Study on Loess-Weathering Paleosol Sequence and Paleoclmate Evolution in QFC Profile in Yunxian, China

ZHAO Yan-lei; PANG Jiang-li; HUANG Chun-chang; ZHA Xiao-chun; QIAO Jing

Article Contents

Article Navigation > Acta Sedimentologica Sinica > 2014 > 32(5): 840-845

ZHAO Yan-lei, PANG Jiang-li, HUANG Chun-chang, ZHA Xiao-chun, QIAO Jing. Study on Loess-Weathering Paleosol Sequence and Paleoclmate Evolution in QFC Profile in Yunxian, China[J]. Acta Sedimentologica Sinica, 2014, 32(5): 840-845.

Citation:

Study on Loess-Weathering Paleosol Sequence and Paleoclmate Evolution in QFC Profile in Yunxian, China

College of Tourism and Environmental Sciences, Shaanxi Normal University, Xi'an 710119

Received Date: 2013-06-06
Rev Recd Date: 2014-04-17
Publish Date: 2014-10-10

Abstract

Qinling Mountains as a natural boundary of South-North of China geography, climate, natural environment, and as the Loess Plateau of South barrier. The upper reaches of Hanjiang River valley area is located in the south of Qinling Mountains, belonging to the northern tropical climate. Through the upper reaches of Hanjiang QFC profile susceptibility, loss on the ignition, particle size, Rb/Sr and other physicochemical properties were studied. The results showed that: (1) since the last glacial dust storms may well crossed the Qinling Mountains in the south of accumulation, Loess-Paleosol sequence stratigraphic sequence from top to bottom: MS-L₀-S₀-Lt-L₁-AD; these sediments records recorded a complete terraces of the late Pleistocene climate change information, stratigraphic units by various periods of different periods of different degree of intensity of soil information. (2) Physical and chemical properties were significantly at different stratigraphic units of QFC profile. Such as magnetic susceptibility, LOI, high value of Rb/Sr index average content appear in paleosols, the lower value in the loess layer, and the change of the content of Zr/Rb is just the opposite; these physicochemical properties suggest that the development of paleosol period, hydrothermal conditions into the most suitable period, sediment weathering pedogenesis significantly; in the stage of loess accumulation,cold and dry climate, mainly by the dust deposition, sediment weathering pedogenesis weaker. (3) Qinling Mountains South North Asia tropical upper reaches of Hanjiang River Front terrace profile of chemical weathering intensity change reveals the loess paleosol climate changes: since the last glacial period (about 18～11.5 ka B.P.), climate is dry, frequent sandstorms, sediment in the loess accumulation, pedogenesis weak, forming a typical loess (L₁); the early Holocene (about 11.5 ~8.5 ka B.P.), climate change from dry and cold to warm and humid direction, but mainly in the dry and cold, to form a transition layer (Lt); in the Holocene warm period (8.5 ~3.1 Ka B.P.), climate conditions to achieve the optimal stage, with good heat water, biological activity active, pedogenesis is very significant, development of ancient soil S₀; Since the late Holocene (3.1 Ka B.P.), climate change from warm humid to cold direction, pedogenesis significantly weakened, sand storms appear more frequently, formed in loess deposits of Holocene loess based (L₀). Modern surface layer (MS) in(1.5 Ka B.P.), since the climate warming, and our long-term agricultural tillage disturbance, formed in the Holocene Loess L₀ top stack.
- Upper reaches of Hanjiang valley,
- loess-paleosol sequence,
- pedogentic transformation,
- paleoclimate,

