Effects of permafrost collapse on soil bacterial communities in a wet meadow on the northern Qinghai-Tibetan Plateau ...

• Main Authors: Wu, Xiaodong, Xu, Haiyan, Liu, Guimin, Zhao, Lin, Mu, Cuicui
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: figshare 2018
• Subjects: Biochemistry; Environmental Sciences not elsewhere classified; Chemical Sciences not elsewhere classified; Ecology; FOS Biological sciences; Biological Sciences not elsewhere classified; permafrost; Thermokarst
• Online Access: https://dx.doi.org/10.6084/m9.figshare.c.4207799.v1; https://springernature.figshare.com/collections/Effects_of_permafrost_collapse_on_soil_bacterial_communities_in_a_wet_meadow_on_the_northern_Qinghai-Tibetan_Plateau/4207799/1

Abstract Background Permafrost degradation may develop thermokarst landforms, which substantially change physicoâ chemical characteristics in the soil as well as the soil carbon stock. However, little is known about changes of bacterial community among the microfeatures within thermokarst area. Results We investigated bacterial communities using the Illumina sequencing method and examined their relationships with soil parameters in a thermokarst feature on the northern Qinghai-Tibetan Plateau. We categorized the ground surface into three different micro-relief patches based on the type and extent of permafrost collapse (control, collapsing and subsided areas). Permafrost collapse significantly decreased the soil carbon density and moisture content in the upper 10Â cm samples in the collapsing areas. The highest loading factors for the first principal component (PC) extracted from the soil parameters were soil carbon and nitrogen contents, while soil moisture content and C:N ratios were the highest loading ...