Common bean (Phaseolus vulgaris) cultivation delivers income to farmers and nutrition to consumers in sub-Saharan Africa. With a growing population and land scarcity, there will be greater pressure to intensify common bean and other crops in the region. However, high temperatures and increased drought may reduce common bean yields in Africa. Climate change impacts on climbing beans are not yet clear. Therefore, the objective of this study was to evaluate the expected impact of climate change on suitability for climbing bean cultivation. The study identifies areas suitable to cultivate climbing beans in sub-Saharan Africa, taking into account the present climate as well as the predicted future climate. The analysis compares and evaluates the performance of two ecological niche models—Ecocrop and MaxEnt—under future climatic conditions, according to global circulation models of the last Intergovernmental Panel on Climate Change (IPCC) report. The Ecocrop model results showed a wide common bean distribution in comparison with those of MaxEnt, which showed a better approximation to the current distribution of climbing beans. The MaxEnt model performed well as judged by validation statistics and comparison with climbing bean production data. Overall, the models project climate change to decrease the suitability of climbing beans in Africa. The results suggest that rising temperatures and variable rainfall will most severely affect bean production in countries of southern Africa such as Zambia, Zimbabwe, Malawi, and Mozambique. In other parts of the tropics, climbing bean cultivation may suffer rising temperatures and more variable rainfall at higher latitudes, as opposed to areas near the equator. The study suggests where agricultural specialists can promote climbing beans in Africa and other regions of the world, where they are highly suitable and not yet widely cultivated. Researchers can improve studies such as this one for beans and other crops by developing more detailed calibration and validation data sets for modeling efforts.

普通豆（菜豆））种植可为撒哈拉以南非洲的农民带来收入，并为消费者提供营养。随着人口的增加和土地的稀缺，将有更大的压力来加强该地区的普通豆类和其他农作物。但是，高温和干旱加剧可能会降低非洲普通豆的单产。气候变化对攀缘豆的影响尚不清楚。因此，本研究的目的是评估气候变化对攀缘豆栽培适应性的预期影响。该研究考虑了目前的气候以及预计的未来气候，确定了撒哈拉以南非洲适合种植攀缘豆的地区。该分析比较和评估了两种生态位模型（Ecocrop和MaxEnt）在未来气候条件下的性能，根据上一次政府间气候变化专门委员会（IPCC）报告的全球流通模型。与MaxEnt相比，Ecocrop模型结果显示普通豆分布较宽，MaxEnt与攀爬豆的当前分布表现出更好的近似值。通过验证统计数据以及与攀缘豆生产数据的比较判断，MaxEnt模型表现良好。总体而言，这些模型预测气候变化将降低非洲攀缘豆的适宜性。结果表明，气温升高和降雨量变化将最严重影响南部非洲国家（如赞比亚，津巴布韦，马拉维和莫桑比克）的豆类生产。在热带其他地区，攀缘豆种植可能会在较高的纬度上遭受气温上升和降雨变化的影响，相对于赤道附近的区域 这项研究提出了农业专家在非洲和世界其他地区可以推广攀缘豆的地方，这些地方高度适合但尚未广泛种植。研究人员可以通过开发更详细的校准和验证数据集以进行建模工作，从而改善针对豆类和其他农作物的研究。