Abstract:
Arctic is favored by researchers due to its sensitivity and feedback to Global Climate Change, and the organic
δ13C record of lake sediment is a key indicator for the environmental climate change. The sedimentary rates and
δ13C of two sediment cores (No.1 and No.2), collected from two lakes near the Arctic Yellow River Station of China during July to Aug of 2007, were determined in order to investigate the climate change of the Arctic during the past centuries. The sedimentary rates, determined with
210Pb method, of sample No.1 and sample No.2 were 1.05 mm/a and 0.91 mm/a, respectively, and the vertical distribution of organic
δ13C of two sediment cores have similar trends during the same period. The results show that the temperature at the Arctic Yellow River Station of China during the last three centuries was unsteady, and was alternating with a “lower-higher-lower” process.