Low O level enhances CH-derived carbon flow into microbial communities in landfill cover soils.

Clicks: 304
ID: 70649
2019
Article Quality & Performance Metrics
Overall Quality
Not rated
Combines reader engagement with the AI quality analysis. This article has not been analysed, so there is no overall score — reader engagement is measured and shown alongside.
AI Quality Assessment
Not analyzed
Readership in this journal
Steady

Ranked #76 of 145 articles by views in Environmental pollution (Barking, Essex : 1987)

Most read Least read

Bar heights use a square-root scale. Only the 120 most-read articles are drawn; the journal has 145 in total.

Mint this article as an NFT
Not yet minted

Create a permanent, verifiable on-chain record of this article on the Scimatic Network. The NFT is held in your Journament account, and you can withdraw it to your own wallet at any time.

5 SUSD one-off · no wallet required
Sign in to mint
Abstract
CH oxidation in landfill cover soils plays a significant role in mitigating CH release to the atmosphere. Oxygen availability and the presence of co-contaminants are potentially important factors affecting CH oxidation rate and the fate of CH-derived carbon. In this study, microbial populations that oxidize CH and the subsequent conversion of CH-derived carbon into CO, soil organic C and biomass C were investigated in landfill cover soils at two O tensions, i.e., O concentrations of 21% ("sufficient") and 2.5% ("limited") with and without toluene. CH-derived carbon was primarily converted into CO and soil organic C in the landfill cover soils, accounting for more than 80% of CH oxidized. Under the O-sufficient condition, 52.9%-59.6% of CH-derived carbon was converted into CO (CE), and 29.1%-39.3% was converted into soil organic C (CE). A higher CE and lower CE occurred in the O-limited environment, relative to the O-sufficient condition. With the addition of toluene, the carbon conversion efficiency of CH into biomass C and organic C increased slightly, especially in the O-limited environment. A more complex microbial network was involved in CH assimilation in the O-limited environment than under the O-sufficient condition. DNA-based stable isotope probing of the community with CH revealed that Methylocaldum and Methylosarcina had a higher relative growth rate than other type I methanotrophs in the landfill cover soils, especially at the low O concentration, while Methylosinus was more abundant in the treatment with both the high O concentration and toluene. These results indicated that O-limited environments could prompt more CH-derived carbon to be deposited into soils in the form of biomass C and organic C, thereby enhancing the contribution of CH-derived carbon to soil community biomass and functionality of landfill cover soils (i.e. reduction of CO emission).
Reference Key
he2019lowenvironmental Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors He, Ruo;Su, Yao;Leewis, Mary-Cathrine;Chu, Yi-Xuan;Wang, Jing;Ma, Ruo-Chan;Wu, Donglei;Zhan, Liang-Tong;Herriott, Ian Charold;Leigh, Mary Beth;
Journal Environmental pollution (Barking, Essex : 1987)
Year 2019
DOI
S0269-7491(19)32097-4
URL
Keywords
methanotrophs stable isotope probing landfill cover soils methane oxidation methane-derived carbon oxygen concentration

Citations

No citations found. To add a citation, contact the admin at info@scimatic.org

Comments

No comments yet. Be the first to comment on this article.