A 6000-year record of changes in drought and precipitation in northeastern China based on a δ13C time series from peat cellulose
A 6000-year record of changes in drought and precipitation in northeastern China based on a δ13C time series from peat cellulose
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DOI：
10.1016/s0012-821x(00)00367-8
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发表时间：
2001-02
影响因子：
5.3
通讯作者：
Yetang Hong;Zhen Wang;Hongbo Jiang;Q. Lin;B. Hong;Yongxuan Zhu;Yongbo Wang;L. Xu;X. Leng-X.-Len
中科院分区：
文献类型：
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作者：
Yetang Hong;Zhen Wang;Hongbo Jiang;Q. Lin;B. Hong;Yongxuan Zhu;Yongbo Wang;L. Xu;X. Leng-X.-Len
本文报道了一个新的泥炭δ 13 C湿度或降水代用记录。记录显示，在过去6000年中，发生了两次重大的气候变化和8次严重的干旱期，所有这些都具有全球性的普遍发生的性质。降水量的变化周期约为70、80、90、107、110、123、134、141、162、198、205、249、278、324、389、467、584、834和1060年。干旱的发生和持续时间以及降水的周期性与太阳变率有很好的对应关系。泥炭δ 13 C、泥炭δ 18 O和大气Δ 14 C之间的显著相关性表明，在几十年到几百年的时间尺度上，干旱和降水的变化可能是由大气环流和海气相互作用的大尺度变化引起的，而这种变化似乎与太阳变率有关。
We report a new peat δ13C proxy record for humidity or precipitation based on C3 plants from northeastern China. The record reveals two times of significant climate shift and eight severe drought periods during the past 6000 years, all of which have the nature of widespread global occurrence. The variability of precipitation shows periodicities of around 70, 80, 90, 107, 110, 123, 134, 141, 162, 198, 205, 249, 278, 324, 389, 467, 584, 834 and 1060 years. The occurrence and persistent times of drought and periodicities of precipitation show good correspondence with solar variability. The remarkable correlations between peat δ13C, peat δ18O and atmospheric Δ14C suggest that on timescales of decades to centuries the changes in drought and precipitation are likely caused by variations of atmospheric circulation and atmosphere–ocean interactions in large-scale patterns that seem to be related to solar variability.