Environmental Evolution Records of Biomakers from Lacustrine Deposits of oft-com:office:smarttags" />Xingyun Lake, Yunnan Provinceoft-com:office:office" />
详细信息   
摘要

///Using GC-MS analysis, a series of lipids, including n-alkanes, n-alkanoic acids and n-alcohols, have been identified. This paper focuses on n-alcohols in this core. The result shows that the distinct n-alcohols distributions in different depth. Four climate stages can be divided according to the records since about oft-com:office:smarttags" />130 a, i. e. cool period before 1920 ,warm period between 1920~1956 with the warmest period in 1940s’, cold period between 1957~1970s and warm period 1980s. Since 1993 Rl/h increase may record the eutrophic history of the lake. The carbon preference index (CPI) reveals the organic origin of the lake has some alternations. More attention must be paid to that the high effected by the euotrophic which may lead the the high Rl/h. The lipids are sensitive to the environment evolution. However, further and more detailed work should be done for better understanding the relationship between environment evolution and Lipid records. oft-com:office:office" />

© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号

地址:北京市海淀区学院路29号 邮编:100083

电话:办公室:(+86 10)66554848;文献借阅、咨询服务、科技查新:66554700