CAI Cheng1,2, HONG Bing1, ZHU Yong-xuan1, HONG Ye-tang1, WANG Yu1, PENG Hai-jun1,2, YUAN Ling-gui1,2
1. State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China;
2. University of Chinese Academy of Sciences, Beijing 100039, China
Abstract: By analyzing the high-resolution records of peat humification degree, carbon content, dry bulk density and carbon and oxygen isotopes in cellulose, this paper reconstructed the Holocene climate changes and carbon accumulation rate of the Hongyuan peatland, southwest China. In the period of 11.5~6.2 ka B.P., the warm and humid early Holocene, the Hongyuan peat underwent a high carbon accumulation rate and showed characteristics of northern peatlands, the primary productivity was much higher than the decomposition. In the period 4.5~2.5 ka B.P., the cool and moist climate promoted rapid development of net primary productivity and inhibited peat decomposition, the Hongyuan peat underwent a high carbon accumulation rate and showed the characteristics of tropical peatlands.
Keywords: Hongyuan peat Holocene climate change carbon accumulation rate net primary productivity
