Nutrients addition regulates temperature sensitivity of maize straw mineralization

Publikation: Beiträge in ZeitschriftenZeitschriftenaufsätzeForschungbegutachtet

Authors

  • Muhammad Auwal
  • Bhupinder Pal Singh
  • Zhiyi Chen
  • Amit Kumar
  • Shaotong Pan
  • Yu Luo
  • Jianming Xu

Purpose: The study aimed to determine the interactive effect of temperature with nutrients on maize residues decomposition in soil. Materials and methods: We conducted an incubation of 87 days by applying maize straw (δ13C value of −11.2‰) to soil (δ13C value of −26.3‰) with low (N0), medium (NM), and high (NH) level of nutrients addition, at two temperature levels of 5 °C (T-L) and 25 °C (T-H). We measured the cumulative CO2-C efflux, residues decomposition, temperature sensitivity (Q10), and extracellular enzyme activities. Results and discussion: Increased temperature significantly increased cumulative CO2 efflux and straw decomposition, with an enhanced rate of active (Ka) and slow (Ks) pools of soil and residues C. The mean values of Q10 ranged from 1.4 to 1.6 for the total CO2 efflux and 1.4 to 1.7 for maize straw decomposition. The outcome might be due to temperature-dependent microbial activation at 25 °C. The activities of β-glucosidase, α-glucosidase, cellobiohydrolase, and β-xylosidase enzymes were positively correlated with cumulative CO2 emissions at 25 °C suggesting microbial regulation on SOM decomposition. We found a U-shaped pattern of nutrients regulation on the temperature sensitivity of maize straw decomposition, with the lowest Q10 under NM. Conclusions: Our findings suggest that nutrients regulated the temperature effects on residue C decomposition by adjusting microbial activity (extracellular enzyme activities). Consequently, it may lead to soil C sequestration under the current climate change scenario.

OriginalspracheEnglisch
ZeitschriftJournal of Soils and Sediments
Jahrgang21
Ausgabenummer8
Seiten (von - bis)2778-2790
Anzahl der Seiten13
ISSN1439-0108
DOIs
PublikationsstatusErschienen - 01.08.2021

DOI

Zuletzt angesehen

Aktivitäten

  1. Standardizing diversity in ‘global music’
  2. Science and Art of Simulation Workshop - SAS 2015
  3. MSc-Thesis: Leaf litter as template for ant communities in a tree diversity experiment
  4. Forschungsgruppe anwendungsorientierte Steuerlehre (FAST) (Externe Organisation)
  5. Making students becoming responsible citizens in 21st century by fostering mathematical reasoning about real-world applications
  6. More Successful Thanks To Qualification And Mentorship? Analyses Of Determinants Of The Professional Success Of School Principals
  7. Entwicklung und Validierung eines videobasierten Instruments zur Erfassung von Feedbackkompetenz.
  8. Die Unmöglichkeit einer Insel
  9. Projektbeirat
  10. IEEE International Conference on Information Communication and Signal Processing - ICICSP 2019 (Veranstaltung)
  11. "Integration on the ground" - Assumptions and Consequences of Neighbourhood Strategies
  12. 9th Conference of the Foundations of Digital Games - FDG 2014
  13. User Conference IAB Establishment Panel 2012
  14. Computersimulation und Super-GAU
  15. Modewort "Innovation"
  16. Exploring cultural landscape narratives to understand differences in meaning and their implications for governance
  17. Die Transformation des Kunstfeldes
  18. How Relationship Networks Influence Women Social Entrepreneurs
  19. Bauhaus-Universität Weimar (Externe Organisation)
  20. Assessment options for students with special educational needs in large scale assessments
  21. Dissertation "Leaders over parties? The personalization of politics and voting behavior in contemporary Western Democracies"
  22. Kunstform (Zeitschrift)
  23. Gottfried Wilhelm Leibniz Universität Hannover (Externe Organisation)