Optimal Livestock Management on Sagebrush Rangeland with Ecological Thresholds, Wildfire, and Invasive Plants
研究了山艾树草原上存在入侵植物、野火及可逆与不可逆生态阈值时的最优畜牧管理，发现健康草原的牧场主有足够私人激励维持健康，而退化草原的牧场主仅在治理成功率提高或成本降低时才愿修复；若牧场主不理解放牧压力、植被治理与生态动态的关系，短期利润虽高但长期利润更低且生态退化更严重。
This article considers optimal livestock management on sagebrush rangeland in the presence of invasive plants, wildfire, and reversible and irreversible ecological thresholds. We find that ranchers operating on healthy rangeland have sufficient private incentive to maintain rangeland health, while ranchers operating on degraded rangeland will pursue rehabilitation only if treatment success rates are improved or treatment costs reduced relative to current levels. We also find that if ranchers do not understand the relationships among grazing pressure, vegetation treatments, and rangeland ecological dynamics, their management will result in higher short-run profits, but lower long-run profits, and greater ecological degradation. <i></i>