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Potential impacts on ecosystem services of land use transitions to second-generation bioenergy crops in GB.
Global Change Biology Bioenergy ( IF 5.6 ) Pub Date : 2015-06-08 , DOI: 10.1111/gcbb.12263
Suzanne Milner 1 , Robert A Holland 1 , Andrew Lovett 2 , Gilla Sunnenberg 2 , Astley Hastings 3 , Pete Smith 3 , Shifeng Wang 3 , Gail Taylor 1
Affiliation  

We present the first assessment of the impact of land use change (LUC) to second‐generation (2G) bioenergy crops on ecosystem services (ES) resolved spatially for Great Britain (GB). A systematic approach was used to assess available evidence on the impacts of LUC from arable, semi‐improved grassland or woodland/forest, to 2G bioenergy crops, for which a quantitative ‘threat matrix’ was developed. The threat matrix was used to estimate potential impacts of transitions to either Miscanthus, short‐rotation coppice (SRC, willow and poplar) or short‐rotation forestry (SRF). The ES effects were found to be largely dependent on previous land uses rather than the choice of 2G crop when assessing the technical potential of available biomass with a transition from arable crops resulting in the most positive effect on ES. Combining these data with constraint masks and available land for SRC and Miscanthus (SRF omitted from this stage due to lack of data), south‐west and north‐west England were identified as areas where Miscanthus and SRC could be grown, respectively, with favourable combinations of economic viability, carbon sequestration, high yield and positive ES benefits. This study also suggests that not all prospective planting of Miscanthus and SRC can be allocated to agricultural land class (ALC) ALC 3 and ALC 4 and suitable areas of ALC 5 are only minimally available. Beneficial impacts were found on 146 583 and 71 890 ha when planting Miscanthus or SRC, respectively, under baseline planting conditions rising to 293 247 and 91 318 ha, respectively, under 2020 planting scenarios. The results provide an insight into the interplay between land availability, original land uses, bioenergy crop type and yield in determining overall positive or negative impacts of bioenergy cropping on ecosystems services and go some way towards developing a framework for quantifying wider ES impacts of this important LUC.

中文翻译:

土地用途向第二代生物能源作物过渡的土地对生态系统服务的潜在影响。

我们首次评估了土地利用变化(LUC)对第二代(2G)生物能源作物对在空间上为英国(GB)解决的生态系统服务(ES)的影响。使用了一种系统的方法来评估关于LUC从可耕地,半改良的草地或林地/森林到2G生物能源作物的影响的现有证据,为此开发了定量的“威胁矩阵”。威胁矩阵用于估计过渡到任一芒草的潜在影响,短轮伐木(SRC,柳树和杨树)或短轮伐林(SRF)。在评估可耕种作物向可耕种过渡带来的可用生物量的技术潜力时,发现ES的影响很大程度上取决于以前的土地用途,而不是2G作物的选择,从而对ES产生最积极的影响。将这些数据与约束掩码和SRC和Miscanthus的可用土地(由于缺少数据而在此阶段中省略了SRF)相结合,将英格兰西南和西北部分别确定为可以生长Miscanthus和SRC的地区,经济可行性,碳固存,高产和积极的ES效益相结合。这项研究还表明,并非所有的芒草都可以种植可以将SRC和SRC分配给农用土地等级(ALC)ALC 3和ALC 4,而ALC 5的合适区域则很少。在2020年种植情景下,在基准种植条件下,分别种植Miscanthus或SRC时,分别对146 583和71 890公顷产生了有利影响,分别提高到293 247和91 318公顷。结果提供了对土地可用性,原始土地用途,生物能源作物类型和产量之间相互作用的洞察力,以确定了生物能源作物种植对生态系统服务的总体正面或负面影响,并为建立量化这一重要生态系统影响的定量框架提供了某种途径LUC。
更新日期:2015-06-08
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