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Integrated assessment of climate change impacts on crop productivity and income of commercial maize farms in northeast South Africa
Food Security ( IF 5.6 ) Pub Date : 2020-04-24 , DOI: 10.1007/s12571-020-01023-0
Davide Cammarano , Roberto O. Valdivia , Yacob G. Beletse , Wiltrud Durand , Olivier Crespo , Weldemichael A. Tesfuhuney , Matthew R. Jones , Sue Walker , Thembeka N. Mpuisang , Charles Nhemachena , Alex C. Ruane , Carolyn Mutter , Cynthia Rosenzweig , John Antle

Agriculture in South Africa sustains about 70% of the region’s population for food, income and employment, playing an important role for food security and the local economy. The focus of the study was the commercial maize farms of the Free State Province given their importance in the National economy. The Regional Integrated Assessment (phase I) was implemented to assess climate change and adaptation that links climate, crops, economic data and tools developed by the Agricultural Model Intercomparison and Improvement Project (AgMIP). In this context, the “system” is defined as a whole of agronomic and socio-economic factors. Within that framework three core questions were being evaluated: (i) Impacts of climate change under current system; (ii) Impacts of climate change under future system; (iii) The role of adaptation under climate change and the future system. Maize production will decrease between 10% to 16% as a result of projected climate impacts. Also, current agricultural production systems are negatively affected by climate change with an increase in poverty rates between 2% to 3%. The projected adoption of the adapted technology would result in positive increased net returns and a decrease in poverty rate of between 12% and 22%. The results of this study show that implementing adaptation measures, including strategies indicated by the local stakeholders, will have positive impacts on the agricultural production systems and can contribute to support and inform climate change policy decision making such as the development of National Adaptation Plans.

中文翻译:

气候变化对南非东北部商品玉米农场作物生产力和收入影响的综合评估

南非的农业为该地区约 70% 的人口提供粮食、收入和就业,对粮食安全和当地经济发挥着重要作用。鉴于其在国民经济中的重要性,研究的重点是自由州省的商业玉米农场。实施区域综合评估(第一阶段)以评估气候变化和适应,将气候、作物、经济数据和农业模型比对和改进项目 (AgMIP) 开发的工具联系起来。在这种情况下,“系统”被定义为农艺和社会经济因素的整体。在该框架内,正在评估三个核心问题:(i) 当前系统下气候变化的影响;(ii) 未来系统下气候变化的影响;(iii) 适应在气候变化和未来系统下的作用。由于预计的气候影响,玉米产量将减少 10% 至 16%。此外,当前的农业生产系统受到气候变化的负面影响,贫困率增加了 2% 到 3%。预计采用适应技术将导致净回报增加,贫困率降低 12% 至 22%。本研究的结果表明,实施适应措施,包括当地利益相关者提出的战略,将对农业生产系统产生积极影响,并有助于支持和告知气候变化政策决策,例如制定国家适应计划。由于预计的气候影响,玉米产量将减少 10% 至 16%。此外,当前的农业生产系统受到气候变化的负面影响,贫困率增加了 2% 到 3%。预计采用适应技术将导致净回报增加,贫困率降低 12% 至 22%。本研究的结果表明,实施适应措施,包括当地利益相关者提出的战略,将对农业生产系统产生积极影响,并有助于支持和告知气候变化政策决策,例如制定国家适应计划。由于预计的气候影响,玉米产量将减少 10% 至 16%。此外,当前的农业生产系统受到气候变化的负面影响,贫困率增加了 2% 到 3%。预计采用适应技术将导致净回报增加,贫困率降低 12% 至 22%。这项研究的结果表明,实施适应措施,包括当地利益相关者提出的战略,将对农业生产系统产生积极影响,并有助于支持和告知气候变化政策决策,例如制定国家适应计划。当前的农业生产系统受到气候变化的负面影响,贫困率增加了 2% 至 3%。预计采用适应技术将导致净回报增加,贫困率降低 12% 至 22%。本研究的结果表明,实施适应措施,包括当地利益相关者提出的战略,将对农业生产系统产生积极影响,并有助于支持和告知气候变化政策决策,例如制定国家适应计划。当前的农业生产系统受到气候变化的负面影响,贫困率增加了 2% 至 3%。预计采用适应技术将导致净回报增加,贫困率下降 12% 至 22%。本研究的结果表明,实施适应措施,包括当地利益相关者提出的战略,将对农业生产系统产生积极影响,并有助于支持和告知气候变化政策决策,例如制定国家适应计划。
更新日期:2020-04-24
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