Potential impacts on ecosystem services of land use transitions to second-generation bioenergy crops in GB.
Potential impacts on ecosystem services of land use transitions to second-generation bioenergy crops in GB.
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DOI：
10.1111/gcbb.12263
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发表时间：
2016-03
期刊：
影响因子：
--
通讯作者：
Taylor G
中科院分区：
文献类型：
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作者：
Milner S;Holland RA;Lovett A;Sunnenberg G;Hastings A;Smith P;Wang S;Taylor G
我们提出了土地利用变化（LUC）对第二代（2G）生物能源作物对生态系统服务（ES）的影响的第一次评估，在空间上解决了英国（GB）。采用系统方法评估土地利用变化影响的现有证据，从可耕地、半改良草地或林地/森林到2G生物能源作物，并制定了定量“威胁矩阵”。威胁矩阵用于估计过渡到芒草，短轮伐期矮林（SRC，杨柳和白杨）或短轮伐期林业（SRF）的潜在影响。ES的影响被认为是在很大程度上依赖于以前的土地利用，而不是选择2G作物时，评估的技术潜力，从耕地作物过渡到ES的最积极的影响。将这些数据与SRC和Miscanthus的约束掩模和可用土地相结合（由于缺乏数据，SRF在此阶段被省略），英格兰西南部和西北部被确定为Miscanthus和SRC可以生长的地区，分别具有经济可行性，碳封存，高产和积极的ES效益的有利组合。这项研究还表明，并不是所有的芒属和SRC的预期种植都可以分配到农业土地等级（ALC）ALC 3和ALC 4，ALC 5的合适区域只有最低限度的可用性。在基线种植条件下，种植芒草或SRC分别对146 583和71 890公顷产生了有益影响，在2020年种植情景下分别增加到293 247和91 318公顷。研究结果提供了一个深入了解土地的可用性，原始土地利用，生物能源作物类型和产量之间的相互作用，在确定整体的积极或消极的影响，生物能源作物对生态系统服务和去一些方式发展的框架量化更广泛的ES影响这一重要的LUC。
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.