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| 高原湖泊中萝卜螺属壳体研究现状及展望 | |
| 引用本文： | 陈锋,冯金良.高原湖泊中萝卜螺属壳体研究现状及展望[J].地理科学进展,2018,37(10):1430-1441. |
| 作者姓名： | 陈锋 冯金良 |
| 作者单位： | 1. 山西财经大学环境经济学院,太原 030006 2. 山西财经大学地表过程与生态环境研究所,太原 030006 3. 中国科学院青藏高原研究所,北京 100101 |
| 基金项目： | 国家自然科学基金项目(41701224) |
| 摘 要： | 湖泊的古水文及古水化学重建是湖泊研究领域最具挑战性的工作之一。在湖泊、河湖相及高湖面沉积物中,萝卜螺属壳体化石广泛分布;而且现生萝卜螺属亦广泛地分布于全球的湖泊及河流。这些生物碳酸盐(文石)壳体成为一种潜在的和高分辨率的环境信息记录载体。近年来,萝卜螺属的生境及其壳体的稳定碳氧同位素和元素已经逐步被用于了解青藏高原及其他地区的古水文、古水化学和古气候的信息。然而,在萝卜螺属壳体如何记录其宿生水体的古水文、古水化学等信息,以及如何基于萝卜螺属壳体化石重建古环境等方面,仍有许多科学问题有待探索。本文在前人研究的基础上,侧重在作为环境信息载体的萝卜螺属的分类体系、生境研究及其应用和壳体指标(δ13Cshell,δ18Oshell,87Sr/86Sr,Sr/Ca和Mg/Ca)特征及其在环境重建中的应用等方面进行总结和展望。 |
| 关 键 词： | 高原湖泊 萝卜螺属 稳定碳氧同位素 锶同位素 壳体元素比值 古环境重建 |
| 收稿时间： | 2018-02-09 |
| 修稿时间： | 2018-05-05 |
Progress and prospects of research on shells of Radix sp. in lakes on the Tibetan Plateau |
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| Feng CHEN,Jinliang FENG.Progress and prospects of research on shells of Radix sp. in lakes on the Tibetan Plateau[J].Progress in Geography,2018,37(10):1430-1441. | |
| Authors: | Feng CHEN Jinliang FENG |
| Institution: | 1. Department of Environmental Economics, Shanxi University of Finance and Economics, Taiyuan 030006, China 2. Institute of Surface Processes and Ecological Environment, Shanxi University of Finance and Economics, Taiyuan 030006, China 3. Institute of Tibetan Plateau Research, CAS, Beijing 100101, China |
| Abstract: | Palaeohydrology and palaeohydrochemical reconstruction have always been one of the most challenging issues in lake research, and one of the main reasons for this is the lack of suitable archives. Radix sp. fossil shells are widely distributed in lakes, alluvial-lacustrine successions, and high level lake sediments on the Tibetan Plateau. These biogenic carbonate shells are a kind of promising high-resolution carrier of the environmental information. For example, the δ13Cshell values of the Radix shells are controlled by the δ13C of lake water dissolved inorganic carbon; the δ18Oshell values provide useful information about the isotopic composition of the ambient waters; and the Sr/Ca ratio of the Radix shells is significantly positively correlated with both the Sr/Ca ratio and the conductivity of the lake water. Therefore, the δ13Cshell and δ18Oshell values and element of the Radix sp. shells have been gradually used to provide the palaeohydrological and palaeoclimatic information on the Tibetan Plateau and other regions in existing studies. In addition, the 87Sr/86Srshell of Radix sp. reflects significantly the 87Sr/86Sr of the water in which the shells were formed. However, there are still many scientific issues to be explored: it is unclear how the shells of Radix sp. record the hydrological, hydrochemical, and other information of its ambient water, and how we reconstruct palaeoenvironment information based on the fossil shells of Radix sp. As a new environmental information archive, Radix sp. and their following aspects in existing research on lakes of the Tibetan Plateau were reviewed in this study, including: the classification systems of Radix sp., habitat studies of Radix sp. and applications, proxies of Radix sp. shell (δ13Cshell, δ18Oshell, 87Sr/86Sr, Sr/Ca and Mg/Ca), and palaeohydrochemical reconstruction in lakes, in order to explore the prospects for future study on Radix sp. This review found that significant unanswered questions still remain. For example, the influence of lake water chemistry and water depth on the distribution and survival of Radix sp. is unclear; it is not clear whether inter-species differences have an impact on the results of lake sediment and palaeoenvironmental studies; species level classification of Radix sp., oxygen isotope balance, and trace element need further study; and more environmental records of Radix sp. shells are needed, among others. |
| Keywords: | plateau lakes Radix sp stable carbon and oxygen isotopes strontium isotope shell element ratio palaeohydrochemical reconstruction |
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