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《Earth and Environment》 2013-01
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Study of Humification Degree for Estimating Organic Matter Contents of Peat on the Eastern Margin of the Tibetan Plateau

SHENG En-guo1,2,XU Hai1,LAN Jiang-hu1,2,LIU Bin1,2(1.State Key Laboratory of Loess and Quaternary Geology,Institute of Earth Environment,Chinese Academy of Sciences,Xi'an 710075,China;2.Graduate University of the Chinese Academy of Sciences,Beijing 100049,China)  
Relationship between humification degree and loss-on-ignition was investigated based on four peat profiles of Butuo,Hongyuan,Lajishan and Ebo,on the eastern margin of the Tibetan Plateau.The results showed that variations in humification degree coincided well with organic matter.Our study shows that humification degree of peat on the eastern margin of the Tibetan Plateau can effectively reflect organic matter contents in the Holocene warm-wet monsoon climate,so it can be used as the proxy index of organic matter.The alkali-extraction solution was used to determine the humification degree.This method consumes a little of solid sample,so in the condition of a small amount of sample(for example,peat drilling),using peat humification degree as the proxy index of organic matter has great significance for promotion.
【Fund】: 国家自然科学基金(41073103);; 中科院重要方向项目(KZCX2-EW-QN103);; 科技部973项目(2010CB833405)联合资助
【CateGory Index】: S153
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