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英文文献：Positive Analysis of Invasive Species Control as a Dynamic Spatial Process-作为一个动态空间过程的入侵物种控制的实证分析
英文文献作者：Buyuktahtakin, Esra,Feng, Zhuo,Olsson, Aaryn,Frisvold, George B.,Szidarovszky, Ferenc
英文文献摘要：
This paper models control of invasive buffelgrass (Pennisetum ciliare), a fire-prone African bunchgrass spreading rapidly across the southern Arizona desert as a spatial dynamic process. Buffelgrass spreads over a gridded landscape. Weed carrying capacity, treatment costs, and damages vary over grid cells. Damage from buffelgrass depends on its spatial distribution in relation to valued resources. We conduct positive analysis of recommended heuristic strategies for buffelgrass control, evaluating their ability to prevent weed establishment and to reduce damage indices over time. The high dimensionality of the problem makes full dynamic optimization intractable. However, two heuristic strategies – potential damage weighting and consecutive year treatment – perform well in terms of percent damage reduction relative to no treatment and to static optimization. Results also suggest specific recommendations for deployment of rapid rapid-response teams to prevent invasions in new areas. The long-run population size and spatial distribution of buffelgrass is sensitive to priority weights for protection of different resources. Land managers with different priorities may pursue quite different control strategies, which may pose a challenge for coordinating control across jurisdictions.
摘要本文以入侵牧草狼尾草为模型，对其在美国亚利桑那州南部沙漠中快速蔓延的空间动态过程进行控制。Buffelgrass蔓延在网格景观。杂草的携带能力，处理成本，和损害不同的网格细胞。buffelgrass的危害取决于其与宝贵资源的空间分布。我们对推荐的缓冲草控制启发式策略进行了积极的分析，评估它们防止杂草建立和随着时间的推移减少损害指数的能力。问题的高维性使得全动态优化问题难以解决。然而，两种启发式策略——潜在损伤加权和连续年处理——在相对于不处理和静态优化的损伤减少百分比方面表现良好。结果还提出了部署快速反应小组以防止新地区入侵的具体建议。buffelgrass的长期种群规模和空间分布对不同资源保护的优先权值非常敏感。具有不同优先级的土地管理者可能会采取完全不同的控制策略，这可能对跨司法管辖区协调控制构成挑战。
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