References

[1]	刘东生. 黄土与环境[M]. 北京:科学出版社, 1985:1-481[Liu Tungsheng. Loess and Environment[M]. Beijing: Science Press, 1985: 1-481]
[2]	丁仲礼, 刘东生. 1.8Ma以来黄土—深海古气候记录对比[J]. 科学通报, 1991(18):1401-1403[Ding Zhongli, Liu Tungsheng. Loess since 1.8Ma-deep contrast paleoclimate records[J]. Chinese Science Bulletin, 1991(18): 1401-1403]
[3]	雷祥义. 秦岭黄土—古土壤发育时的植被和环境[J]. 海洋地质与第四纪地质, 2002, 20(1):4-79[Lei Xiangyi. Vegetation and environment during period of Loess-Palesol development in the Qinling Mountains[J]. Marine Geology and Quaternary Geology, 2000, 20(1): 73-79]
[4]	庞奖励, 黄春长, 查小春. 汉江上游郧县一级阶地发育土壤的诊断层特征及分类[J]. 土壤学报, 2013, 50(6):1082-1089[Pang Jiangli, Huang Chunchang, Zha Xiaochun, et al. Soil diagnostic horizon characteristics and its significance in the upper Hanjing valley, China[J]. Acta Pedologica Sinica, 2013, 50(6): 1082-1089]
[5]	黄培华, 李文森. 湖北郧县曲远河口的地貌、第四纪地层和埋藏环境[J]. 汉江考古, 1995(4):3-86[Huang Peihua, Li Wensen. Hubei Yunxian estuarine geomorphology, Quaternary strata and buried environment[J]. Hanjiang Archaeologica, 1995(4): 3-86]
[6]	龚子同. 中国土壤系统分类[M]. 北京:科学出版社, 1999[Gong Zitong. Chinese Soil Taxonomy[M]. Beijing: Science Press, 1999]
[7]	庞奖励, 黄春长, 贾耀峰. 关中东部地区全新世土壤发育及记录的水文事件[J]. 土壤学报, 2005, 42(2):187-193[Pang Jiangli, Huang Chunchang, Jia Yaofeng. Hydrological events recorder in the Holocene soil in Guanzhong area, China[J]. Acta Pedologica Sinica, 2005, 42(2): 187-193]
[8]	鹿化煜, 安芷生. 黄土高原红粘土与黄土—古土壤粒度特征对比—红粘土风成成因的新证据[J]. 沉积学报, 1999, 17(2):226-232[Lu Huayu, Au Zhisheng. Comparison of grain-size distribution of red clay and loess-paleosol deposits in Chinese Loess Plateau[J]. Acta Sedimentologica Sinca, 1999, 17(2): 226-232]
[9]	李徐生, 韩志勇, 杨守业, 等. 镇江下蜀土剖面的化学风化强度与元素迁移特征[J]. 地理学报, 2007, 62(11):1174-1184[Li Xusheng, Han Zhiyong, Yang Shouye, et al. Chemical weathering intensity and element migration features of the Xiashu Loess Profile in Zhenjiang[J]. Acta Geographica Sinica, 2007, 62(11): 1174-1184]
[10]	Huang C C, Pang J L, Zha X C, et al. Extraordinary hydro-climatic events during the period AD 200-300 recorded by slackwater deposits in the upper Hanjiang River valley, China[J]. Palaeogeography, Palaeoclimatology, Palaeoecology, 2013, 374: 274-283
[11]	庞奖励, 黄春长, 查小春, 等. 汉江上游谷地全新世风成黄土及其成壤改造特征[J]. 地理学报, 2011, 66(11):1562-1573[Pang Jiangli, Huang Chunchang, Zha Xiaochun, et al. Holocene aeolian loess and its pedogenic modification in the Upper Hanjing River Valley, China[J]. Acta Geographica Sinica, 2011, 66(11): 1562-1573]
[12]	黄春长. 渭河流域3100年前资源退化与人类关系演变[J]. 地理科学, 2001, 21(1):30-35[Huang Chunchang. The deterioration of land resources the change in human-earth relationship in the Weihe River Basin at 3100a B.P.[J]. Scientia Geographica Sinica, 2001, 21(1): 30-35]
[13]	王恒松, 黄春长, 周亚利, 等. 关中西部千河流域全新世古洪水事件光释光测年研究[J]. 中国科学(D辑):地球科学, 2012, 42(3):390-401[Wang Hengsong, Huang Chunchang, Zhou Yali, et al. OSL dating of the Holocene paleoflood events on the Qianhe River in the Guanzhong Basin, China[J]. Science China(Seri. D): Earth Science, 2012, 42(3): 390-401]
