Department of Geography, Ludwig-Maximilians-Universität München, 80333, Munich, Germany.
Kiel Institute for the World Economy, 24105, Kiel, Germany.
Nat Commun. 2019 Jun 28;10(1):2844. doi: 10.1038/s41467-019-10775-z.
With rising demand for biomass, cropland expansion and intensification represent the main strategies to boost agricultural production, but are also major drivers of biodiversity decline. We investigate the consequences of attaining equal global production gains by 2030, either by cropland expansion or intensification, and analyse their impacts on agricultural markets and biodiversity. We find that both scenarios lead to lower crop prices across the world, even in regions where production decreases. Cropland expansion mostly affects biodiversity hotspots in Central and South America, while cropland intensification threatens biodiversity especially in Sub-Saharan Africa, India and China. Our results suggest that production gains will occur at the costs of biodiversity predominantly in developing tropical regions, while Europe and North America benefit from lower world market prices without putting their own biodiversity at risk. By identifying hotspots of potential future conflicts, we demonstrate where conservation prioritization is needed to balance agricultural production with conservation goals.
随着对生物质能需求的增长,耕地扩张和集约化成为提高农业产量的主要策略,但也是生物多样性减少的主要驱动因素。我们研究了到 2030 年通过耕地扩张或集约化实现全球产量同等增长的后果,并分析了它们对农业市场和生物多样性的影响。我们发现,这两种情景都会导致全球范围内的粮食价格下降,即使在产量下降的地区也是如此。耕地扩张主要影响中美洲和南美洲的生物多样性热点地区,而耕地集约化则特别威胁到撒哈拉以南非洲、印度和中国的生物多样性。我们的研究结果表明,产量的提高将主要以生物多样性为代价,主要发生在发展中热带地区,而欧洲和北美则受益于较低的世界市场价格,而不会使自身的生物多样性面临风险。通过确定未来潜在冲突的热点地区,我们展示了在平衡农业生产和保护目标方面需要优先保护的地方。