title: [Physiological indices of grazed grassland under health management].
abstract: Evaluation of the function and health of grazed grassland is an important aspect of grazing ecology. Based on analyzing the physiological response of grassland to grazing, a double-factor method of physiological threshold was developed. Physiological low limit (PLL), physiological ultimate limit (PUL), and duration ratio of regrowth to grazing stage (R/G ratio) were feasible to evaluate the sustainable management on the function and health of grazed grasslands. The reasonable threshold values of PLL, PUL and R/G ratio could play an important role on the complete recovery of the function and health of grassland after grazing, which was the goal of sustainable management of grassland ecosystems.
authors.affiliation: College of Pastoral Agriculture Science and Technology, Lanzhou University.
authors.forename: Fujiang
authors.initials: F
authors.lastname: Hou
authors.forename: Guang
authors.initials: G
authors.lastname: Li
authors.forename: Shenghua
authors.initials: S
authors.lastname: Chang
mesh_terms: D017753:Ecosystem; D010788:Photosynthesis; D006109:Poaceae / Q000502:physiology*; D012987:Soil
chemical_list: D012987:Soil