[14]	Huang C C, Jia Y F, Pang J L. Holocene colluviation and its implications for tracing human-induced soil erosion and redeposition on the piedmont loess lands of the Qinling Mountaions, northern China[J]. Geoderma, 2006, 136: 838-851
[15]	黄春长, 庞奖励, 陈宝群, 等. 渭河流域先周—西周时代环境和水土资源退化及其社会影响[J]. 第四纪研究, 2003, 23(4):404-414[Huang Chunchang, Pang Jiangli, Chen Baoqun, et al. Land degradation and its social impact on the Weihe River drainage Basin during the predynastic Zhou-Western Zhou dynasty[J]. Quaternary Sciences, 2003, 23(4): 404-414]
[16]	刘秀铭, 夏敦胜, 刘东生, 等. 中国黄土和阿拉斯加黄土磁化率气候记录的两种模式探讨[J]. 第四纪研究, 2007, 27(2):210-220[Liu Xiuming, Xia Dunsheng, Liu Tungsheng, et al. Discussion on two models of Paleoclimatic records magnetic susceptibility of Alaskan and Chinese Loess[J]. Quaternary Sciences, 2007, 27(2): 210-220]
[17]	刘秀铭, 刘东生, Heller F, 等. 中国黄土磁化率与第四纪古气候研究[J]. 地质科学, 1992, 12(增刊):255-279[Liu Xiuming, Liu Tungsheng, Heller F, et al. study on magnetic susceptibility of Loess and Quaternary climate in China[J]. Scientia Geologica Sinica, 1992, 12(Suppl.): 255-279]
[18]	刘秀铭, 刘东生, John Shaw. 中国黄土磁性矿物特征及其古气候意义[J]. 第四纪研究, 1993, 1(3):281-287[Liu Xiuming, Liu Tungsheng, John Shaw. Magnetic mineral characteristics of Chinese loess and its palaeoclimatic significance[J]. Quaternary Sciences, 1993, 1(3): 281-287]
[19]	张振克, 吴瑞金, 王苏民. 贷海湖泊沉积物频率磁化率对历史时期环境变化的反映[J]. 地理研究, 1998, 17(3):297-302[Zhang Zhenke, Wu Ruijin, Wang Sumin. Implication of magnetic frequency dependent susceptibility on environmental variation from lacustrine sediment in Daihai Lake[J]. Geographical Research, 1998, 17(3): 297-302]
[20]	彭先芝, 贾蓉芬. 西峰与段家坡黄土剖面中有机质的特征及古环境信息[J]. 地理科学, 2001(1):36-40[Peng Xianzhi, Jia Rongfen. Distribution of organic matter in Xifeng and Duanjiapo Loess Section and the paleo-environment significance[J]. Scientia Geographica Sinica, 2001(1): 36-40]
[21]	石建省, 石迎春, 叶浩, 等. 黄土堆积序列高温烧失量指标对古气候演化的指示意义[J]. 地理科学与国土研究, 2002(4):104-106[Shi Jiansheng, Shi Yingchun, Ye Hao, et al. Indication significance of "High-temperature Loess on Ignition" in Loess accumulation sequence to palseoclimate evolution[J]. Geography and Territorial Research, 2002(4): 104-106]
[22]	黄润, 朱诚, 王升堂. 天堂寨泥炭地层的磁化率、Rb/Sr值及其反映的古气候意义[J]. 地理科学, 2007, 27(3):386-388[Huang Run, Zhu Cheng, Wang Shengtang. Magnetic susceptibility and Rb/Sr ratio of peat stratum in Tiantangzhai and its significance of palaeoclimate[J]. Scientia Geographica Sinica, 2007, 27(3): 386-388]
[23]	陈骏, 汪永进, 陈旸, 等. 中国黄土地层Rb和Sr地球化学特征及其古季风气候意义[J]. 地质学报, 2001, 75(2):259-266[Chen Jun, Wang Yongjin, Chen Yang, et al. Rb and Sr geochemical characterization of the Chinese Loess and its implications for palaeomonsoon climate[J]. Acta Geologica Sinica, 2001, 75(2): 259-266]
[24]	Gallet S, Jahn B M, Tori M. Geochemical characterization of the Luochuan Loess-paleosol sequence, China, and paleoclimatic implications[J]. Chemical Geology, 1996, 133: 67-88
[25]	田均良, 彭祥林, 等. 黄土高原土壤地球化学[M]. 北京:科学出版社, 1983:110-165[Tian Junliang, Peng Xianglin, et al. Soil Geochemistry of Loess Plateau[M]. Beijing: Science Press, 1983: 110-165]

