[Physiological indices of grazed grassland under health management].
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.
Hou
Fujiang
F
College of Pastoral Agriculture Science and Technology, Lanzhou University.
Li
Guang
G
Chang
Shenghua
S
D017753:Ecosystem; D010788:Photosynthesis; D006109:Poaceae / Q000502:physiology*; D012987:Soil
D012987:Soil