Researchers found that microbial carbon fixation persists beneath the ice of Qinghai Lake, the largest saline lake in China, despite low temperatures and limited light. Dark-dependent carbon fixation was significantly greater than light-dependent fixation, suggesting a major winter carbon assimilation pathway in this saline lake.
Researchers found that water erosion increases microbial conversion of soil carbon to CO2, favoring decomposition of recalcitrant substrates. In contrast, deeper SOC remains more effectively protected within mineral-organic complexes and aggregates.
A comprehensive study analyzed data from 429 Chinese lakes, revealing how climate and nutrient pollution influence dissolved organic matter and greenhouse gas emissions. The research found that arid environments have higher DOM concentrations and that extreme weather events stimulate their accumulation.