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Making hedgerows pay their way: the economics of harvesting field boundary hedges for bioenergy
Agroforestry Systems ( IF 2.2 ) Pub Date : 2021-04-17 , DOI: 10.1007/s10457-021-00631-9
Jo Smith , Sally Westaway , Samantha Mullender , Michail Giannitsopoulos , Anil Graves

Existing landscape features, such as field boundary hedgerows, can contribute to food, fodder, material, and energy production for an EU bio-based circular economy. Recent trials undertaken by the project team in the UK demonstrated that hedgerows can be managed to produce woodfuel of a quality that meets industry standards. However, to be attractive to farmers, woodfuel production from hedgerows must be profitable. This paper uses the FarmSAFE model to undertake a financial assessment with data generated from these trials. The net present value of a standard hedgerow management method (flailing every 2 years) was compared with those from alternative hedgerow management scenarios for woodfuel production over a 60 year time horizon. Using data from the hedgerow trials, the results showed that coppicing hedgerows for woodfuel production could provide a profit to the farmer. The sale of woodchips into an off-farm market was found to be profitable if harvesting with tree shears (medium scale harvesting capacity) or a Bracke felling head (large scale harvesting capacity), but chainsaw harvesting (small scale harvesting capacity) was unprofitable. When considering the use of woodchips on farm to replace purchased woodchip or heating oil, the financial benefit to the farmer increased. Sensitivity analyses showed that the use of medium scale machinery (tree shears) made the hedgerow enterprise most resilient to changes in prices, grants, and costs. This scale of machinery is appropriate for local energy production whilst also being affordable to farmers and local contractors.



中文翻译:

使树篱赚钱:为生物能源收获田间边界树篱的经济学

现有的景观特征,例如田间边界树篱,可以促进欧盟基于生物的循环经济的粮食,饲料,材料和能源生产。英国项目团队最近进行的试验表明,可以管理树篱来生产质量符合行业标准的木质燃料。但是,为了对农民有吸引力,从树篱中生产的木质燃料必须是有利可图的。本文使用FarmSAFE模型对这些试验产生的数据进行财务评估。将标准树篱管理方法(每两年更新一次)的净现值与替代树篱管理方案在60年时间范围内生产木质燃料的净现值进行了比较。利用树篱试验的数据,结果表明,为种植木柴而种植树篱可以为农民带来利润。如果用树剪(中等规模的采伐能力)或Bracke采伐头(大规模的采伐能力)进行采伐,则将木片出售给非农市场是有利可图的,而链锯的采伐(小规模的采伐能力)则无利可图。当考虑在农场上使用木片代替购买的木片或取暖油时,对农民的经济利益增加了。敏感性分析表明,使用中型机械(剪树机)使树篱企业对价格,赠款和成本的变化最有弹性。这种机械规模适合当地能源生产,同时农民和当地承包商也可以负担得起。如果用树剪(中等规模的采伐能力)或Bracke采伐头(大规模的采伐能力)进行采伐,则将木片出售给非农市场是有利可图的,而链锯的采伐(小规模的采伐能力)则无利可图。当考虑在农场上使用木片代替购买的木片或取暖油时,对农民的经济利益增加了。敏感性分析表明,使用中型机械(剪树机)使树篱企业对价格,赠款和成本的变化最有弹性。这种机械规模适合当地能源生产,同时农民和当地承包商也可以负担得起。如果用树剪(中等规模的采伐能力)或Bracke采伐头(大规模的采伐能力)进行采伐,则将木片出售给非农市场是有利可图的,而链锯的采伐(小规模的采伐能力)则无利可图。当考虑在农场上使用木片代替购买的木片或取暖油时,对农民的经济利益增加了。敏感性分析表明,使用中型机械(剪树机)使树篱企业对价格,赠款和成本的变化最有弹性。这种机械规模适合当地能源生产,同时农民和当地承包商也可以负担得起。

更新日期:2021-04-18
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