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Study on Loess-Weathering Paleosol Sequence and Paleoclmate Evolution in QFC Profile in Yunxian, China

College of Tourism and Environmental Sciences, Shaanxi Normal University, Xi'an 710119

Received Date: 2013-06-06

Rev Recd Date: 2014-04-17

Publish Date: 2014-10-10

Key words:

Abstract: Qinling Mountains as a natural boundary of South-North of China geography, climate, natural environment, and as the Loess Plateau of South barrier. The upper reaches of Hanjiang River valley area is located in the south of Qinling Mountains, belonging to the northern tropical climate. Through the upper reaches of Hanjiang QFC profile susceptibility, loss on the ignition, particle size, Rb/Sr and other physicochemical properties were studied. The results showed that: (1) since the last glacial dust storms may well crossed the Qinling Mountains in the south of accumulation, Loess-Paleosol sequence stratigraphic sequence from top to bottom: MS-L₀-S₀-Lt-L₁-AD; these sediments records recorded a complete terraces of the late Pleistocene climate change information, stratigraphic units by various periods of different periods of different degree of intensity of soil information. (2) Physical and chemical properties were significantly at different stratigraphic units of QFC profile. Such as magnetic susceptibility, LOI, high value of Rb/Sr index average content appear in paleosols, the lower value in the loess layer, and the change of the content of Zr/Rb is just the opposite; these physicochemical properties suggest that the development of paleosol period, hydrothermal conditions into the most suitable period, sediment weathering pedogenesis significantly; in the stage of loess accumulation,cold and dry climate, mainly by the dust deposition, sediment weathering pedogenesis weaker. (3) Qinling Mountains South North Asia tropical upper reaches of Hanjiang River Front terrace profile of chemical weathering intensity change reveals the loess paleosol climate changes: since the last glacial period (about 18～11.5 ka B.P.), climate is dry, frequent sandstorms, sediment in the loess accumulation, pedogenesis weak, forming a typical loess (L₁); the early Holocene (about 11.5 ~8.5 ka B.P.), climate change from dry and cold to warm and humid direction, but mainly in the dry and cold, to form a transition layer (Lt); in the Holocene warm period (8.5 ~3.1 Ka B.P.), climate conditions to achieve the optimal stage, with good heat water, biological activity active, pedogenesis is very significant, development of ancient soil S₀; Since the late Holocene (3.1 Ka B.P.), climate change from warm humid to cold direction, pedogenesis significantly weakened, sand storms appear more frequently, formed in loess deposits of Holocene loess based (L₀). Modern surface layer (MS) in(1.5 Ka B.P.), since the climate warming, and our long-term agricultural tillage disturbance, formed in the Holocene Loess L₀ top stack.

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Reference (25)

