Harbin
China
Harbin Normal University
Humus layer thickness, boreal forest, permafrost region, SEM, GWR
Water-soluble organic carbon, Permafrost, Forest, active layer, Spectroscopic technique
metal elements, permafrost, Ecological risk, Source identification
Pollen, Vegetation dynamics, Climate driven, Permafrost peatland evolution, Greater Khingan Mountains, Late Holocene