浙江长兴中—晚更新世红土植硅体与分子化石记录及其环境意义

顾延生; 秦养民; 朱宗敏; 谢树成; 王志远; 张克信

浙江长兴中—晚更新世红土植硅体与分子化石记录及其环境意义

1 中国地质大学生物地质与环境地质教育部重点实验室, 武汉 430074;
2 中国地质大学生态环境研究所, 武汉 430074;
3 中国地质大学环境学院, 武汉 430074;
4 中国科学院广州地球化学研究所有机地球化学国家重点实验室, 广州 510640

基金项目:

国家自然科学基金项目(40502015、40232025、40525008)

详细信息

作者简介:
顾延生(1970-),男,博士,副教授,主要从事第四纪全球变化与生态响应研究

中图分类号: P532
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出版历程
- 收稿日期: 2006-07-18
- 修回日期: 2006-11-10

MID-LATE PLEISTOCENE PALAEOVEGETATION AND PALAEOCLIMATE CHANGE RECONSTRUCTED BY PHYTOLITH AND MOLECULAR FOSSIL RECORDS OF VERMICULAR RED EARTH IN CHANGXING, ZHEJIANG

1 Key Laboratory of Biogeology and Environmental Geology, Ministry of Education, China University of Geosciences, Wuhan 430074, China;
2 Institute of Ecology and Environment Studies, China University of Geosciences, Wuhan 430074, China;
3 School of Environmental Studies, China University of Geosciences, Wuhan 430074, China;
4 State Key Laboratory of Organic Geochemistry, Institute of Geochemistry, CAS, Guangzhou 510640, China

摘要

摘要: 在野外地貌、岩性和相关沉积环境调查分析基础上,对浙江长兴中-晚更新世红土进行了分析,发现其中含有较丰富的植硅体形态类型,主要来自草本、阔叶和裸子植物等,植硅体含量分布具有一定的组合特征。在温暖指数和草本覆盖指数计算基础上,获得了中-晚更新世以来的3个古植被、古气候演化组合带;运用植硅体和分子化石的相关指标(C₂₁^-/C₂₂⁺、C₂₃/C₃₀)揭示了洪积扇红土沉积时期的植被与气候信息,即间冰期气候暖湿,风化作用强,降水较多,高等草本植物繁盛;而冰期时气候干凉,风化作用弱,降水减少和地下水位降低等则有利于洪积扇体上木本类植被发育。
- 网纹红土 /
- 植硅体 /
- 分子化石 /
- 古气候 /
- 中—晚更新世 /
- 浙江长兴
Abstract: On the basis of geomorphology, lithology, dating and sedimentary environment survey on Quaternary red earth in the field, phytolith analyses show that red earth contains abundant phytolith morphotypes, mainly originating from grasses, broad-leaved and gymnosperm trees. Distribution patterns of phytolith percentage, warmth index and grass cover index demonstrate that there occur 3 assemblage zones in response to palaeo-vegetation and palaeo-climate changes in mid-late Pleistocene, respectively. Correlation of phytolith assemblages and relative indices (C₂₁^-/C₂₂⁺, C₂₃/C₃₀) of molecular fossils indicates that palaeo-vegetation and palaeo-climate are characterized by the alternation of glaciation (arid-cool, weak weathering) and interglaciation (warm-humid, strong weathering) during red earth deposition on an alluvial fan. Due to abundant rainfall and high level of underwater, grasses were common in the surface of alluvial fan during interglaciation.
- vermicular red earth /
- phytolith /
- molecular fossil /
- palaeo-climate /
- mid-late Pleistocene /
- Changxing of Zhejiang

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参考文献(22)

