Multimetric spatial optimization of switchgrass plantings across a watershed
Multimetric spatial optimization of switchgrass plantings across a watershed
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跨流域柳枝稷种植的多指标空间优化
DOI：
10.1002/bbb.342
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
R. Middleton
中科院分区：
文献类型：
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作者：
Esther S. Parish;Michael Hilliard;L. Baskaran;V. Dale;N. Griffiths;P. Mulholland;Alexandre Sorokine;N. Thomas;M. Downing;R. Middleton
对生物能源作物日益增长的需求为我们的社会提供了设计更可持续景观的机会。我们创建了最佳可持续性模型（BLOSM）的生物质位置，以检验纤维素生物能源作物种植景观设计可以同时改善水质（即降低沉积物、总磷和总氮的浓度）并增加农民生产者利润的假设，同时实现原料生产目标。 BLOSM 使用六种情景进行运行，以确定柳枝稷 (Panicum virgatum) 种植位置，这些位置可能为下小田纳西州 (LLT) 流域规划的商业规模生物精炼厂提供供应。每种情景都力求实现不同的可持续发展目标：通过降低氮、磷或沉积物浓度来改善水质；利润最大化；这些条件的平衡；或这些条件的平衡，并附加转化不超过 25% 农业用地的限制。将情景结果与没有土地利用转换的基线情况进行比较。 BLOSM 结果表明，当 LLT 流域的一小部分（1.3%）种植多年生柳枝稷时，经济和环境相结合的优化方法可以同时实现多个目标。这里描述的多指标优化方法可以用作研究工具来考虑其他原料的生物能源种植、可持续性标准和地区。 John Wiley & Sons, Ltd 于 2012 年出版
The increasing demand for bioenergy crops presents our society with the opportunity to design more sustainable landscapes. We have created a Biomass Location for Optimal Sustainability Model (BLOSM) to test the hypothesis that landscape design of cellulosic bioenergy crop plantings may simultaneously improve water quality (i.e. decrease concentrations of sediment, total phosphorus, and total nitrogen) and increase profits for farmer‐producers while achieving a feedstock‐production goal. BLOSM was run using six scenarios to identify switchgrass (Panicum virgatum) planting locations that might supply a commercial‐scale biorefinery planned for the Lower Little Tennessee (LLT) watershed. Each scenario sought to achieve different sustainability goals: improving water quality through reduced nitrogen, phosphorus, or sediment concentrations; maximizing profit; a balance of these conditions; or a balance of these conditions with the additional constraint of converting no more than 25% of agricultural land. Scenario results were compared to a baseline case of no land‐use conversion. BLOSM results indicate that a combined economic and environmental optimization approach can achieve multiple objectives simultaneously when a small proportion (1.3%) of the LLT watershed is planted with perennial switchgrass. The multimetric optimization approach described here can be used as a research tool to consider bioenergy plantings for other feedstocks, sustainability criteria, and regions. Published in 2012 by John Wiley & Sons, Ltd