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Terrestrial organic carbon storage in a British moorland

机译：英国高沼地中的陆地有机碳存储

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Accurate estimates for the size of terrestrial organic carbon (C) stores are needed to determine their importance in regulating atmospheric CO2 concentrations. The C stored in vegetation and soil components of a British moorland was evaluated in order to: (i) investigate the importance of these ecosystems for C storage and (ii) test the accuracy of the United Kingdom's terrestrial C inventory. The area of vegetation and soil types was determined using existing digitized maps and a Geographical Information System (GIS). The importance of evaluating C storage using 2D area projections, as opposed to true surface areas, was investigated and found to be largely insignificant. Vegetation C storage was estimated from published results of productivity studies at the site supplemented by field sampling to evaluate soil C storage. Vegetation was found to be much less important for C storage than soil, with peat soils, particularly Blanket bog, containing the greatest amounts of C. Whilst the total amount of C in vegetation was similar to the UK national C inventory's estimate for the same area, the national inventory estimate for soil C was over three times higher than the value derived in the current study. Because the UK's C inventory can be considered relatively accurate compared to many others, the results imply that current estimates for soil C storage, at national and global scales, should be treated with caution.
机译：需要准确估算陆地有机碳（C）储存库的大小，以确定它们在调节大气CO2浓度中的重要性。为了评估：（i）研究这些生态系统对C储存的重要性，以及（ii）测试英国陆地C清单的准确性，对储存在英国高地的植被和土壤成分中的C进行了评估。植被和土壤类型的面积是使用现有的数字化地图和地理信息系统（GIS）确定的。调查研究了使用2D面积投影来评估C存储量的重要性，而不是真正的表面积，这一重要性被忽略了。植被碳储量是根据已发表的该地区生产力研究的结果估算的，并辅以田间采样以评估土壤碳储量。人们发现，植被对碳的存储比土壤重要得多，而泥炭土，尤其是毯盖沼泽，土壤中的碳含量最高。植被中碳的总量与英国全国相同地区碳库的估算值相似，全国土壤C的库存估算值比当前研究得出的值高出三倍以上。因为与许多其他国家相比，英国的碳清单可以被认为是相对准确的，所以结果表明，应谨慎对待目前在国家和全球范围内对土壤碳储存的估计。

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