ON THE ENVIRONMENTAL CHANGES SINCE 15 ka BP IN THE ORDOS PLATEAU
-
摘要: 通过鄂尔多斯高原中部折家梁海子湖泊沉积物的粒度、磁化率、色度等环境指标综合分析，探讨鄂尔多斯高原距今15 ka以来的环境演化。鄂尔多斯高原在距今14.3~11.9 ka，深度205~235 cm，为冷干环境；距今11.9~4.0 ka，指标特征反映了降水较为丰富，湖泊扩张，湖泊演化为稳定的深湖环境。潮湿气候环境可能是由于季风活动加剧所致；距今4.0~0 ka，深度85~0 cm，以大幅度波动为特征，表明气候干冷和湿暖交替，风沙发生的频率和强度加强。其中又以距今1.2~1.4 ka期间，深度25~30 cm时气候最为干旱，沉积了较粗的砂，为一强沙尘暴多发时期。Abstract: In this paper, the climatic and environmental evolution since past nearly 15 kaBP were revealed by the comprehensive analysis of grain size, magnetic susceptibility and chrominance from lacustrine deposits in the Shejialiang Lake Area, central Ordos Plateau. It's revealed that during 14.3~11.9 kaBP, at depth of 235~205 cm, depositional environment are dry and cold relatively. 11.9~4.0 kaBP, at depth of 205~85 cm, sediment proxies reflect that abundant rainfall, enlarging lake, and the lake has developed into a stable deep-water condition, wetter climate possibly due to increase monsoon activity. 4.0~0 kaBP, at depth of 85~0 cm, showed that the climatic characteristics were fluctuated by a large margin, that was period of alternate cool dry and warm wet, and the water level of Shejialiang Lake has been fluctuate. That frequency and intensity of sandstorms have strengthened, Including of 1.2~1.4 kaBP, at depth of 25~30 cm, It was one of the driest period, the strong dust storm are frequent, and that deposited coarse sandy layer.
-
Key words:
- lacustrine deposits /
- environmental evolution /
- Ordos Plateau
-
图 2 折家梁剖面岩性柱与磁化率曲线图
Figure 2. Stratigraphic column and magnetic susceptibility curves of the Shejialiang section
图 4 折家梁剖面粒度参数随深度变化曲线
Figure 4. The distribution curve of grain size parameters varies with depths in the Shejialiang section
图 5 折家梁剖面色度指标随深度变化曲线
Figure 5. The distribution curves of chrominance varies with depths in the Shejialiang section
图 6 环境代指标变化曲线与演化阶段
Figure 6. Curves of environmental proxies of the Shejialiang section and evolutionary stages
表 1 折家梁剖面14C年代测试结果
Table 1. The results of 14C dating in the Shejialiang section
样品编号 距地表深度/cm 距今时间/a DS14C-4 40 现代 DS14C-3 55 现代 DS14C-2 135 6329±120 DS14C-1 215 12752±270 注：样品经中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室测定 
下载: 导出CSV
-
[1] 杨志荣, 张梅青.鄂尔多斯泊江海子地区800余年来的气候与环境变化[J].湖南师范大学自然科学学报, 1997, 20(4):74~81. http://www.cnki.com.cn/Article/CJFDTOTAL-HNSZ704.014.htmYANG Zhi-rong, ZHANG Mei-qing. Climatic and environmental changes since 800 aBP in Pojianghaizi Lake area, Ordos Plateau[J]. Journal of Natural Science of Hunan Normal University, 1997, 20(4): 74~81. http://www.cnki.com.cn/Article/CJFDTOTAL-HNSZ704.014.htm [2] 董光荣, 靳鹤龄, 陈惠忠.末次间冰期以来沙漠-黄土边界带移动与气候变化[J].