摘要
确定人类世地层标志物是选取全球层型剖面和点(GSSP)的重要前提。目前水系沉积记录作为人类世GSSP的候选表现出显著优越性。水系沉积物中的持久性有机污染物(POPs)可以连续、高分辨率地反映人类活动影响和强度变化,通过横向对比全球POPs历史变化可以获取潜在标志物的高速增长起点。本次研究收集了3类POPs的69套数据,通过分析数据的时间趋势重建其沉积记录,以求获得全球范围内各类POPs的增长特征。全球沉积记录显示20世纪40~60年代间不同类型的POPs开始展现出不同程度的快速增长,其中多环芳烃(PAHs)和多氯联苯(PCBs)可以作为潜在的标志物指示沉积物中化学地层的界限,有机氯农药(OCPs)中只有滴滴涕(DDTs)具备这种特性。同时,这3类POPs的沉积记录可以反映人类能源消耗、农业生产和工业品商品制造等方面活动,作为标志物体现人类多种活动营力在地球系统中留下的证据。
Hydrographic sedimentary record was supposed to be potential mark by researchers.It is essential to ensure the formation marker for Global stratotype profiles and points(GSSP).Sedimentary persistent organic pollutants(POPs)have the ability to reflect anthropogenic impacts continuously and accurately.69 data of sedimentary cores point for 3 POPs were compiled from 6 continents to reconstruct their temporal trends and recurrence their globe temporal trends by meta-analysis.The global sedimentary records show that different types of POPs began to show rapid growth between the 1940s and 1960s in varying degrees.Temporal trends in polycyclic aromatic hydrocarbon(PAH),polychlorinated biphenyl(PCB)and dichlorodiphenyltrichloroethane(DDT)are potential markers to indicate geochemical boundary in sedimentary profiles.Furthermore,the historical energy consumption can be reconstructed by the PAHs,the OCPs are more related to the history of agricultural production,and the industrial consumption are also recorded by the PCBs in sedimentary cores.Sedimentary records of 3 POPs were geochemical markers to well-founded reflect anthropogenic force on earth system on account of human activities.This manuscript discusses the 3 types of POPs record around the world in the context of temporal trends as well as their possiblity in the chemostratigraphy of the Anthropocene series.
作者
王棋
李俊
袁国礼
WANG Qi;LI Jun;YUAN Guoli(School of Earth Sciences and Resources,China University of Geosciences(Beijing),Beijing 100083)
出处
《第四纪研究》
CAS
CSCD
北大核心
2021年第6期1697-1713,共17页
Quaternary Sciences
基金
国家自然科学基金面上项目(批准号:41872100和41372249)
中国地质大学(北京)基本科研经费优秀导师基金项目(批准号:2652019196)
中国地质大学(北京)基本科研经费优秀教师基金项目(批准号:2652019064)共同资助。
关键词
人类世
水系沉积物
地球化学标志物
持久性有机污染物
Anthropocene
hydrographic sedimentary records
geochemical marker
persistent organic pollutants
