鄱阳湖水位变化数据集（过去两千年）

本研究通过地球化学手段反演了鄱阳湖水位变化的历史。首先，基于高分辨率的210Pb和14C测年，建立了鄱阳湖沉积的可靠年代框架。在此基础上，利用新兴的微生物标志物GDGTs湖水深度指标定量重建了鄱阳湖水位波动的连续历史。结果显示，鄱阳湖南部湖盆大约在两千年前开始形成；受气候变化、构造活动以及与长江相互作用的多种因素影响，过去两千年来鄱阳湖水位呈上升趋势，区域洪涝灾害威胁持续加剧。进一步结合鄱阳湖地区古城镇的历史变迁，研究团队发现自宋代起先民居住区海拔不再随湖泊水位的上升而上升，表明一千年前我国古代社会已开始具备应对洪水威胁的社会韧性，这可能与宋代我国科技的发展和经济的空前繁荣有关。另外，该研究揭示的鄱阳湖水位波动规律及其影响因素对于区域水利工程建设也具有参考意义。数据集收集了鄱阳湖过去两千年水位变化的生物标志物指标数据以及重建记录，共49个点数据。

This study reconstructs the historical water level changes of Poyang Lake using geochemical methods. First, a reliable chronological framework for Poyang Lake sediments was established based on high-resolution 210Pb and 14C dating. On this basis, a continuous history of water level fluctuations in Poyang Lake was quantitatively reconstructed using the emerging microbial biomarker GDGTs-based water depth proxy. The results show that the southern basin of Poyang Lake began to form approximately 2000 years ago; influenced by multiple factors including climate change, tectonic activity, and interactions with the Yangtze River, the water level of Poyang Lake has exhibited an upward trend over the past 2000 years, with the threat of regional flood disasters continuing to intensify. Further integrating the historical changes of ancient towns in the Poyang Lake region, the research team found that since the Song Dynasty, the elevations of ancient human residential areas no longer increased alongside the rising lake water levels, indicating that ancient Chinese society had developed social resilience to address flood threats as early as 1000 years ago, which may be linked to the advancements in science and technology and the unprecedented economic prosperity of the Song Dynasty in China. Additionally, the patterns of Poyang Lake's water level fluctuations and their influencing factors revealed by this study also provide reference values for regional water conservancy project construction. The dataset collects biomarker proxy data and reconstruction records related to water level changes in Poyang Lake over the past 2000 years, totaling 49 sampling point data entries.

搜集汇总

背景与挑战

背景概述

该数据集通过地球化学手段反演了鄱阳湖过去两千年的水位变化历史，基于210Pb和14C测年建立可靠年代框架，并利用微生物标志物GDGTs定量重建连续水位波动记录。数据显示鄱阳湖约两千年前开始形成，水位呈上升趋势，受多种因素影响，同时揭示了宋代以来社会应对洪水威胁的韧性，共包含49个点数据，适用于气候、环境和社会历史研究。