第四纪研究, 1997, (2):158~167. http://www.cnki.com.cn/Article/CJFDTOTAL-DSJJ702.007.htmDONG Guang-rong, JIN He-ling, CHEN Hui-zhong. Desert-loess boundary belt shift and climatic change since the last interglacial period[J]. Quaternary Sciences, 1997, (2): 158~167. http://www.cnki.com.cn/Article/CJFDTOTAL-DSJJ702.007.htm [3] Bernasconi S, Dobson J, Mckenzie J A, 等.东北亚的新仙女木和全新世气候演变的初步证据:一个湖泊岩心的古环境变化的同位素和磁性记录[J].化工矿产地质, 1998, 20(3):233~240. http://www.cnki.com.cn/Article/CJFDTOTAL-HGKC803.006.htmBernasconi S, Dobson J, Mckenzie J A, et al. Isotopic and magnetic record of paleoenvironmental changes in an Inner Mongolian lake core: Preliminary evidence for the Younger Dryas and Holocene climate evolution in Northeast Asia[J]. Geology of Chemical Minerals, 1998, 20(3): 233~240. http://www.cnki.com.cn/Article/CJFDTOTAL-HGKC803.006.htm [4] Sun J M, Ding Z L. Deposits and soils of the past 130, 000 years at the desert-loess transition in northern China[J]. Quaternary Research, 1998, 50(2): 148~156. doi: 10.1006/qres.1998.1989 [5] Sun J M, Ding Z L, Liu T S, et al. 580, 000-year environmental re-construction from Aeolian deposits at the Mu Us Desert margin, China[J]. Quaternary Science Reviews, 1999, 18(12): 1351~1364. doi: 10.1016/S0277-3791(98)00086-9 [6] 周杰, 周卫健, 陈惠忠, 等.新仙女木时期东亚夏季风降水不稳定的记录[J].科学通报, 1999, 44(2):205~208. http://www.cnki.com.cn/Article/CJFDTOTAL-KXTB199902020.htmZHOU Jie, ZHOU Wei-jian, CHEN Hui-zhong, et al. Evidence for Asian summer monsoon precipitation instability of the Younger Dryas Phase[J]. Chinese Science Bulletin, 1999, 44(9): 849~852. http://www.cnki.com.cn/Article/CJFDTOTAL-KXTB199902020.htm [7] 田孝先.鄂尔多斯盆地浩勒报吉淖全新世盐湖特征[J].地质力学学报, 2000, 6(1):84~89. http://journal.geomech.ac.cn/ch/reader/view_abstract.aspx?file_no=20000112&flag=1TIAN Xiao-xian. Studies on the features of the Holbaojinao Quarternary salt lake in mid-north Ordos Basin[J]. Journal of Geomechanics, 2000, 6(1): 84~89. http://journal.geomech.ac.cn/ch/reader/view_abstract.aspx?file_no=20000112&flag=1 [8] Zhou W J, Dodson J, Head M J, et al. Environmental variability within the Chinese desert-loess transition zone over the last 20000 years [J]. Holocene, 2002, 12(1): 117~122. doi: 10.1191/0959683602hl525rr [9] 许清海, 孔昭宸, 陈旭东, 等.鄂尔多斯东部4000余年来的环境与人地关系的初步探讨[J].第四纪研究, 2002, 22(2):105~112. http://www.cnki.com.cn/Article/CJFDTOTAL-DSJJ200202001.htmXU Qing-hai, KONG Zhao-chen, CHEN Xu-dong, et al. Changes and the effects of human impacts in the east Ordos plateau since 4000 aBP[J]. Quaternary Sciences, 2002, 22(2): 105~112. http://www.cnki.com.cn/Article/CJFDTOTAL-DSJJ200202001.htm [10] 汪勇, 羊向东, 沈吉, 等.陕西红碱淖近百年来环境变化的湖泊沉积记录[J].