西辽河流域中晚全新世气候环境演变及其对农牧业演替的影响

何瑾, 刘演, 田彦国, 王泽, 肖鑫, 姜锋, 刘韬, 孙千里, 陈静, 李茂田, 陈中原

Mid-Late Holocene climate change and its impact on the agriculture-pastoralism evolution in the West Liaohe Basin

HE Jin, LIU Yan, TIAN Yanguo, WANG Ze, XIAO Xin, JIANG Feng, LIU Tao, SUN Qianli, CHEN Jing, LI Maotian, CHEN Zhongyuan

表2 XLW剖面沉积物光释光测年结果

Tab. 2 OSL dating results of XLW profile

编号 样品号 深度(cm) U(ppm) Th(ppm) K(%) 含水量(%) 环境剂量率(Gy/ka) 等效剂量(Gy) 年代(ka BP) L663* XLW-33 33 1.31 7.09 2.66 10 3.37 ± 0.16 24.46 ± 4.30 7.27 ± 1.33 L664* XLW-63 63 1.18 9.31 2.48 10 3.30 ± 0.16 9.25 ± 1.44 2.81 ± 0.46 L665 XLW-90 90 1.39 8.15 2.34 10 3.12 ± 0.15 6.26 ± 0.44 2.00 ± 0.17 L666 XLW-156 156 1.60 13.00 2.44 10 3.55 ± 0.17 8.69 ± 0.30 2.45 ± 0.14 L667 XLW-193 193 1.85 9.25 2.43 10 3.35 ± 0.16 9.28 ± 0.54 2.77 ± 0.21 L668 XLW-288 288 1.33 6.76 3.05 10 3.63 ± 0.18 12.04 ± 0.38 3.32 ± 0.20 L670 XLW-342 342 2.05 8.92 2.46 10 3.37 ± 0.16 13.57 ± 0.38 4.03 ± 0.22 L671 XLW-375 375 2.01 7.49 2.41 10 3.22 ± 0.16 16.01 ± 1.26 4.97 ± 0.46 L672 XLW-415 415 1.72 9.05 2.50 10 3.33 ± 0.16 49.29 ± 6.10 14.78 ± 1.97 L673 XLW-430 430 1.54 9.42 2.74 10 3.54 ± 0.18 61.90 ± 6.31 17.51 ± 1.98