Abstract: Empirical data on the menyuan horse farm grazingland in Qinghai of. China were used for linear programming model and optimal exploitation strategy study. The optimal population structure and optimal slaughter program of tibetan sheep, improved sheep and yak were put forward respectively. On grazingland where livestock populations are composed of tibetan sheep, improved sheep, yak and horse, improved sheep is a principal ingredient, amounts of yak and horse are kept at quantitatively lower limit, and tibetan sheep is totally eliminated. On grazingland where livestock populations are composed of tibetan sheep, yak and horse, tibetan sheep is a principal ingredient, and amounts of yak and horse are kept at quantitatively lower limit. Based on this program to manage the grazingland, the economic revenues can be increased. And these programs can lighten over intakes of livestock populations at the grazingland in winter and spring. The price analysises demonstrate that the current price system of livestock products need to be readjusted in Qinghai province.

Key words: Alpine meadow ecosystem, Livestock populaions, Linear programming model, Optimal exploitation strategies