[1]	刘东生. 黄土与环境[M]. 北京:科学出版社, 1985:1-481[Liu Tungsheng. Loess and Environment[M]. Beijing: Science Press, 1985: 1-481]
[2]	丁仲礼, 刘东生. 1.8Ma以来黄土—深海古气候记录对比[J]. 科学通报, 1991(18):1401-1403[Ding Zhongli, Liu Tungsheng. Loess since 1.8Ma-deep contrast paleoclimate records[J]. Chinese Science Bulletin, 1991(18): 1401-1403]
[3]	雷祥义. 秦岭黄土—古土壤发育时的植被和环境[J]. 海洋地质与第四纪地质, 2002, 20(1):4-79[Lei Xiangyi. Vegetation and environment during period of Loess-Palesol development in the Qinling Mountains[J]. Marine Geology and Quaternary Geology, 2000, 20(1): 73-79]
[4]	庞奖励, 黄春长, 查小春. 汉江上游郧县一级阶地发育土壤的诊断层特征及分类[J]. 土壤学报, 2013, 50(6):1082-1089[Pang Jiangli, Huang Chunchang, Zha Xiaochun, et al. Soil diagnostic horizon characteristics and its significance in the upper Hanjing valley, China[J]. Acta Pedologica Sinica, 2013, 50(6): 1082-1089]
[5]	黄培华, 李文森. 湖北郧县曲远河口的地貌、第四纪地层和埋藏环境[J]. 汉江考古, 1995(4):3-86[Huang Peihua, Li Wensen. Hubei Yunxian estuarine geomorphology, Quaternary strata and buried environment[J]. Hanjiang Archaeologica, 1995(4): 3-86]
[6]	龚子同. 中国土壤系统分类[M]. 北京:科学出版社, 1999[Gong Zitong. Chinese Soil Taxonomy[M]. Beijing: Science Press, 1999]
[7]	庞奖励, 黄春长, 贾耀峰. 关中东部地区全新世土壤发育及记录的水文事件[J]. 土壤学报, 2005, 42(2):187-193[Pang Jiangli, Huang Chunchang, Jia Yaofeng. Hydrological events recorder in the Holocene soil in Guanzhong area, China[J]. Acta Pedologica Sinica, 2005, 42(2): 187-193]
[8]	鹿化煜, 安芷生. 黄土高原红粘土与黄土—古土壤粒度特征对比—红粘土风成成因的新证据[J]. 沉积学报, 1999, 17(2):226-232[Lu Huayu, Au Zhisheng. Comparison of grain-size distribution of red clay and loess-paleosol deposits in Chinese Loess Plateau[J]. Acta Sedimentologica Sinca, 1999, 17(2): 226-232]
[9]	李徐生, 韩志勇, 杨守业, 等. 镇江下蜀土剖面的化学风化强度与元素迁移特征[J]. 地理学报, 2007, 62(11):1174-1184[Li Xusheng, Han Zhiyong, Yang Shouye, et al. Chemical weathering intensity and element migration features of the Xiashu Loess Profile in Zhenjiang[J]. Acta Geographica Sinica, 2007, 62(11): 1174-1184]
[10]	Huang C C, Pang J L, Zha X C, et al. Extraordinary hydro-climatic events during the period AD 200-300 recorded by slackwater deposits in the upper Hanjiang River valley, China[J]. Palaeogeography, Palaeoclimatology, Palaeoecology, 2013, 374: 274-283
[11]	庞奖励, 黄春长, 查小春, 等. 汉江上游谷地全新世风成黄土及其成壤改造特征[J]. 地理学报, 2011, 66(11):1562-1573[Pang Jiangli, Huang Chunchang, Zha Xiaochun, et al. Holocene aeolian loess and its pedogenic modification in the Upper Hanjing River Valley, China[J]. Acta Geographica Sinica, 2011, 66(11): 1562-1573]
[12]	黄春长. 渭河流域3100年前资源退化与人类关系演变[J]. 地理科学, 2001, 21(1):30-35[Huang Chunchang. The deterioration of land resources the change in human-earth relationship in the Weihe River Basin at 3100a B.P.[J]. Scientia Geographica Sinica, 2001, 21(1): 30-35]
[13]	王恒松, 黄春长, 周亚利, 等. 关中西部千河流域全新世古洪水事件光释光测年研究[J]. 中国科学(D辑):地球科学, 2012, 42(3):390-401[Wang Hengsong, Huang Chunchang, Zhou Yali, et al. OSL dating of the Holocene paleoflood events on the Qianhe River in the Guanzhong Basin, China[J]. Science China(Seri. D): Earth Science, 2012, 42(3): 390-401]
