Energy Sustainability Research Institute, Faculty of Science and Engineering, University of Groningen, Nijenborgh 6, 9747 AG, Groningen, the Netherlands; Colombian Oil Palm Research Centre, Cenipalma, Bogotá, Colombia.
Department of Agricultural Economics, Purdue University, United States.
J Environ Manage. 2022 Feb 1;303:114137. doi: 10.1016/j.jenvman.2021.114137. Epub 2021 Nov 27.
Agricultural intensification is a key strategy to help meet increasing demand for food and bioenergy. It has the potential to reduce direct and indirect land use change (LUC) and associated environmental impacts while contributing to a favorable economic performance of the agriculture sector. We conduct an integral analysis of environmental and economic impacts of LUC from projected agricultural intensification and bioenergy production in the Orinoquia region in 2030. We compare three agricultural intensification scenarios (low, medium, high) and a reference scenario, which assumes a business-as-usual development of agricultural production. The results show that with current inefficient management or with only very little intensification between 26% and 93% of the existing natural vegetation areas will be converted to agricultural land to meet increasing food demand. This results in the loss of biodiversity by 53% and increased water consumption by 111%. In the medium and high scenarios, the intensification allows meeting increased food demand within current agricultural lands and even generating surplus land which can be used to produce bioenergy crops. This results in the reduction of biodiversity loss by 8-13% with medium and high levels of intensification compared to the situation in 2018. Also, a positive economic performance is observed, stemming primarily from intensification of cattle production and additional energy crop production. Despite increasing irrigation efficiency in more intensive production systems, the water demand for perennial crops and cattle production over the dry season increases significantly, thus sustainable management practices that target efficient water use are needed. Agricultural productivity improvements, particularly for cattle production, are crucial for reducing the pressure on natural areas from increasing demand for both food products and bioenergy. This implies targeted investments in the agricultural sector and integrated planning of land use. Our results showed that production intensification in the Orinoquia region is a mechanism that could reduce the pressure on natural land and its associated environmental and economic impacts.
农业集约化是满足日益增长的粮食和生物能源需求的关键战略。它有潜力减少直接和间接的土地利用变化(LUC)以及相关的环境影响,同时为农业部门的有利经济表现做出贡献。我们对 2030 年奥里诺科地区预计的农业集约化和生物能源生产所导致的土地利用变化的环境和经济影响进行了综合分析。我们比较了三种农业集约化情景(低、中、高)和一个参考情景,该情景假设农业生产照常发展。结果表明,在目前低效管理的情况下,或者在仅进行非常小的集约化的情况下,26%至 93%的现有自然植被区域将被转换为农业用地,以满足不断增长的粮食需求。这导致生物多样性损失 53%,用水量增加 111%。在中高情景下,集约化允许在现有农业土地内满足不断增长的粮食需求,甚至产生剩余土地,可以用于生产生物能源作物。这导致与 2018 年相比,生物多样性损失减少 8-13%,中高强度集约化。此外,还观察到了积极的经济表现,主要源于牛生产的集约化和额外的能源作物生产。尽管在更集约化的生产系统中灌溉效率提高,但多年生作物和牛在旱季的用水量显著增加,因此需要可持续的管理实践,以提高用水效率。农业生产力的提高,特别是牛生产的提高,对于减少对自然区域的压力至关重要,这种压力来自于对粮食产品和生物能源的需求不断增加。这意味着需要对农业部门进行有针对性的投资,并对土地利用进行综合规划。我们的结果表明,奥里诺科地区的生产集约化是一种可以减轻对自然土地及其相关环境和经济影响的压力的机制。