Effects of leaf litter tannin on soil ammonium and nitrate content in two different forest soils of mount Wuyi, China

Research on Mount Wuyi, China, reveals that tannin content in leaf litter significantly influences soil nitrogen (N) dynamics, particularly reducing inorganic N levels more rapidly for ammonium (NH4+-N) than nitrate (NO3−-N). The study found that microbial immobilization alone does not fully explain the observed decline in N, suggesting complex interactions between litter decomposition stages and soil types. Conducted through an incubation experiment using two forest soils (Hapludults and Haplohumults), the findings highlight how plant litter quality affects nitrification and N immobilization, advancing understanding of subtropical acidic forest ecosystems.

Ma, H.-L., Gao, R., Yin, Y.-F., & Yang, Y.-S. (2016). Effects of leaf litter tannin on soil ammonium and nitrate content in two different forest soils of mount Wuyi, China. Toxicological & Environmental Chemistry, 98(3-4), 395–409. https://doi.org/10.1080/02772248.2015.1123483