[1]	熊毅.由更新统沉积物的胶体矿物分析试论第四纪气候[J]. 地质学报,1952,32(1-2):26 -41.[XIONG Yi. Study on Quaternary climate based on colloid minerals in Pleistocene sediments[J]. Acta Geologica Sinica, 1952,32(1-2):26-41.]
[2]	李驭亚. 华南第四纪网状红土虫状白斑的成因探讨[J]. 地质论评,1965,23(2):144-145. [LI Yu-ya. On the origin of the white vermicular spots of the Quaternary reticulated red clay in South China[J]. Geological Review, 1965, 23(2):144-145.]
[3]	徐馨.长江中下游网纹层问题的讨论[C]//第四纪冰川与第四纪地质论文集.北京:地质出版社,1984:104-112.[XU Xin. Discussion on vermicular red earth distributed in the mid-lower reaches of the Yangtze River[C]//Papers Collection on Quaternary Glacier and Quaternary Geology (Series 1). Beijing:Geological Publishing House, 1984 :104-112.]
[4]	朱景郊. 网纹红土的成因及其研究意义[J]. 地理研究, 1988,7(4):12-20. [ZHU Jing-jiao. Study on genesis and significance of vermicular red earth[J]. Geographical Research, 1988, 7(4):12-20.]
[5]	席承藩. 论华南红色风化壳[J]. 第四纪研究,1991,11(1):1-8. [XI Cheng-fan. On the red weathering crusts of southern China[J]. Quaternary Sciences, 1991, 11(1):1-8.]
[6]	赵其国.我国红壤现代成土过程和发育年龄的初步研究[J].第四纪研究,1992,12(4):341-351. [ZHAO Qi-guo. A study on pedogenic process and its developing age of red soils in China[J]. Quaternary Sciences, 1992, 12(4):341-351.]
[7]	乔彦松,郭正堂,郝青振,等.皖南风尘堆积-土壤序列的磁性地层学研究及其古环境意义[J].科学通报,2003,48(13):1465-1469. [QIAO Yan-song, GUO Zheng-tang, HAO Qing-zhen, et al. Magnetostratigraphy and palaeoenvironmental significance of an eolian deposit-soil sequence in the southern Anhui Province[J]. Chinese Science Bulletin, 2003, 48(13):1465-1469.]
[8]	胡雪峰,程天凡,巫和昕.南方网纹红土是否可能存在多个"沉积-成土"过程的旋回?[J]. 科学通报,2003,48(9):969-975. [HU Xue-feng, CHENG Tian-fan,WU He-xin. Do multiple cycles of an eolian deposit-pedogenesis exist in the reticulate red clay sections in southern China?[J]. Chinese Science Bulletin, 2003, 48(9):969-975.]
[9]	朱照宇,王俊达,黄宝林,等.红土.黄土.全球变化[J].第四纪研究,1995,15(3):267-277. [ZHU Zhao-yu, WANG Jun-da, HUANG Bao-lin, et al. Red soils, loess and global change[J]. Quaternary Sciences, 1995, 15(3):267-277.]
[10]	赵其国,杨浩.中国南方红土与第四纪环境变迁的初步研究[J]. 第四纪研究,1995,15(2):107-116. [ZHAO Qi-guo, YANG Hao. A preliminary study on red earth and changes of Quaternary environment in South China[J]. Quaternary Sciences, 1995, 15(2):107-116.]
[11]	黄镇国,张伟强,陈俊鸿.中国红土与自然地带变迁[J].地理学报,1999,54(3):203-211. [HUANG Zhen-guo, ZHANG Wei-qiang, CHEN Jun-hong. The change of natural zones and the evolution of red earth in China[J]. Acta Geographica Sinica, 1999, 54(3):203-211.]
[12]	黄镇国,张伟强.中国红土期气候期构造期的耦合[J].地理学报,2000,55(2):200-208. [HUANG Zhen-guo, ZHANG Wei-qiang. Coupling relationship between the red earth evolution, climate change and tectonic movement in China[J]. Acta Geographica Sinica, 2000, 55(2):200-208.]
[13]	王伟铭,虞子冶,杨浩. 江西星子县第四纪红土层的植硅体和孢粉研究及意义[J]. 微体古生物学报,1997,14(1):41-48. [WANG Wei-ming, YU Zi-ye, YANG Hao. Study on phytoliths and palynomorphs from Quaternary red earth in Xingzi County, Jiangxi, and their significance[J]. Acta Micropalaeontologica Sinica, 1997, 14(1):41-48.]
[14]	李长安,顾延生.网纹红土中的植硅体组合及其环境意义的初步研究[J].地球科学,1997,22(2):195-198. [LI Chang-an, GU Yan-sheng. A preliminary study on phytolith assemblages and paleoenvironmental indications of vermicular red earth[J]. Earth Science, 1997, 22(2):195-198.]
[15]	熊尚发,丁仲礼,刘东生.南方红土网纹:古森林植物根系的土壤学证据[J]. 科学通报,2000,45(12):1317-1321. [XIONG Shang-fa, DING Zhong-li, LIU Tung-sheng. The worm-shaped veins in the red earth of South China-Pedological evidence for root traces of past forest[J]. Chinese Science Bulletin, 2000, 45(12):1317-1321.]
[16]	黄翡,熊尚发. 江西九江第四纪红土中的植物硅酸体及孢粉[J]. 微体古生物学报,2001,18(2):203-210. [HUANG Fei, XIONG Shang-fa. Phytolith and pollen records of Quaternary red earth in Jiujiang City, Jiangxi Province[J]. Acta Micropalaeontologica Sinica, 2001,18(2):203-210.]
[17]	王志远,喻建华,顾延生,等.浙江长兴更新世红土中的分子化石及其古环境意义[J].海洋地质与第四纪地质,2002,22(1):97-102. [WANG Zhi-yuan, YU Jian-hua, GU Yan-sheng, et al. Molecular fossils as indicators for palaeoenvironment from Quaternary red earth in Changxing, Zhejiang[J]. Marine Geology and Quaternary Geology, 2002,22(1):97-102.]
[18]	XIE Shu-cheng, LAI Xu-long, YI Yi, et al. Molecular fossils in a Pleistocene river terrace in southern China related to paleoclimate variation[J]. Organic Geochemistry, 2003, 34:789-797.
[19]	谢树成,易轶,刘育燕,等. 南方更新世网纹红土对全球气候变化的响应:分子化石记录[J].中国科学D辑,2003,33(5):411-417. [XIE Shu-cheng, YI Yi, LIU Yu-yan, et al. Molecular fossil records from Pleistocene vermicular red earth in response to global climate changes in South China[J]. Science in China (Series D), 2003, 33(5):411-417.]
[20]	梁斌,谢树成,顾延生,等. 安徽宣城更新世红土正构烷烃分布特征及其古植被意义[J]. 地球科学,2005,30(2):129-132. [LIANG Bin, XIE Shu-cheng, GU Yan-sheng, et al. Distribution of n-alkanes as indicative of palaeovegetation change in Pleistocene red earth in Xuancheng, Anhui[J]. Earth Science, 2005, 30(2):129-132.]
[21]	王永吉,吕厚远.植物硅酸体研究及应用[M]. 北京:海洋出版社,1993:10-70.[WANG Yong-ji, LÜ Hou-yuan. Phytolith Study and its Application[M]. Beijing:China Ocean Press, 1993 :10-70.]
[22]	王伟铭,刘金陵,周晓丹.南京直立人洞穴沉积的植硅体气候指数研究[J]. 科学通报,2003,48(11):1205-1208. [WANG Wei-ming, LIU Jin-ling, ZHOU Xiao-dan. Climate indexes of phytoliths from Homo erectus' cave deposits in Nanjing[J]. Chinese Science Bulletin, 2003, 48(11):1205-1208.]