行非破坏性地准确评估。
