青海湖意外湖花介(Limnocythere inopinata Bird)壳体稳定氧同位素组成对盐度的可能响应
青海湖意外湖花介(Limnocythere inopinata Bird)壳体稳定氧同位素组成对盐度的可能响应
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DOI：
10.18307/2012.0417
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
刘卫国
中科院分区：
文献类型：
--
作者：
李祥忠;刘卫国
介形虫壳体的氧同位素组成是古湖泊学研究的重要指标，但对介形虫壳体氧同位素分馏及其环境意义的研究还不够深入。表层沉积物和二氧化碳系统采集了青海湖不同地点的现有水体，对青海湖湖水和池介形虫（LimnocytherinopinataBird）壳体的氧同位素组成进行了研究。通过对青海湖表层沉积物中介形类壳体氧同位素分馏的研究，探讨了介形类壳体氧同位素分馏的环境意义。结果表明，青海湖介形类壳体氧同位素分馏主要受水同位素控制，介形类壳体与水之间的氧同位素分馏不仅受温度的影响，还可能受盐度的影响。介形类壳体氧同位素分馏因子与温度有关，介形类壳体氧同位素分馏因子与温度有关，介形类壳体氧同位素分馏因子与盐度有关，介形类壳体氧同位素分馏因子与温度有关，介形类壳体氧同位素分馏因子与盐度有关，介形类壳体氧同位素分馏因子与温度有关，介形类壳体氧同位素分馏因子与盐度有关，介形类壳体氧同位素分馏因子与温度有关，介形类壳体氧同位素分馏因子与盐度有关，介形类壳体氧同位素分馏因子与盐度有关青海湖介形类壳体和水体的氧同位素组成均随盐度的升高而富集，但青海湖介形类壳体和水体的氧同位素组成可用于指示青海湖盐度的变化，需要进一步研究.
The oxygen isotopic composition of ostracod shells has been used as a useful indicator in plaeolimnological research.But studies on the oxygen isotopic fractionation of ostracod shells and its environmental significance were still not enough.In this study,surface sediments and co-existing water were systematically collected at different sites in Lake Qinghai.The oxygen isotopic composition of lake water and ostracod shells of Limnocythere inopinata Bird selected from the surface sediments were measured to test the oxygen isotopic fractionation of ostracod shells and evaluate its environmental significance in Lake Qinghai.Our results show that the oxygen isotopic composition of L.inopinata is mainly controlled by the water isotope and the oxygen isotopic fractionation between ostracod shells and water is not only affected by temperature but also maybe by water salinity.The oxygen isotopic fractionation factor of ostracod shells reduces with increasing water salinity,eliminating the effect of temperatures.However,the oxygen isotopic compositions of both ostracod shells and water become enriched with increasing salinity in Lake Qinghai.The oxygen isotopic composition of L.inopinata may be used to indicate the variability of salinity in Lake Qinghai,and further works need to be done in future.
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DOI：
10.1016/0031-0182(91)90041-o
发表时间：
1991-05-01
影响因子：
3
作者：
LISTER, GS;KELTS, K;NIESSEN, F
通讯作者：
NIESSEN, F
DOI：
10.1016/s0031-0182(03)00633-3
发表时间：
2003-12
期刊：
Palaeogeography, Palaeoclimatology, Palaeoecology
影响因子：
--
作者：
S. Mulitza;D. Boltovskoy;B. Donner;H. Meggers;A. Paul;G. Wefer
通讯作者：
S. Mulitza;D. Boltovskoy;B. Donner;H. Meggers;A. Paul;G. Wefer
影响因子：
2.1
作者：
Xiangzhong Li;Weiguo Liu
通讯作者：
Xiangzhong Li;Weiguo Liu
影响因子：
2.6
作者：
Yu Yin;W. Geiger;K. Martens
通讯作者：
Yu Yin;W. Geiger;K. Martens
影响因子：
4.4
作者：
MCCREA, JM
通讯作者：
MCCREA, JM