Higher recent peat C accumulation than that during the Holocene on the Zoige Plateau
Higher recent peat C accumulation than that during the Holocene on the Zoige Plateau
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若尔盖高原近期泥炭碳积累量高于全新世
DOI：
10.1016/j.quascirev.2015.01.025
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发表时间：
2015-04
影响因子：
4
通讯作者：
Yao Zhang
中科院分区：
文献类型：
--
作者：
Yixin He;Jianqing Tian;Xinquan Zhao;Yao Zhang
为了了解气候变化下高山泥炭地碳的去向，本研究旨在利用经验泥炭芯数据(14C和137CS)和模拟方法，测量若尔盖高原7个具有代表性的泥炭站点近几十年和全新世期间的碳积累。过去50年观测到的表观碳积累速率为75(35-123)g/C/m−2yr−1，几乎是整个全新世19(7-30)g/C/m−2yr−1的四倍。尽管德纳河曲和红原泥炭岩芯的地下水位极低，但考虑到分解历史，泥炭的平均预期碳积累速率仍然是整个全新世泥炭净碳吸收速率的近1.6倍。近几十年来，若尔盖高原新积累的泥炭碳达到0.4Tg/C=−1(1Tg=11012g)。总体而言，气候变暖对若尔盖高原泥炭地近期碳积累的影响取决于其水分条件。高寒高原泥炭碳储存受到人类活动(排水)和气候变化的威胁，气温升高，降水减少，造成泥炭地干旱。
In order to understand the carbon fate of alpine peatlands under climate change, this study aimed to measure carbon accumulation in recent decades and that during the Holocene at seven representative peat sites on the Zoige Plateau using empirical peat core data (14C and137CS) and modeling approaches. The observed apparent carbon accumulation rate over the past 50 years was 75 (35–123) g C m−2yr−1, nearly four times that of 19 (7–30) g C m−2yr−1over the whole Holocene. With decomposition history included in consideration by using modeling approaches, the average expected peat carbon accumulation rate was still nearly 1.6 times that of the modeled net carbon uptake rate of peats accumulated over the whole Holocene, though exceptions were found for Denahequ and Hongyuan peat cores with extremely low water table levels. The newly accumulated peat carbon of the Zoige Plateau amounted to 0.4 Tg C yr−1(1 Tg = 1012g) during recent decades. Overall, the effect of climate warming on recent C accumulation of peatlands on the Zoige Plateau is dependent on their water conditions. The peat C storage on the alpine Plateau is threatened by human activities (drainage) and continuous climate change with increasing temperature and decreasing precipitation which cause dryness of peatlands.
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影响因子：
8.3
作者：
TALMA, AS;VOGEL, JC
通讯作者：
VOGEL, JC
青藏高原植被绿化趋势（2000-2009年）与气候调控
影响因子：
1.7
作者：
Wang Cuizhen;Yan Dongmei;Li BIn;Li Jing
通讯作者：
Li Jing
影响因子：
4
作者：
Benjamin L Turner;S. Joseph Wright
通讯作者：
Benjamin L Turner;S. Joseph Wright
影响因子：
16.6
作者：
Zheng, Yanhong;Singarayer, Joy S.;Cheng, Peng;Yu, Xuefeng;Liu, Zhao;Valdes, Paul J.;Pancost, Richard D.
通讯作者：
Pancost, Richard D.
DOI：
10.1016/j.egypro.2011.03.180
发表时间：
2011
期刊：
Energy Procedia
影响因子：
--
作者：
Zhang Xiaohong;Liu Hong-yu;Xing Zisheng
通讯作者：
Zhang Xiaohong;Liu Hong-yu;Xing Zisheng