Holocene peatland development and carbon stock of Zoige peatlands, Tibetan Plateau: a modeling approach
Holocene peatland development and carbon stock of Zoige peatlands, Tibetan Plateau: a modeling approach
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青藏高原若尔盖泥炭地全新世泥炭地发育和碳储量：建模方法
DOI：
10.1007/s11368-018-1960-0
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发表时间：
2018-02
影响因子：
3.6
通讯作者：
He Yixin
中科院分区：
文献类型：
--
作者：
Liu Xinwei;Chen Huai;Zhu Qiuan;Wu Jianghua;Steve Frolking;Zhu Dan;Wang Mei;Wu Ning;Peng Changhui;He Yixin
目的尽管中国对泥炭地发育和碳动态的研究很多，特别是青藏高原东部边缘若尔盖泥炭地，但将模型作为研究泥炭地发育的有效方法的还很少。为了填补中国高寒泥炭地发育的知识空白，并与前人的研究进行比较，我们对若尔盖全新世泥炭地进行了模拟研究。材料和方法采用全新世泥炭地模型进行模拟。驾驶数据是基于古气候研究重建的。结果和讨论基于我们的结果，泥炭队列质量平均累积速率为0.45亿mm/年−1(范围为0.38~0.50亿mm/年−1)。C的平均积累速率约为0.026 kg C/m−2Year−1(变化范围为0.023~0.029 kg C/m−2年−1)，全新世的C积累速率峰值在7~6 ka BP之间。泥炭深度为5.38米(从4.6米到5.99米不等)。若尔盖泥炭的总储量约为1.76Pg(从1.58到2.29Pg)，全新世时若尔盖泥炭地的碳储量估计为0.432 PgC(从0.348到0.479 PgC)。经过模型校正和验证，模拟结果表明泥炭发育和碳积累受地下水位变化的控制。结论模拟结果表明若尔盖泥炭地是中国泥炭地碳储量最重要的组成部分。尽管HPM缺乏温度和不完全气候因子的驱动数据，但它在参数设置上的局限性不应抵消建模方法在提高我们对若尔盖地区泥炭地碳及其控制因子动态的长期尺度的理解方面的附加值，目前该地区的研究很少。
PurposeDespite the many studies about peatland development and carbon dynamics in China, especially for Zoige peatlands on the eastern edge of the Tibetan Plateau, few apply modeling as an effective approach to study peatland development. In order to fill up the knowledge gaps of China alpine peatland development and to provide a comparison with previous research, we studied the Zoige peatlands in Holocene with a modeling approach.Materials and methodsSimulated results were obtained by the Holocene peatland model (HPM). Driving data was reconstructed based on paleoclimate studies. Model calibration and performance index validation were done by comparing the model output with literature data about peat age depth.Results and discussionBased on our results, the peat cohort mass mean accumulation rate was 0.45 mm year−1(ranging from 0.38 to 0.50 mm year−1). The mean C accumulation rate was about 0.026 kg C m−2year−1(ranging from 0.023 to 0.029 kg C m−2year−1), with a peak accumulation rate around 7 ka to 6 ka BP during the Holocene. The peat depth was 5.38 m (ranging from 4.6 to 5.99 m). The total peat storage in Zoige was about 1.76 Pg (ranging from 1.58 to 2.29 pg), and the carbon stock was estimated as 0.432 pg C (ranging from 0.348 to 0.479 pg C) in Zoige peatlands during the Holocene. After model calibration and validation, simulated results indicated that peat development and carbon accumulation were controlled by variation of water table depth (WTD).ConclusionsSimulated results indicated that the Zoige peatlands are the most important component of peatlands in China in terms of carbon stock. Though HPM lacks in driving data of temperature and incomplete climate factors, its limitations in the parameter setting should not offset the added value of the modeling approach in improving our understanding of peatland carbon and their controlling factor dynamics at the long-term scales in the Zoige region where there are very few studies so far.
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影响因子：
4.9
作者：
F. St-Hilaire;Jianghua Wu;N. Roulet;S. Frolking;P. Lafleur;E. Humphreys;V. Arora
通讯作者：
F. St-Hilaire;Jianghua Wu;N. Roulet;S. Frolking;P. Lafleur;E. Humphreys;V. Arora
影响因子：
1.7
作者：
T. Moore;R. Knowles
通讯作者：
T. Moore;R. Knowles
影响因子：
4.9
作者：
Zicheng Yu
通讯作者：
Zicheng Yu
DOI：
--
发表时间：
2001
期刊：
--
影响因子：
--
作者：
Sun Guang
通讯作者：
Sun Guang
若尔盖高原近期泥炭碳积累量高于全新世
影响因子：
4
作者：
Yixin He;Jianqing Tian;Xinquan Zhao;Yao Zhang
通讯作者：
Yao Zhang