Long‐Run versus Short‐Run Planning Horizons and the Rangeland Stocking Rate Decision
用动态最优控制模型分析牧场放牧率决策，发现当前动物体重减少的经济影响比未来牧草减产更重要，牧场主没有经济动机持续过度放牧。
Abstract Reduced future forage production, diminished range condition, and reduced animal performance have been major factors considered when setting rangeland stocking rates. The relative economic importance of diminished current period animal performance versus intertemporal forage production impacts was investigated using a dynamic optimal control model. The model is applied to yearling stocker production in eastern Colorado. Results indicate that intertemporal grazing impacts to forage production are not that important; reduced weight gain during the current period drives the economic stocking rate decision. Further, ranchers have no economic incentive as profit maximizers to continually overgraze the range.