Physiological indices of grazed grassland under health management

Abstract

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/Gratio) were feasible to evaluate the sustainable management on the function and health of grazed grasslands. The reasonable threshold values of PLL, PULand R/Gratio 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.

Key words: Grazed grassland, Health evaluation, Double factor method of physiological threshold

CLC Number:

S181
S12.3

HOU Fujiang, LI Guang, CHANG Shenghua . Physiological indices of grazed grassland under health management[J]. Chinese Journal of Applied Ecology, 2002, (8): 1049-1053.

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