[14]	Huang C C, Jia Y F, Pang J L. Holocene colluviation and its implications for tracing human-induced soil erosion and redeposition on the piedmont loess lands of the Qinling Mountaions, northern China[J]. Geoderma, 2006, 136: 838-851
[15]	黄春长, 庞奖励, 陈宝群, 等. 渭河流域先周—西周时代环境和水土资源退化及其社会影响[J]. 第四纪研究, 2003, 23(4):404-414[Huang Chunchang, Pang Jiangli, Chen Baoqun, et al. Land degradation and its social impact on the Weihe River drainage Basin during the predynastic Zhou-Western Zhou dynasty[J]. Quaternary Sciences, 2003, 23(4): 404-414]
[16]	刘秀铭, 夏敦胜, 刘东生, 等. 中国黄土和阿拉斯加黄土磁化率气候记录的两种模式探讨[J]. 第四纪研究, 2007, 27(2):210-220[Liu Xiuming, Xia Dunsheng, Liu Tungsheng, et al. Discussion on two models of Paleoclimatic records magnetic susceptibility of Alaskan and Chinese Loess[J]. Quaternary Sciences, 2007, 27(2): 210-220]
[17]	刘秀铭, 刘东生, Heller F, 等. 中国黄土磁化率与第四纪古气候研究[J]. 地质科学, 1992, 12(增刊):255-279[Liu Xiuming, Liu Tungsheng, Heller F, et al. study on magnetic susceptibility of Loess and Quaternary climate in China[J]. Scientia Geologica Sinica, 1992, 12(Suppl.): 255-279]
[18]	刘秀铭, 刘东生, John Shaw. 中国黄土磁性矿物特征及其古气候意义[J]. 第四纪研究, 1993, 1(3):281-287[Liu Xiuming, Liu Tungsheng, John Shaw. Magnetic mineral characteristics of Chinese loess and its palaeoclimatic significance[J]. Quaternary Sciences, 1993, 1(3): 281-287]
[19]	张振克, 吴瑞金, 王苏民. 贷海湖泊沉积物频率磁化率对历史时期环境变化的反映[J]. 地理研究, 1998, 17(3):297-302[Zhang Zhenke, Wu Ruijin, Wang Sumin. Implication of magnetic frequency dependent susceptibility on environmental variation from lacustrine sediment in Daihai Lake[J]. Geographical Research, 1998, 17(3): 297-302]
[20]	彭先芝, 贾蓉芬. 西峰与段家坡黄土剖面中有机质的特征及古环境信息[J]. 地理科学, 2001(1):36-40[Peng Xianzhi, Jia Rongfen. Distribution of organic matter in Xifeng and Duanjiapo Loess Section and the paleo-environment significance[J]. Scientia Geographica Sinica, 2001(1): 36-40]
[21]	石建省, 石迎春, 叶浩, 等. 黄土堆积序列高温烧失量指标对古气候演化的指示意义[J]. 地理科学与国土研究, 2002(4):104-106[Shi Jiansheng, Shi Yingchun, Ye Hao, et al. Indication significance of "High-temperature Loess on Ignition" in Loess accumulation sequence to palseoclimate evolution[J]. Geography and Territorial Research, 2002(4): 104-106]
[22]	黄润, 朱诚, 王升堂. 天堂寨泥炭地层的磁化率、Rb/Sr值及其反映的古气候意义[J]. 地理科学, 2007, 27(3):386-388[Huang Run, Zhu Cheng, Wang Shengtang. Magnetic susceptibility and Rb/Sr ratio of peat stratum in Tiantangzhai and its significance of palaeoclimate[J]. Scientia Geographica Sinica, 2007, 27(3): 386-388]
[23]	陈骏, 汪永进, 陈旸, 等. 中国黄土地层Rb和Sr地球化学特征及其古季风气候意义[J]. 地质学报, 2001, 75(2):259-266[Chen Jun, Wang Yongjin, Chen Yang, et al. Rb and Sr geochemical characterization of the Chinese Loess and its implications for palaeomonsoon climate[J]. Acta Geologica Sinica, 2001, 75(2): 259-266]
[24]	Gallet S, Jahn B M, Tori M. Geochemical characterization of the Luochuan Loess-paleosol sequence, China, and paleoclimatic implications[J]. Chemical Geology, 1996, 133: 67-88
[25]	田均良, 彭祥林, 等. 黄土高原土壤地球化学[M]. 北京:科学出版社, 1983:110-165[Tian Junliang, Peng Xianglin, et al. Soil Geochemistry of Loess Plateau[M]. Beijing: Science Press, 1983: 110-165]

Study on Loess-Weathering Paleosol Sequence and Paleoclmate Evolution in QFC Profile in Yunxian, China

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