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Jian Li

Doctoral student

The storage of carbon (C) in plant biomass and soil is one of the most important ecosystem services provided by the terrestrial biosphere. A large part of this C is stored in complex soil organic matter (SOM) with long turnover times of several decades. Microbial decomposition of SOM also results in mineralization of nitrogen (N), which is the nutrient that most commonly limit primary production in terrestrial ecosystems.

Recent evidence suggests that plants can accelerate the decomposition of SOM by exuding labile C. The phenomenon is referred to as "priming" and appears to be one of the quantitatively most important processes for the decomposition of SOM. However, the priming effect is highly variable and its mechanism and controlling factors are not well understood. Abiotic factors such as temperature, moisture and nutrient availability have a strong influence on the growth and activity of soil microorganisms. The same factors are also major determinants regulating the rate at which C and N are cycled in the environment.

The overall aim of the proposed project is to address these knowledge gaps and determine the degree to which gross N mineralization and priming is influenced by variations in temperature, moisture, and the availability of carbon and nitrogen.

Publications

Retrieved from Lund University's publications database

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Publications

Retrieved from Lund University's publications database

Publications

Retrieved from Lund University's publications database

Page Manager:
Jian Li
E-mail: jian [dot] li [dot] 7426 [at] biol [dot] lu [dot] se

Doctoral student

MEMEG

50

Research group

Microbial Ecology

Projects

 

Supervisors

Main supervisor

Erland Bååth

Assistant supervisor

Per Bengtson