Reduced microbial stability in the active layer is associated with carbon loss under alpine permafrost degradation.
Proc Natl Acad Sci U S A
; 118(25)2021 06 22.
Article
in En
| MEDLINE
| ID: mdl-34131077
ABSTRACT
Permafrost degradation may induce soil carbon (C) loss, critical for global C cycling, and be mediated by microbes. Despite larger C stored within the active layer of permafrost regions, which are more affected by warming, and the critical roles of Qinghai-Tibet Plateau in C cycling, most previous studies focused on the permafrost layer and in high-latitude areas. We demonstrate in situ that permafrost degradation alters the diversity and potentially decreases the stability of active layer microbial communities. These changes are associated with soil C loss and potentially a positive C feedback. This study provides insights into microbial-mediated mechanisms responsible for C loss within the active layer in degraded permafrost, aiding in the modeling of C emission under future scenarios.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Carbon
/
Permafrost
/
Environmental Microbiology
Type of study:
Risk_factors_studies
Country/Region as subject:
Asia
Language:
En
Journal:
Proc Natl Acad Sci U S A
Year:
2021
Document type:
Article
Affiliation country:
China
Country of publication:
EEUU
/
ESTADOS UNIDOS
/
ESTADOS UNIDOS DA AMERICA
/
EUA
/
UNITED STATES
/
UNITED STATES OF AMERICA
/
US
/
USA