湖泊自生碳酸盐碳同位素在环境变化中的应用

Carbon Isotopic Records from Lacustrine Authigenic Carbonates as Environmental Change Indicators

湖泊自生碳酸盐碳同位素组成(δ13Cc)在区域气候与环境变化方面的应用研究近年来进展迅速,成果显著,保存在各类湖泊沉积物柱芯中的δ13Cc记录揭示了湖表水体与大气CO2的交换程度、暖季降水量的多少、流域C3和C4植被变化情况、水生生物光合作用或呼吸作用强弱、湖泊生产力大小、湖泊水体化学特征、湖水不同深度层的有机质变化过程等重要的气候和环境信息;对此进行归纳和述评。

Carbon isotopic records from lacustrine authigenic carbonates(δ13Cc) are valuable proxies indicating climatic and /or environmental change information including CO2 exchange between atmosphere and lake water,precipitation in warm season,vegetation development in the catchment dominated by C4 or C3 plants,photosynthesis /respiration of aquatic plants within the lake basin,lake productivity and chemical character of the lake water.In the paper,environmental explanation models,proposed by investigators in the ...