湖泊科学, 2004, 16(2):105~112. http://www.cnki.com.cn/Article/CJFDTOTAL-FLKX200402001.htmWANG Yong, YANG Xiang-dong, SHEN Ji, et al. A 0.1 ka-year record of environmental evolution in Hongjiannao Lake, Shaanxi Province[J]. Journal of Lake Sciences, 2004, 16(2): 105~112. http://www.cnki.com.cn/Article/CJFDTOTAL-FLKX200402001.htm [11] 肖霞云, 羊向东, 沈吉, 等.陕西红碱淖近百年来的孢粉记录及环境变化[J].湖泊科学, 2005, 17(l):28~34. http://www.cnki.com.cn/Article/CJFDTOTAL-FLKX200501006.htmXIAO Xia-yun, YANG Xiang-dong, SHEN Ji, et al. Sporopollen record and environmental evolution since ~100 years in Lake Hongjiannao, Shaanxi Province [J]. Journal of Lake Sciences, 2005, 17(l): 28~34. http://www.cnki.com.cn/Article/CJFDTOTAL-FLKX200501006.htm [12] 汪勇, 沈吉, 羊向东, 等.陕北红碱淖沉积物粒度特征所揭示的环境变化[J].沉积学报, 2006, 24(3):349~355. http://www.cnki.com.cn/Article/CJFDTOTAL-CJXB200603004.htmWANG Yong, SHEN Ji, YANG Xiang-dong, et al. Environmental changes deduced from grain-size characteristics of the sediments from Hongjiannao Lake, Shaanxi Province [J]. Acta Sedimentologica Sinica, 2006, 24(3): 349~355. http://www.cnki.com.cn/Article/CJFDTOTAL-CJXB200603004.htm [13] 隆浩, 王乃昂, 李育, 等.毛乌素沙地北缘泊江海子剖面粒度特征及环境意义[J].中国沙漠, 2007, 27(2):187~193. http://www.cnki.com.cn/Article/CJFDTOTAL-ZGSS200702003.htmLONG Hao, WANG Nai-ang, LI Yu, et al. Particle size characteristics of deposits from PJHZ section in northern edge of Mu Us desert and their environmental significance[J]. Journal of Desert Research, 2007, 27(2): 187~193. http://www.cnki.com.cn/Article/CJFDTOTAL-ZGSS200702003.htm [14] 黄昌庆, 冯兆东, 马玉贞, 等.巴汗淖孢粉记录的全新世环境变化[J].兰州大学学报:自然科学版, 2009, 45(4):7~12. http://www.cnki.com.cn/Article/CJFDTOTAL-LDZK200904005.htmHUANG Chang-qing, FENG Zhao-dong, MA Yu-zhen, et al. Holocene palaeoenvironment changes recorded by pollen of Baahar Nuur Lake[J]. Journal of Lanzhou University: Natural Sciences, 2009, 45(4): 7~12. http://www.cnki.com.cn/Article/CJFDTOTAL-LDZK200904005.htm [15] Heller F, Liu T S. Magnetostratigraphical dating of loess deposits in China[J]. Nature, 1982, 300: 431~433. doi: 10.1038/300431a0 [16] 刘秀铭, 刘东生, Shaw J.中国黄土磁性矿物特征及其古气候意义[J].第四纪研究, 1993, (3):281~287. http://www.cnki.com.cn/Article/CJFDTOTAL-DSJJ199303009.htmLIU Xiu-ming, LIU Dong-sheng, Shaw J. Magnetic mineral characteristics of Chinese loess and its palaeoclimatic significance[J]. Quaternary Sciences, 1993, (3): 281~287. http://www.cnki.com.cn/Article/CJFDTOTAL-DSJJ199303009.htm [17] 王建, 刘泽纯, 姜文英, 等.磁化率与粒度、矿物的关系及其古环境意义[J].