Sensitivity of soil freeze/thaw dynamics to environmental conditions at different spatial scales in the central Tibetan Plateau

An enhanced understanding of environmental controls on soil freeze/thaw (F/T) dynamics at different spatial scales is critical for projecting permafrost responses to future climate conditions. In this study, a 1-D soil thermal model and multi-scale observation networks were used to investigate the s...

Full description

Saved in:
Bibliographic Details
Published in:The Science of the total environment 2020-09, Vol.734, p.139261-139261, Article 139261
Main Authors: Jiang, Huiru, Yi, Yonghong, Zhang, Wenjiang, Yang, Kun, Chen, Deliang
Format: Article
Language:English
Subjects:
active-layer thickness
Central Tibetan Plateau
climate
Earth and Related Environmental Sciences
Environmental Sciences & Ecology
Geovetenskap och miljövetenskap
ground-penetrating radar
Maximum frozen depth
organic
permafrost
snow cover
soil
Soil freeze/thaw dynamics
Soil moisture
temperature
thaw
Topography
vegetation
water-content
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:An enhanced understanding of environmental controls on soil freeze/thaw (F/T) dynamics at different spatial scales is critical for projecting permafrost responses to future climate conditions. In this study, a 1-D soil thermal model and multi-scale observation networks were used to investigate the sensitivity of soil F/T dynamics in the central Tibetan Plateau (TP) to environmental conditions at local (~10 km)-, medium- (~30 km), and large (~100 km)- scales. Model simulated soil temperature profile generally agrees well with the observations, with root-mean-square errors (RMSE) lower than 1.3 °C and 2.0 °C for two in-situ networks, respectively. Model simulated maximum frozen depths (MFD) closely related to elevation (R2 = 0.23, p 
ISSN:0048-9697
1879-1026
DOI:10.1016/j.scitotenv.2020.139261