全新世中晚期福建海岸沙丘记录的海岸环境与人类活动

doi:10.11821/dlxb201505007

Abstract

Abstract:

A coastal dune, Dongshan (DS) dune in Changle of China's Fujian Province is selected as a research object based on the systematic field investigation. Combined with the environmental index analysis and geological radar images, the dune development history and paleoenvironment significance in the study area since the late Holocene are explored through optically stimulated luminescence (OSL) chronology. Results are shown as follows. (1) Five sedimentary periods and three sedimentary discontinuity in the DS dune can be defined, which reflects that the change of the East Asian monsoon, and the developmental process of DS dune are the result of regional response to the East Asian winter monsoon, and they are well correlated with volcanic activity, winter temperatures of East China and precipitation of summer monsoon at the same time. (2) Meanwhile, DS profile has preserved the sea-level change information of the Fuzhou Basin since nearly 6 ka BP. The widespread thalassocratic periods were recorded clearly in South China at 5.6-2.8 ka BP, 2.8-1.7 ka BP and 1.7-0.8 ka BP, respectively. (3) Artificiality and the mark of human activity are observed in the DS dune, and porcelain shards and conchs have been found in the cultural layer. The development processes of the DS dune accord well with the records of human activities and neolithic cultural sequences in northeast Fujian. The human activities are mainly affected by the natural environment at 5.6-2.8 ka BP and 2.8-1.7 ka BP, respectively. Tang and the Five Dynasties were the recovery stages of social economy in Fujian after 1.7 ka BP.

Key words: coastal dune, OSL, sea level, East Asia monsoon, human activities

Jianhui JIN, Zhizhong LI, Fangen Hu, Hui ZHANG, Xianli WANG, Jing XIA, Feng JIANG, Tao DENG, Shuyu JIN, Xiuming LIU. Mid-Holocene coastal environment and human activities recorded by a coastal dune in Fujian Province, China[J].Acta Geographica Sinica, 2015, 70(5): 751-765.

Figures/Tables 13

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样品	出土地点	碳十四年代 (BP)	树轮校正后年代
样品	出土地点	碳十四年代 (BP)	1σ (68.2%)	2σ (95.4%)
贝壳	长乐东山海岸沙丘	1395±35	620AD (68.2%) 655AD	585AD (95.4%) 680AD

出土样品名称	器型描述	考古学年代
碗 (残片)	饼足、施青釉,未及底、底足露胎、内有支钉痕;	唐末宋初
罐 (残片)	施青釉、四系罐,未及底,底足露胎;	唐末宋初
瓮 (残片)	部分施青釉瓷器残片,部分陶器残片,器型无法辨认	?

野外编号	埋深(m)	U(µg/g)	Th(µg/g)	K(%)	等效剂量E.D(Gy)	年剂量Dy(Gy/ka)	含水量(%)	年龄(Ka)
FS01	8.5	1.38	8.14	1.4	15.18±0.97	2.70±0.11	8	5.6±0.4
FS02	8.0	0.87	4.39	1.52	6.32±0.20	2.30±0.09	8	2.8±0.1
FS04	7.0	1.53	7.94	1.73	5.23±0.19	3.07±0.12	8	1.7±0.1
FS05	6.5	1.25	8.82	1.90	0.78±0.05	3.24±0.13	8	0.2±0.02
FS06	6.0	0.72	3.68	2.16	1.09±0.01	2.83±0.11	8	0.4±0.02
FS07	5.5	0.94	4.63	2.08	1.38±0.13	2.92±0.12	8	0.5±0.05
FS08	5.0	0.74	3.38	2.22	1.58±0.10	2.92±0.12	8	0.5±0.04
FS12	3.0	0.92	4.26	2.15	1.80±0.07	2.98±0.12	8	0.6±0.03
FS15	1.5	0.79	3.19	2.04	2.14±0.34	2.76±0.11	8	0.8±0.06

绝对年龄	公元纪年	剖面发育期	海平面变化	闽东北沿海人类活动
0.2 ka BP-至今	1810 AD~	Ⅴ (风沙活动期)	海进期、接近现代海面	《福建沿海图说》：数十年前,东海滨田舍相望,今则一片平沙。
0.8 ka~0.2 ka BP	1210 AD~1810 AD	Ⅳ (风沙稳定期)	海退期、低海面期	港湾淤浅,海滩成陆,围垦开始,流沙遂起;
1.7 ka~0.8 ka BP	310 AD~1210 AD	沉积间断	海进期、高海面期	施青釉饼足碗,施青釉四系罐,贝类壳体宋初设“牧监”,风沙下覆泥炭土
~1.7 ka BP	~310 AD	Ⅲ (潮滩沉积期)	海退期	——
2.8~1.7 ka BP	——	沉积间断	高海面期	——
~2.8 ka BP	——	Ⅱ (潮滩沉积期)	海退期	黄土仑晚期文化;
5.6~2.8 ka BP	——	沉积间断	高海面期	昙石山文化 (昙石山遗址,庄边山下层遗址);黄瓜山文化 (庄边山上层遗址,黄瓜山遗址);黄土仑文化 (古洋遗址,黄土仑遗址);
~5.6 ka BP	——	Ⅰ (潮滩沉积期)	海退期	壳丘头文化 (平潭壳丘头下层遗址);台湾大坌坑文化;福建闽侯白沙溪头遗址;

Mid-Holocene coastal environment and human activities recorded by a coastal dune in Fujian Province, China

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[14]	ZHANG Wei, DONG Yingwei, YU Zhilong, HE Mingyue. Discussion of the difference of the timing and extent of glaciers in the late Quaternary controlled by the westerly and East Asia monsoon as well as the tectonic movement [J]. Acta Geographica Sinica, 2013, 68(7): 909-920.
[15]	ZHANG Yuzhu, HUANG Chunchang, PANG Jiangli, ZHOU Yali, ZHA Xiaochun, WANG Longsheng, ZHOU Liang. OSL dating of the sediment stratigraphy of the Lajia Ruins in the Guanting Basin in the Upper Yellow River Basin [J]. Acta Geographica Sinica, 2013, 68(5): 626-639.