Jensen, J.; Fransson, P.; Baum, C.; Leinweber, P.; Eckhardt, K.-U.; Weih, M. Variety and Site Drive Salix Mixture Effects on Soil Organic Matter Chemistry and Soil Carbon Accumulation. Preprints2024, 2024070312. https://doi.org/10.20944/preprints202407.0312.v1
APA Style
Jensen, J., Fransson, P., Baum, C., Leinweber, P., Eckhardt, K. U., & Weih, M. (2024). Variety and Site Drive <em>Salix</em> Mixture Effects on Soil Organic Matter Chemistry and Soil Carbon Accumulation. Preprints. https://doi.org/10.20944/preprints202407.0312.v1
Chicago/Turabian Style
Jensen, J., Kai-Uwe Eckhardt and Martin Weih. 2024 "Variety and Site Drive <em>Salix</em> Mixture Effects on Soil Organic Matter Chemistry and Soil Carbon Accumulation" Preprints. https://doi.org/10.20944/preprints202407.0312.v1
Abstract
Soil organic matter (SOM) is essential for nutrient cycling and soil carbon (C) accumu-lation, both of which are heavily influenced by the quality and quantity of plant litter. Since SOM dynamics in relation to plant diversity are poorly understood we investigated the effects of willow variety and mixture, and site on the soil C stocks, SOM chemical composition and ther-mal stability. Using pyrolysis-field ionization mass spectrometry we analysed the top 10 cm of soil from two 7-year-old experimental sites in Germany and Sweden, with monocultures and mixtures of two willow varieties (Salix spp.) belonging to different species. Overall, site had the strongest effect on SOM quality. Results showed significant variability across sites for willow identity and mixture effects on C accumulation and SOM chemistry. In the German site (Ros-tock), yearly soil C accumulation was higher (p < 0.05) for variety ‘Loden’ (1.0 Mg C ha-1 year-1) compared to ‘Tora’ (0.5 Mg C ha-1 year-1), whilst in the Swedish site (Uppsala), both varieties ex-hibited similar soil C accumulation rates of around 0.6 Mg C ha-1 year-1. Willow variety identity significantly affected SOM quality at both sites, while mixing had minor effects. Our findings emphasize the significance of site-specific context and variety or species identity in shaping soil C accumulation in willow plantations.
Keywords
variety or species mixing; Soil organic matter; carbon sequestration; chemical composition; thermal stability
Subject
Environmental and Earth Sciences, Soil Science
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
