scholarly journals A High–Resolution Accumulation Record of Arsenic and Mercury after the First Industrial Revolution from a Peatland in Zoige, Qinghai–Tibet Plateau

Land ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 1241
Author(s):  
Xuhui Chen ◽  
Qianqian Su ◽  
Huai Chen ◽  
Dan Xue

The impacts of human activities on Zoige peatlands are poorly documented. We determined the concentrations and accumulation rates of As and Hg in a 210Pb-dated peat profile collected from this area and analyzed the correlations between accumulation rates of both As and Hg and other physicochemical properties. To reconstruct recent conditions of As and Hg, we analyzed peat sediments of Re’er Dam peatland in Zoige using 210Pb and 137Cs dating technologies. The concentrations of total As (86.38 to 174.21μg kg−1) and Hg (7.30 to 32.13 μg kg−1) in the peat profile clearly increased after the first industrial revolution. From AD 1824 to AD 2010, the average accumulation rates were 129.77 μg m−2 yr−1 for As and 18.24 μg m−2 yr−1 for Hg. Based on our results, anthropogenic emissions significantly affected the atmospheric fluxes of As and Hg throughout the past 200 years, and As was also likely to be affected by other factors than atmospheric deposition, which needs further identification by future studies. The historical variations in As and Hg concentrations in Re’er Dam peatland in Zoige mirror the industrial development of China.

Author(s):  
Daniel Blackie

A common claim in disability studies is that industrialization has marginalized disabled people by limiting their access to paid employment. This claim is empirically weak and rests on simplified accounts of industrialization. Use of the British coal industry during the period 1780–1880 as a case study shows that reassessment of the effect of the Industrial Revolution is in order. The Industrial Revolution was not as detrimental to the lives of disabled people as has often been assumed. While utopian workplaces for disabled people hardly existed, industrial sites of work did accommodate quite a large number of workers with impairments. More attention therefore needs to be paid to neglected or marginalized features of industrial development in the theorization of disability. Drawing on historical research on disability in the industrial workplace will help scholars better understand the significance of industrialization to the lives of disabled people, both in the past and the present.


2012 ◽  
Vol 23 (4) ◽  
pp. 292-300 ◽  
Author(s):  
Cheng Weiming ◽  
Zhao Shangmin ◽  
Zhou Chenghu ◽  
Chen Xi

2014 ◽  
Vol 41 (1) ◽  
pp. 81-86 ◽  
Author(s):  
Eskander Alhajji ◽  
Iyas Ismail ◽  
Mohammad Al-Masri ◽  
Nouman Salman ◽  
Mohammad Al-Haleem ◽  
...  

Abstract The constant rate of supply (CRS) of excess 210Pb model was successfully applied to assess 210Pb data of two sediment cores from the lake Qattinah, Syria. Gamma spectrometry was used to determine 137Cs and 210Pb activity concentrations. The bottom of the cores was 210Pb-dated to years 1907 and 1893. The accumulation rates were determined using 210Pb method and found to vary similarly in both cores from 0.10 ± 0.01 to 3.78 ± 0.57 kg m−2 y−1 during the past century. 137Cs was used as an in-dependent chronometer. The two distinct peaks observed on the 137Cs record of both cores, corresponding to 1965 and 1986, have allowed a successful validation of the CRS model.


2020 ◽  
Vol 12 (1) ◽  
pp. 59-70
Author(s):  
Biao Peng ◽  
Jichang Han ◽  
Xiao Xie ◽  
Luyao Wang

AbstractThe present is the key to the past. Based on the dissection of modern beach-bars in the Qinghai Lake, Qinghai-Tibet Plateau, China, including two profiles parallelly to the shoreline, two profiles vertically to the shoreline and one plane-view profile, the sedimentary succession and recognition marks of lacustrine gravel beach-bars have been summarized. Vertically, the lacustrine gravel beach-bars develop with the “ABC” succession. The A interval, the B interval, and the C interval respectively correspond with the gravelly sand facies, the well-sorted gravel facies, and the graded sand facies. The lacustrine gravel beach-bars is composed of several combinations of the “ABC” succession, such as “ABAB”, “ABCABC”, “BCBC”. The main recognition marks of lacustrine gravel beach-bars is the following: the bottom contact is distinct and with the “ABC” succession; and the lacustrine beach-bars develop the swash bedding and sheet-like parallelly to the lakeshore. These viewpoints have significant contributions to the reconstruction of paleoenvironments and paleoshorelines and to the reservoir interpretation within lacustrine beach-bar clastic bodies.


Sign in / Sign up

Export Citation Format

Share Document