Chuan, Xiaozhu Extracellular enzyme activity in grass litter varies with grazing history, environment and plant species in temperate grasslands. [electronic resource] - The Science of the total environment Feb 2020 - 134562 p. digital Publication Type: Journal Article ISSN: 1879-1026 Standard No.: 10.1016/j.scitotenv.2019.134562 doi Subjects--Topical Terms: AlbertaAnimalsEcosystemEnvironmental MonitoringGrasslandHerbivoryNitrogenPhosphorusPoaceaeSoil Microbiology