The North American horticultural industry and the risk of plant invasion
构建了园艺产业的垄断竞争模型，结合北美外来植物特征的风险分析，模拟了最优税收以内部化植物入侵的风险和成本。
Abstract We develop a monopolistic competition model of the horticultural industry and estimate the resulting profit function with U.S. and Canadian industry data. Combining the results with a hazard analysis of the characteristics of exotic plants introduced in North America, we explore optimal tax simulations for internalizing the risk and costs of a potential plant invasion. If the share of the exotic plant sales in final profits is large, then the resulting annual fee will be high, discouraging the expansion of the nursery industry. However, the annual revenues could fund efforts to mitigate the damages resulting from any accidental plant invasion.