Reconstruction of palaeoecological and palaeoclimatic conditions of the Holocene in the south of the Taimyr according to an analysis of lake sediments

Reconstruction of palaeoecological and palaeoclimatic conditions of the Holocene in the south of the Taimyr according to an analysis of lake sediments
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根据湖泊沉积物分析重建泰米尔河南部全新世古生态和古气候条件

DOI:
10.1134/s1995425517040114
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发表时间:
2017
影响因子:
0.8
通讯作者:
I. Grekov
I. Grekov
中科院分区:
环境科学与生态学4区
文献类型:
--
作者:
L. Syrykh;L. Syrykh;Larisa B Nazarova;Larisa B Nazarova;U. Herzschuh;Dmitry A Subetto;Dmitry A Subetto;I. Grekov

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对来自 Khatanga-12 湖(克拉斯诺亚尔斯克边疆区泰米尔半岛)的沉积岩芯进行了研究。 131.5 厘米长的核心覆盖约。 7100年的沉淀。使用俄罗斯北部摇蚊推断的七月平均温度模型进行了摇蚊分析、该地区古环境的定性重建以及七月平均气温和湖泊水深变化的定量重建(Nazarova 等,2008、2011、2015)。 Khatanga-12 湖是在全新世中期变暖期间由于热岩溶过程而形成的。湖泊生态系统在不同发展阶段的发展受到气候和冰石成因因素的影响。全新世中期变暖,发生在 7100-6250 cal 左右。 BP年,激活了热岩溶过程并导致了湖盆的形成。后来,在 6250 到 4500 cal 之间。 BP年发生了一段冷却期,摇蚊分析证明了这一点。这一时期的湖底沉积物是由湖岸的侵蚀过程形成的。重建的条件接近2500年后的现代。年英国石油公司。
A sediment core from Khatanga-12 Lake (Taimyr Peninsula, Krasnoyarsk krai) has been studied. The 131.5-cm-long core covers ca. 7100 years of sedimentation. Chironomid analysis, a qualitative reconstruction of the paleoenvironment in the region, and a quantitative reconstruction of variations of the mean July air temperature and in the water depth of the lake have been performed using Northern Russia chironomid-inferred mean July temperature models (Nazarova et al., 2008, 2011, 2015). Khatanga-12 Lake was formed during the Middle Holocene warming as a result of thermokarst processes. The development of the lake ecosystem at different stages of its development was influenced by climatic and cryolithogenic factors. The Middle Holocene warming, which occurred around 7100–6250 cal. years BP, activated thermokarst processes and resulted in the formation of the lake basin. Later, between 6250 and 4500 cal. years BP, a period of cooling took place, as is proved by chironomid analysis. The bottom sediments of the lake during this period were formed by erosion processes on the lake shores. The reconstructed conditions were close to the modern after 2500 cal. years BP.
DOI: 10.1016/j.gloplacha.2014.11.015
发表时间: 2015-11
影响因子: 3.9
作者:
L. Nazarova;A. Self;S. Brooks;M. Hardenbroek;U. Herzschuh;B. Diekmann
通讯作者: L. Nazarova;A. Self;S. Brooks;M. Hardenbroek;U. Herzschuh;B. Diekmann
DOI: 10.1134/s199542551301006x
发表时间: 2013
影响因子: 0.8
作者:
Frolova;Nazaroa;Pestryakova;Herzschuh
通讯作者: Herzschuh