摘要
对采自西藏东南部的喜马拉雅冷杉和林芝云杉交叉定年后 ,进行了过去 1 0 0年的年轮δ13 C分析。结果表明 :冷杉和云杉年轮δ13 C序列记录了大气CO2 浓度升高引起大气CO2 的δ13 C下降的全球性趋势 ,但两者的响应程度不同。冷杉和云杉年轮δ13 C高频变化包含共同的气候环境变化信息 ,但在细节变化上存在差异。在对气候变化的响应上 ,两者记录的信息可以进行相互比较 ,以便利用不同地区不同树种的δ13 C进行大区域气候重建。
Stable carbon isotope ratios were measured on the α cellulose of Abies spectabibis and Likiangensisvar. linzhiensis in Nyingchi region after cross dating. The two δ 13 C series recorded the declining trend of δ 13 C due to the increasing concentration of CO 2 in the atmosphere, but with different response. With the detail differences, there are common climatic information in high frequencies of δ 13 C series. As to the response to climate change, the climatic information recorded in δ 13 C series can be compared with each other.
出处
《盐湖研究》
CSCD
2003年第2期29-34,共6页
Journal of Salt Lake Research
基金
国家自然科学基金资助项目 (30 2 0 2 2 7)
