Collaborative Research: Quantifying Human Forcing of Legacy Sediment and Metal Contamination Dynamics on the Yunnan Plateau of Southwestern China

合作研究：量化中国西南部云南高原遗留沉积物和金属污染动态的人类强迫

• 批准号: 2120366
• 负责人: Aubrey Hillman
• 金额: $ 16.43万
• 依托单位: SUNY at Albany
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-01-15 至 2022-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2120366&HistoricalAwards=false
• 关键词: Collaborative; Research; Quantifying; Human; Forcing

Globally, metal contamination from past human activities hinders human management of environmental systems, particularly soils (agriculture) and aquatic systems (drinking water). One of the universal challenges in the management of these historical contaminants is that they can be transported by both the wind and in water (generally attached to sediments in water). Clarification of the relative importance of these transport pathways is fundamental to the successful management of contaminated soils and prevention of future soil degradation worldwide. In many cases, there are substantial delays in the water-sediment pathway, and these delays create challenges in risk evaluation of recent contamination. Further, more recent activities such as urbanization can remobilize historical contamination. This project focuses on the Yunnan region of China, a region with multiple historical periods of metal extraction and purification. Reconstruction of the long history of interactions between the airborne and waterborne contaminant transport in the Yunnan allows examination of the environmental implications of substantial global metal contamination that has occurred with the industrial revolution and the influence of land use changes on contaminant mobilization. This research aims to develop a longer-term perspective of sediment dynamics in southwestern China and assess the timing, magnitude, rate, and source of metal accumulation in lake environments. In particular, the project links three goals: 1) Quantitatively estimate the amount of metal contaminants stored in watershed soils and attribute their source using geochemical mixing models; 2) Identify the controls on erosion, transport, accumulation, and redistribution of these metal contaminants, particularly human controls by examination of historical events recorded in sediments; and 3) Document the influences of natural climate variability versus human activity on metal accumulation in lake systems. When combined, these goals provide the means to measure the risks of contamination stored in the landscape to all modern human systems and enhance our understanding of how cumulative watershed impacts influence our Earth system.This award is cofunded by the Geomorphology and Land-use Dynamics Program, the Experimental Program to Stimulate Competitive Research, and the Office of International Science and Engineering.

在全球范围内，过去人类活动的金属污染阻碍了人类对环境系统的管理，尤其是土壤（农业）和水生系统（饮用水）。 这些历史污染物的管理中的普遍挑战之一是，它们可以通过风和水中的水（通常连接到水中的沉积物）中。 阐明这些运输途径的相对重要性是成功管理受污染的土壤和预防全球未来土壤退化的基础。 在许多情况下，水供应途径存在大量延误，这些延误在最近污染的风险评估时造成了挑战。 此外，诸如城市化之类的最新活动可以重新阐明历史污染。 该项目着重于中国云南地区，该地区具有多个历史时期的金属提取和纯化。 在云南的空降和水上污染物运输之间的悠久相互作用的重建允许研究在工业革命中发生的实质全球金属污染的环境含义以及土地利用对污染物动员的影响。这项研究旨在发展中国西南部沉积物动态的长期视角，并评估湖泊环境中金属积累的时机，大小，速率和来源。 特别是，该项目链接了三个目标：1）定量估计存储在流域土壤中的金属污染物的量，并使用地球化学混合模型归因于其来源； 2）确定对这些金属污染物的侵蚀，运输，积累和重新分布的控制，尤其是通过检查沉积物中记录的历史事件的人类控制； 3）记录自然气候变异性与人类活动对湖泊系统中金属积累的影响。 合并后，这些目标提供了衡量景观中所有现代人类系统中污染的风险的方法，并增强了我们对累积分水岭如何影响我们的地球系统的理解。该奖项由地貌和土地使用动力学计划获得了奖励。 ，刺激竞争研究的实验计划以及国际科学与工程的办公室。

项目成果

Contrasting ecosystem responses to climatic events and human activity revealed by a sedimentary record from Lake Yilong, southwestern China

中国西南部仪龙湖的沉积记录揭示了生态系统对气候事件和人类活动的反应对比

• DOI: 10.1016/j.scitotenv.2021.146922
• 发表时间: 2021
• 期刊: Science of the Total Environment
• 影响因子: 9.8
• 作者: Yuan Zijie;Wu Duo;Niu Lili;Ma Xuyi;Li Youmo;Hillman Aubrey L.;Abbott Mark B.;Zhou Aifeng
• 通讯作者: Zhou Aifeng

Yilong lake level record documents coherent regional-scale changes in Holocene water balance in Yunnan, southwestern China

• DOI: 10.1016/j.palaeo.2022.111148
• 发表时间: 2022-09
• 期刊: Palaeogeography, Palaeoclimatology, Palaeoecology
• 作者: A. Hillman;Angelena N. Campisi;M. Abbott;D. Bain;Melissa P. Griffore;R. Tisherman;Zijie Yuan;Duo Wu

Metal ratio mixing models clarify metal contamination sources to lake sediments in Yunnan, China

• DOI: 10.1016/j.scitotenv.2022.153247
• 发表时间: 2022-01-22
• 期刊: SCIENCE OF THE TOTAL ENVIRONMENT
• 影响因子: 9.8
• 作者: Bain, Daniel J.;Hillman, Aubrey L.;Wu, Duo
• 通讯作者: Wu, Duo