中国云贵高原程海湖记录的西南地区重金属变化历史数据集（近千年以来）

重建铅污染历史的时空趋势对于理解全球铅循环、控制铅污染以及评估人类对环境影响的程度和时间具有重要意义。以云贵高原典型湖泊程海沉积物岩芯为研究对象，重建了云南地区近千年来的高分辨率重金属（Pb、Zn、Cd、Cu、Co和Ti）污染历史，揭示了重金属Pb的可能来源及其与全球Pb记录的关系。研究结果表明，在中世纪时期（1200s ~ 1500s） 铅浓度也很高，富集因子分析表明其主要来源于人为的采矿活动。在过去的两个世纪中，中国的铅污染程度从20世纪80年代开始再次快速增加，这与中国改革开放带来的社会经济转型和工业经济的快速增长相一致；而在美国和欧洲，铅浓度在50年代迅速上升，然后在80年代下降，与工业革命对发达国家地区的影响相一致。这些记录表明，Pb可作为人类世的区域人类活动强度指标。Reconstructing the spatiotemporal trends of lead pollution history is of great significance for understanding the global lead cycle, controlling lead pollution, and evaluating the magnitude and timing of human impacts on the environment. Taking the sediment core of Lake Chenghai, a typical lake on the Yunnan-Guizhou Plateau, as the research object, we reconstructed the high-resolution pollution history of heavy metals (Pb, Zn, Cd, Cu, Co and Ti) in the Yunnan region over the past millennium, and revealed the potential sources of heavy metal Pb and its correlation with global Pb records. The results show that lead concentrations were also high during the Medieval Period (1200s–1500s), and enrichment factor analysis indicates that these high levels mainly originated from anthropogenic mining activities. Over the past two centuries, lead pollution in China has increased rapidly again since the 1980s, which is consistent with the socio-economic transformation and rapid industrial growth brought about by China's reform and opening-up; while in the United States and Europe, lead concentrations rose rapidly in the 1950s and then declined in the 1980s, aligning with the impacts of the Industrial Revolution on developed regions. These records demonstrate that Pb can serve as a regional indicator of the intensity of human activities during the Anthropocene.

搜集汇总

背景与挑战

背景概述

该数据集基于云贵高原程海湖的沉积物岩芯，重建了西南地区近千年来高分辨率的重金属（包括Pb、Zn、Cd等）污染历史，揭示了人为活动如采矿和工业发展对重金属浓度的影响。数据覆盖了从中世纪到现代的时间范围，并关联了全球铅污染记录，强调了铅作为人类世区域活动指标的重要性。数据通过严格的质量控制（如ICP-AES测量，误差<5%），适用于地质学和环境变化研究。