Paleoenvironmental Changes in the Eurasian Continental Interior during the Last 12 Million Years Derived from Organic Components in Sediment Cores (BDP-96 and BDP-98) from Lake Baikal
Paleoenvironmental Changes in the Eurasian Continental Interior during the Last 12 Million Years Derived from Organic Components in Sediment Cores (BDP-96 and BDP-98) from Lake Baikal
复制标题
过去 1200 万年欧亚大陆内部古环境变化源自贝加尔湖沉积物核心（BDP-96 和 BDP-98）中的有机成分
DOI：
10.1007/978-4-431-67859-5_5
复制
发表时间：
2003
影响因子：
3
通讯作者：
T. Kawai
中科院分区：
文献类型：
--
作者：
G. Matsumoto;C. Fujimura;K. Minoura;N. Takamatsu;T. Takemura;S. Hayashi;K. Shichi;T. Kawai
本文研究了西伯利亚中南部贝加尔湖院士岭BDP-96-1和-2 （200 m）和BDP-98-1和-2 （600 m）组合沉积物岩心（BDP-96和BDP-98）的有机成分，以阐明欧亚大陆内部和世界近1200万年（Myr）的生物生产、有机质来源和古环境变化。总有机碳（TOC）含量在0.13% ~ 2.8%之间，平均为0.93% (n = 7710)，较低，与部分低营养湖泊相似。由于全球气候变冷，TOC和总氮（TN）含量从12 Myr以前到现在减少了约一半。较高的生物生产周期主要归功于维管植物的贡献。
Organic components in combined sediment cores (BDP-96 and BDP-98) of BDP-96-1 and -2 (200 m) and BDP-98-1 and -2 (600 m) from Academician Ridge in Lake Baikal, in south-central Siberia, were studied to clarify the biological production, sources of organic matter, and paleoenvironmental changes during the last 12 million years (Myr) in the Eurasian continental interior as well as in the world. Total organic carbon (TOC) contents ranging from 0.13% to 2.8%, with an average of 0.93% (n = 7710), were fairly low, and were similar to those found in some oligotrophic lakes. TOC and total nitrogen (TN) contents had decreased by about half from 12 Myr ago to the present as a result of global climate cooling. Higher biological production periods are mainly attributed to the contribution of vascular plants.