EGU2020-8363
https://doi.org/10.5194/egusphere-egu2020-8363
EGU General Assembly 2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Land use effect on microbial growth and respiration under future climate

Vusal Guliyev1,2, Melissa Pfeiffer1,3, Maria Udovenko1,4, Christina Fasching1, Thomas Reitz1, and Evgenia Blagodatskaya1
Vusal Guliyev et al.
  • 1Helmholtz Centre for Environmental Research – UFZ , Halle, Germany (vusal.guliyev@ufz.de)
  • 2Institute of Soil Science and Agro Chemistry, ANAS, Baku, Azerbaijan
  • 3Soil Biogeochemistry, Martin-Luther-University Halle-Wittenberg, Halle, Germany
  • 4Faculty of Soil Science, Lomonosov Moscow State University, Russian Federation

Fresh input of organic material in soil is continuously transformed and processed by growing microorganisms using this organic input as a substrate. Therefore, the quality and quantity of soil organic C stock is strongly dependent on the intensity of mineralization processes through microbial respiration and growth. We aimed to prove the sensitivity of microbial respiration and growth parameters to indicate an interactive effect of land use and climate warming. For this we used Global Change Experimental Facility in Bad Lauchstädt, UFZ, Halle, Germany. This long-term experiment is designed in 5 land use strategies (Organic Farming, Conventional Farming, Intensive Meadow, Extensive Meadow, and Extensive Pasture) and 2 climate scenarios (ambient and future). We determined basal respiration by CO2 emission, microbial growth parameters by substrate-induced growth respiration (SIGR), and the quality of soil organic matter by Fourier-transformed infrared spectroscopy (FTIR). The effect of biotic (vegetation type) and abiotic (temperature and moisture) factors on microbial attributes and on chemical composition of soil organic matter will be compared.

How to cite: Guliyev, V., Pfeiffer, M., Udovenko, M., Fasching, C., Reitz, T., and Blagodatskaya, E.: Land use effect on microbial growth and respiration under future climate, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-8363, https://doi.org/10.5194/egusphere-egu2020-8363, 2020