东北地区以泥炭为信息载体的全新世气候变迁研究进展

Holocene Environmental and Climatic Changes from the Information of Peat Bog Sediment in Northeastern China

泥炭作为一种地质信息载体,在全球环境变化研究中起着越来越重要的作用。我国东北地区地处全球变化的敏感区,泥炭地研究的意义更为显著。笔者针对近年来东北地区泥炭地研究的多种成果,对该区全新世以来泥炭沉积和区域气候变迁历史进行了系统分析。得出:①东北地区泥炭有三次沉积高峰,分别始于早全新世、中全新世与晚全新世初期;②该区10000a以来大体上经历了冷湿-温暖适宜-凉湿-温暖偏干-冷干-寒冷略湿-变暖这样一个气候变迁过程。

As geological information records, peat bogs are playing more and more important role in the global environmental change study. Northeastern China is located in one of the sensitizing ranges on the earth, so peat bog study of this area is more remarkable. Most of the research results of peat bogs in Northeastern China have been analyzed here. Evolution of peat forming and the climatic changes in Holocene were both educed, that is：① there were three peak periods during the peat sedimentation, one started from the Mid-Holocene and the other from the initial stages of Late Holocene; ② this area has experienced seven main climatic transition stages since 10,000 a B.P.： from wet-cold, suitable warm, cool-wet, warm on the dry side, cold-dry, cold on the wet side to warming.