Riparian forests are among the most threatened ecosystems and their conservation are essential for the preservation of biological communities. The main objective of this study was to analyze the environmental quality of riparian forest sites inserted in three environmental matrices (rural, urban, industrial) by using structural parameters and functional traits of the lichen community. Lichens were sampled in the seven forest areas, along the Hydrographic Basin of Sinos River (HBSR), using the acetate method. Structural parameters and functional traits were analyzed in all sites as well as secondary metabolites of lichen species and photosynthetically active radiation (PAR) and latitude. 164 species were recorded. The richness per phorophyte, coverage and diversity were higher in the sites of the rural matrix in relation to the urban/industrial matrix, as well as the richness and functional diversity. Species with Trentepohlia photobiont, crustose growth form and apothecia reproductive strategy obtained the greatest richness in the rural sites. The greatest richness of species with secondary metabolites was registered in the forest sites of the urban/industrial matrix. Functional characteristics such as luminosity and altitude significantly impacted the distribution of species in riparian forest sites. The structural parameters and functional traits alterations in the lichen community demonstrated the depreciation of the environmental quality of the forest sites of the spring towards the mouth of the main river that constitutes the Hydrographic Basin in the subtropical region.

沿岸森林是受威胁最大的生态系统之一，其保护对于保护生物群落至关重要。这项研究的主要目的是通过使用地衣群落的结构参数和功能特征，分析插入三个环境矩阵（农村，城市，工业）的河岸林地的环境质量。使用醋酸盐法在沿汉斯河水文盆地（HBSR）的七个林区取样了地衣。分析了所有位点的结构参数和功能性状以及地衣物种的次生代谢产物以及光合有效辐射（PAR）和纬度。记录了164种。每个发色团的丰富度 与城市/工业矩阵相比，农村矩阵的站点的覆盖范围和多样性更高，并且其丰富性和功能多样性也更高。物种与Trentepohlia photobiont，壳状生长型和子囊盘生殖策略，在农村站点获得最大的丰富性。具有次生代谢产物的物种的最大丰富度记录在城市/工业基质的森林中。光度和海拔等功能特征极大地影响了河岸林区物种的分布。地衣群落的结构参数和功能特征的变化表明，春季的林地环境质量向构成亚热带地区水文盆地的主要河流河口下降。