地理学报, 1996, 51(2):155~163. http://www.cnki.com.cn/Article/CJFDTOTAL-DLXB602.008.htmWANG Jian, LIU Ze-chun, JIANG Wen-ying, et al. A relationship between susceptibility and grain-size and minerals, and their paleo-environmental implications [J]. Acta Geographica Sinica, 1996, 51 (2): 155~163. http://www.cnki.com.cn/Article/CJFDTOTAL-DLXB602.008.htm [18] 蒋雪中, 王苏民, 羊向东.云南鹤庆盆地HQ孔沉积特征与古环境变迁[J].地质力学学报, 1998, 4(4):77~81. http://journal.geomech.ac.cn/ch/reader/view_abstract.aspx?file_no=19980450&flag=1JIANG Xue-zhong, WANG Su-min, YANG Xiang-dong. Sedimentary characteristics and climatic evolution of core HQ in Heqing Basin, Yunnan Province[J]. Journal of Geomechanics, 1998, 4(4): 77~81. http://journal.geomech.ac.cn/ch/reader/view_abstract.aspx?file_no=19980450&flag=1 [19] 范淑贤, 赵景波, 吴锡浩, 等.秦岭太白盆地晚更新世晚期环境变迁[J].地质力学学报, 1997, 3(4):46~51. http://journal.geomech.ac.cn/ch/reader/view_abstract.aspx?file_no=19970446&flag=1FAN Shu-xian, ZHAO Jing-bo, WU Xi-hao, et al. Environment changes during the close of Pleistocene in the Taibai Basin in the Qinling Mountain[J]. Journal of Geomechanics, 1997, 3(4): 46~51. http://journal.geomech.ac.cn/ch/reader/view_abstract.aspx?file_no=19970446&flag=1 [20] 吴艳宏, 李世杰.湖泊沉积物色度在短尺度古气候研究中的应用[J].地球科学进展, 2004, 19(5):789~792. http://www.cnki.com.cn/Article/CJFDTOTAL-DXJZ200405016.htmWU Yan-hong, LI Shi-jie. Significance of lake sediment color for short time scale climate variation[J]. Advances in Earth Science, 2004, 19(5): 789~792. http://www.cnki.com.cn/Article/CJFDTOTAL-DXJZ200405016.htm [21] 杨石岭, 丁仲礼, 秦小光, 等.黄土沉积中红光/反射光亮度值变化及古气候意义[J].第四纪研究, 1999, (4):380. http://www.cnki.com.cn/Article/CJFDTOTAL-DSJJ199904010.htmYANG Shi-ling, DING Zhong-li, QIN Xiao-guang, et al. Variation of red light/reflection lightness of loess deposit and its paleoclimatic implication[J]. Quaternary Sciences, 1999, (4): 380. http://www.cnki.com.cn/Article/CJFDTOTAL-DSJJ199904010.htm [22] 吴健, 沈吉.兴凯湖沉积物磁化率和色度反映的28 kaBP以来区域古气候环境演化[J].海洋地质与第四纪地质, 2009, 29(3):123~131. http://www.cnki.com.cn/Article/CJFDTOTAL-HYDZ200903022.htmWU Jian, SHEN Ji. Paleoenvironmental and paleoclimatic changes reflected by diffuse reflectance spectroscopy and magnetic susceptibility from Xingkai Lake sediments[J]. Marine Geology & Quaternary Geology, 2009, 29(3): 123~131. http://www.cnki.com.cn/Article/CJFDTOTAL-HYDZ200903022.htm [23] 罗超, 杨东, 彭子成, 等.新疆罗布泊地区近3.2万年沉积物的气候环境记录[J].第四纪研究, 2007, 27(1):114~121. http://www.cnki.com.cn/Article/CJFDTOTAL-DSJJ200701013.htmLUO Chao, YANG Dong, PENG Zi-cheng, et al. Climatic and environmental records in the sediment of the Luobei Billabong in Lop-Nur, Xinjiang in recent 32ka[J]. Quaternary Sciences, 2007, 27(1): 114~121. http://www.cnki.com.cn/Article/CJFDTOTAL-DSJJ200701013.htm -
下载:
图(6) / 表(1)
计量
- 文章访问数: 211
- HTML全文浏览量: 124
- PDF下载量: 13
- 被引次数: 0
