Institute of Desert Meteorology, China Meteorological Administration, Urumqi, China.
Int J Biometeorol. 2012 Jul;56(4):765-74. doi: 10.1007/s00484-011-0431-8. Epub 2011 Jun 24.
Seven different tree-ring parameters were obtained from Chinese pine (Pinus tabulaeformis) in the Changling Mountains, China. The chronologies were analyzed individually and then compared with each other. The climate response analysis shows that total precipitation (September-July) is the main factor limiting the radial growth of Chinese pine in the Changling Mountains. Thus, the residual earlywood width chronology was used to estimate precipitation (September-July) for the period AD 1691-2006, and explained 46.9% of the precipitation variance. Drought events in our reconstruction are compared to historical archives for Gansu and north-central China. The results reveal the climatic extremes over much of Gansu. Some events have had profound impacts on the Gansu people over the past several centuries. Spatial analysis shows that the precipitation reconstruction has strong common signals for North-central China. The reconstructed series is correlated significantly with Helan Mountains Palmer drought severity index (PDSI), as well as with previous results from Jiuquan, Shandan, Huashan, Luya Mountains, and even the state of Mongolia. Our results suggest that some dry periods are coincident with solar minima over the past several hundred years. Multitaper spectral analysis reveals the existence of significant 24.4-year, 12.2-year, and 2.4- to 3.4-year periods of variability.
从中国长岭山的油松（Pinus tabulaeformis）中获得了七个不同的树木年轮参数。对年表进行了单独分析，然后进行了相互比较。气候响应分析表明，总降水量（9 月至 7 月）是限制长岭山油松径向生长的主要因素。因此，使用剩余早材宽度年表来估算公元 1691 年至 2006 年的降水（9 月至 7 月），解释了 46.9%的降水方差。将我们的重建与甘肃和中国中北部的历史档案进行了干旱事件的比较。结果揭示了甘肃大部分地区的气候极端情况。在过去的几个世纪里，一些事件对甘肃人民产生了深远的影响。空间分析表明，降水重建对中国中北部具有强烈的共同信号。重建系列与贺兰山帕尔默干旱严重指数（PDSI）以及酒泉、山丹、华山、芦芽山，甚至蒙古国的前期结果显著相关。我们的结果表明，过去几百年中，一些干旱时期与太阳极小期同时发生。多谱分析揭示了存在显著的 24.4 年、12.2 年以及 2.4 至 3.4 年的变化周期。
