A database and synthesis of northern peatland soil properties and Holocene carbon and nitrogen accumulation
A database and synthesis of northern peatland soil properties and Holocene carbon and nitrogen accumulation
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DOI：
10.1177/0959683614538073
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发表时间：
2014-09-01
期刊：
影响因子：
2.4
通讯作者：
Zhou, Weijian
中科院分区：
文献类型：
--
作者：
Loisel, Julie;Yu, Zicheng;Zhou, Weijian
在这里，我们提出的结果，从最全面的汇编全新世泥炭土壤特性与相关的碳和氮积累率为北方泥炭地。我们的数据库包括来自北纬45度以北215个地点的268个泥炭芯。它包括最近才获得泥炭碳数据的地区，如西西伯利亚低地、哈德逊湾低地、俄罗斯远东的堪察加半岛和青藏高原。对于所有北方泥炭地，泥炭藓泥炭的有机质中的碳含量估计为42 +/- 3%（标准差），非泥炭藓泥炭为51 +/- 2%，总体为49 +/- 2%。干体积密度平均为0.12 +/- 0.07 g/cm（3），有机物体积密度平均为0.11 +/- 0.05 g/cm（3），泥炭中的总碳含量平均为47 +/-6%。一般来说，泥炭藓和非泥炭藓泥炭类型之间的泥炭性质有很大的差异。根据来自127个地点的151个泥炭芯，全新世期间时间加权泥炭碳累积率平均为23 +/- 2（平均标准误差）g C/m（2）/年，其中碳累积率最高（25-28 g C/m（2）/年）记录在气候比现在温暖的全新世早期。此外，我们估计北方泥炭地的碳和氮库分别为436和10千兆吨。该数据库可在https://peatlands.lehigh.edu上公开查阅。
Here, we present results from the most comprehensive compilation of Holocene peat soil properties with associated carbon and nitrogen accumulation rates for northern peatlands. Our database consists of 268 peat cores from 215 sites located north of 45 degrees N. It encompasses regions within which peat carbon data have only recently become available, such as the West Siberia Lowlands, the Hudson Bay Lowlands, Kamchatka in Far East Russia, and the Tibetan Plateau. For all northern peatlands, carbon content in organic matter was estimated at 42 +/- 3% (standard deviation) for Sphagnum peat, 51 +/- 2% for non-Sphagnum peat, and at 49 +/- 2% overall. Dry bulk density averaged 0.12 +/- 0.07 g/cm(3), organic matter bulk density averaged 0.11 +/- 0.05 g/cm(3), and total carbon content in peat averaged 47 +/- 6%. In general, large differences were found between Sphagnum and non-Sphagnum peat types in terms of peat properties. Time-weighted peat carbon accumulation rates averaged 23 +/- 2 (standard error of mean) g C/m(2)/yr during the Holocene on the basis of 151 peat cores from 127 sites, with the highest rates of carbon accumulation (25-28 g C/m(2)/yr) recorded during the early Holocene when the climate was warmer than the present. Furthermore, we estimate the northern peatland carbon and nitrogen pools at 436 and 10 gigatons, respectively. The database is publicly available at https://peatlands.lehigh.edu.