LI, Wei et al. Spatial Heterogeneity and Vertical Distribution of Nitrogen Forms in Sediments of Qilu Lake. Frontiers in Sustainable Development, [S. l.], v. 6, n. 8, p. 20–34, 2026. DOI: 10.54691/2q44p450. Disponível em: https://fsdjournal.org/index.php/ojs/article/view/323. Acesso em: 23 oct. 2026.