全新世高温期气候不稳定性记录

CLIMATIC INSTABILITY RECORDS OF MEGATHERMAL PERIOD IN HOLOCENE

对黄土高原黄土剖面中的黑垆土进行了植物孢粉、植物硅酸体、碳同位素和化学分析测试，结果表明，黑垆土良好地记录了全新世高温期气候不稳定性，在大致９～６ｋａＢ．Ｐ．期间，曾发生数次强度不等的快速变化。这为当今及未来气候变化趋势预测提供了参照，同时表明，气候系统很复杂，过去关于气候演化过程的认识将面临新的挑战，气候系统内部某因子的变动都可能牵动整个系统从而发生不规则的快速变化事件。

The climatic instability of megathermal period in Holocene was well recorded in the dark loessial soil of the Loess Plateau section.Several quick changes with different intensities took place during about 9～6 kaB.P.This provides the reference for the trend prediction of climate at present and in the future.Meanwhile,it indicates that the climate system is very complex and the understanding of the climate evolution in the past will face the new challenge and the beneficial inspiration should be drawn from it.Human being must restrain their behavior within the law of nature,earnestly protect the environment,and actively improve the quality of ecoenvironment.Otherwise,human being will be seriously punished by the nature.