Tree-ring-based May-July mean temperature history for Luliang Mountains, China, since 1836
Tree-ring-based May-July mean temperature history for Luliang Mountains, China, since 1836
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DOI：
10.1007/s11434-010-3235-z
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发表时间：
2010-09-01
影响因子：
--
通讯作者：
Sun Bo
中科院分区：
文献类型：
--
作者：
Cai QiuFang;Liu Yu;Sun Bo
As a consequence of recent global warming and its social impact, regional climate change is attracting an increasing amount of attention from scientists. A May-July temperature proxy extending back to 1836 was developed from tree-ring width of Chinese pine (Pinus tabulaeformis Carr.) found in the middle Luliang Mountains, northern China. Correlations with climatic data from six nearby meteorological stations range from -0.58 to -0.65, indicating a strong response of tree-ring index to May-July mean temperatures, which were subsequently reconstructed. The reconstruction captures 45% (F=38.474, P < 0.001) of the regional variance in the instrumental data over the calibration period 1955-2003. Reconstructed warm and cold periods were verified by additional temperature reconstructions based on tree-ring data from northern China. In addition, the reconstruction was significantly correlated with May-July mean temperatures from 13 other meteorological stations in northern China, suggesting that our reconstruction is also representative of north-central China. The warming trend during the second half of the 20th century is seen in the reconstruction, but only the 1994-2002 mean temperature seems unprecedented over the whole reconstructed period.
