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首页> 外文期刊>Regional Environmental Change >Agroforestry trade-offs between biomass provision and aboveground carbon sequestration in the alpine Eisenwurzen region, Austria
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Agroforestry trade-offs between biomass provision and aboveground carbon sequestration in the alpine Eisenwurzen region, Austria

机译：Alpine Eisenwurzen Region，奥地利阿尔卑斯州的生物质拨款与地上碳封存之间的农业遗产折扣

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摘要

Mountain agroecosystems deliver essential ecosystem services to society but are prone to climate change as well as socio-economic pressures, making multi-functional land systems increasingly central to sustainable mountain land use policy. Agroforestry, the combination of woody vegetation with crops and/or livestock, is expected to simultaneously increase provisioning and regulating ecosystem services, but knowledge gaps concerning trade-offs exist especially in temperate industrialized and alpine regions. Here, we quantify the aboveground carbon (C) dynamics of a hypothetical agroforestry implementation in the Austrian long-term socio-ecological research region Eisenwurzen from 2020 to 2050. We develop three land use scenarios to differentiate conventional agriculture from an immediate and a gradual agroforestry implementation, integrate data from three distinct models (Yield-SAFE, SECLAND, MIAMI), and advance the socio-ecological indicator framework Human Appropriation of Net Primary Production (HANPP) to assess trade-offs between biomass provision and carbon sequestration. Results indicate that agroforestry strongly decreases HANPP because of a reduction in biomass harvest by up to - 47% and a simultaneous increase in actual net primary production by up to 31%, with a large amount of carbon sequestered in perennial biomass by up to 3.4 t C ha(-1) yr(-1). This shows that a hypothetical transition to agroforestry in the Eisenwurzen relieves the agroecosystem from human-induced pressure but results in significant trade-offs between biomass provision and carbon sequestration. We thus conclude that while harvest losses inhibit large-scale implementation in intensively used agricultural regions, agroforestry constitutes a valuable addition to sustainable land use policy, in particular when affecting extensive pastures and meadows in alpine landscapes.
机译：Mountain AgroeCosystems向社会提供必要的生态系统服务，但易于气候变化以及社会经济压力，使多功能土地系统越来越越来越庞大的可持续山地土地利用政策。 Agroforestry，采用作物和/或牲畜的木质植被组合，预计将同时增加供应和调节生态系统服务，但有关折衷的知识差距特别是在温带工业化和高山地区。在这里，我们量化了2020年至2050年的奥地利长期社会生态学研究区域Eisenwurzen的假设的农业遗产实施的地上碳（c）动态。我们开发三个土地使用场景，以区分常规农业的常规农业实施，从三种不同模型（产量安全，席麦片，迈阿密）的资本整合，并推进社会生态指标框架人类拨款净初级生产（HANPP），以评估生物质拨款和碳封存之间的权衡。结果表明，农林遗料强烈降低了汉普，因为生物量收获量高达-47％，实际净初级产量的同时增加至多31％，常年生物质含量高达3.4吨C ha（-1）yr（-1）。这表明，艾森维森中对农林素的假设转变缓解了来自人诱导的压力的农业体系，但导致生物质拨料和碳封存之间的显着折扣。因此，我们得出结论，虽然收获损失抑制了大规模实施的大规模实施，但农业剧为可持续土地利用政策的宝贵补充，特别是在影响高山景观中的广泛牧场和草地时。

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