The Andean-Amazon foothills region, shaped by Andean moist forests and Amazon forests in southwestern Colombia, Napo province in Ecuador, and Ucayali Province and Napo Basin in Peru, provides local and global ecosystem services as food, water, world climate regulation, water purification, and carbon absorption. However, it faces major problems of land-use change that are exacerbated by climate change that affects these ecosystem services. For instance, conventional agriculture contribute to deforestation, soil degradation, and biodiversity loss, which might be further aggravated by climate change–induced droughts, thus reducing staple crop production and, consequently, food security. Cassava (Manihot esculenta Crantz), maize (Zea mays L.), and plantain (Musa paradisiaca L.) are major staple crops in the region. They play a key role for food security and local farmers’ income but are highly exposed to climate risks. This article aims to quantify the level of exposure to climate change (measured as climatic suitability) of these crops in the Andean-Amazon foothills by using the EcoCrop model by the 2030s, 2050s, and 2080s under Representative Concentration Pathway 2.6, 4.5, and 8.5 scenarios. EcoCrop results showed that, whereas cassava will not lose climatic suitability, maize will lose more than half of its current suitable area, and plantain will gain and lose area, which would affect local food security. Globally, these results are important in highlighting adaptive and cost-effective strategies in agriculture and suggest that agricultural crop diversification may improve resilience by promoting the use of local crops varieties.

安第斯-亚马逊山麓地区由哥伦比亚西南部的安第斯湿润森林和亚马逊森林，厄瓜多尔的纳波省，秘鲁的乌卡亚里省和纳坡盆地形成，提供食物和水，世界气候调节，水净化等本地和全球生态系统服务和碳吸收。然而，它面临着土地利用变化的主要问题，气候变化加剧了土地利用变化，影响了这些生态系统的服务。例如，常规农业加剧了森林砍伐，土壤退化和生物多样性的丧失，而气候变化引发的干旱可能会进一步加剧这种恶化，从而降低主粮的产量，进而降低粮食安全。木薯（木薯Crantz），玉米（玉蜀黍大号。），和大蕉（天堂芭蕉L.）是该地区的主要主食作物。它们对粮食安全和当地农民的收入起着关键作用，但高度暴露于气候风险中。本文旨在通过使用代表性浓度途径2.6、4.5和8.5的2030年代，2050年代和2080年代的EcoCrop模型来量化安第斯-亚马逊山麓地区这些作物在气候变化中的暴露水平（以气候适应性衡量）场景。EcoCrop结果表明，虽然木薯不会失去气候适应性，但玉米将失去其目前适宜面积的一半以上，而车前草将增加或减少面积，这将影响当地的粮食安全。在全球范围内