Faculty of Science and Technology, Centre for Ecology, Environment and Sustainability, Bournemouth University, Poole, United Kingdom.
UK Centre for Ecology and Hydrology, Wallingford, United Kingdom.
PLoS One. 2021 Mar 5;16(3):e0247850. doi: 10.1371/journal.pone.0247850. eCollection 2021.
Given the negative environmental impacts of intensive agriculture, there is an urgent need to reduce the impact of food production on biodiversity. Ecological restoration of farmland could potentially contribute to this goal. While the positive impacts of ecological restoration on biodiversity are well established, less evidence is available regarding impacts on economic development and employment. Potentially, prospects for economic development could be enhanced by ecological restoration though increased provision of ecosystem services, on which some economic activity depends. Here we examined this issue through the development of contrasting land use scenarios for the county of Dorset, southern England. Two scenarios of future agricultural expansion were compared with two scenarios of landscape-scale ecological restoration and the current situation. Impacts on provision of multiple ecosystem services (ES) were explored using InVEST models and proxy values for different land cover types. Impacts on economic employment were examined using an economic input-output model, which was adjusted for variation in ES flows using empirically determined ES dependency values for different economic sectors. Using the unadjusted input-output model, the scenarios had only a slight economic impact (≤ 0.3% Gross Value Added, GVA). Conversely, when the input-output model was adjusted to take account of ES flows, GVA increased by up to 5.4% in the restoration scenarios, whereas under the scenario with greatest agricultural expansion, GVA was reduced by -4.5%. Similarly, employment increased by up to 6.7% following restoration, compared to declines of up to -5.6% following maximum agricultural expansion. These results show that the economic contribution of rural land is far greater than that attributable to agricultural production alone. Landscape-scale restoration of agricultural land can potentially increase the contribution of farmland to economic development and employment, by increasing flows of multiple ES to the many economic sectors that depend on them.
鉴于集约农业对环境的负面影响,迫切需要减少粮食生产对生物多样性的影响。农田生态恢复可能有助于实现这一目标。虽然生态恢复对生物多样性的积极影响已得到充分证实,但关于其对经济发展和就业的影响的证据较少。通过增加生态系统服务的提供,可能会增强经济发展的前景,因为一些经济活动依赖于这些服务。在这里,我们通过开发英格兰南部多塞特郡的对比土地利用情景来研究这个问题。将未来农业扩张的两种情景与两种景观尺度生态恢复情景和当前情况进行了比较。使用 InVEST 模型和不同土地覆盖类型的代理值来探讨多种生态系统服务(ES)提供的影响。使用经济投入产出模型研究了对经济就业的影响,该模型通过针对不同经济部门的 ES 依存值的经验确定来调整 ES 流的变化。使用未经调整的投入产出模型,情景对经济的影响很小(≤0.3%的总增加值,GVA)。相反,当投入产出模型调整以考虑 ES 流时,在恢复情景中 GVA 增加了高达 5.4%,而在农业扩张最大的情景中,GVA 减少了-4.5%。同样,与最大农业扩张后就业下降高达-5.6%相比,恢复后就业增加了高达 6.7%。这些结果表明,农村土地的经济贡献远远大于仅农业生产的贡献。通过增加对依赖它们的许多经济部门的多种 ES 流,对农业土地的景观尺度恢复可以潜在地增加农田对经济发展和就业的贡献。