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| DOI | 10.1016/j.eja.2024.127137 |
| Climate change impact and adaptation of rainfed cereal crops in sub-Saharan Africa | |
| 发表日期 | 2024 |
| ISSN | 1161-0301 |
| EISSN | 1873-7331 |
| 起始页码 | 155 |
| 卷号 | 155 |
| 英文摘要 | Sub-Saharan Africa's (SSA) demand for cereals is projected to more than double by 2050. Climate change is generally assumed to add to the future challenges of the needed productivity increase. This study aimed to assess (i) the potential climate change impact on four key rainfed cereals (maize, millet, sorghum and wheat) in ten SSA countries namely Burkina Faso, Ghana, Mali, Niger, Nigeria, Ethiopia, Kenya, Tanzania, Uganda, and Zambia using local data and national expertise, and (ii) the potential of cultivar adaptation to climate change for the four crops. We assessed effects on rainfed potential cereal yields per crop and aggregated these to regional level in West (WA), East and Southern Africa (ESA). We made use of a rigorous agronomic dataset for 120 locations in the ten countries and performed simulations of rainfed potential yield (Yw) using bias -corrected climate data from five GCMs, three time periods (1995-2014 as baseline, 2040-2059, and 2080-2099) and two scenarios (SSP3-7.0 as business as usual and SSP5-8.5 as pessimistic). We tested whether better adapted cultivars (taken from the pool of cultivars currently employed in the ten countries) could compensate for climate change. Results showed that climate change decreased aggregated Yw of cereals by around 6% in ESA by 2050, whereas projected impacts in WA were not significant. In 2090, however, the projected impact of climate change in both WA (-24%) and ESA (-9%). was significant. Cultivar adaptation partially compensated the negative impact of climate change. With the adaptation approach, 87% and 82% of potential production in ESA was estimated to occur with higher average Yw and lower variability in, respectively, 2050 and 2090, compared to the baseline period. In WA 67% and 43% of the potential production was estimated to experience such positive effects in 2050 and 2090, respectively. These results highlight remaining adaptation challenges for 13% (2050) and 18% (2090) in ESA and 33% (2050) and 57% (2090) in WA for potential production. In the context of the large yield gaps in SSA, this is likely to further increase challenges to meet cereal self-sufficiency for SSA, especially in WA. |
| 英文关键词 | Cultivar; Crop modeling; Maturity class; Yield variability |
| 语种 | 英语 |
| WOS研究方向 | Agriculture |
| WOS类目 | Agronomy |
| WOS记录号 | WOS:001193977900001 |
| 来源期刊 | EUROPEAN JOURNAL OF AGRONOMY
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/286288 |
| 作者单位 | Wageningen University & Research; Alliance; Bioversity International; University of Ghana; University of Zimbabwe; University of Nebraska System; University of Nebraska Lincoln; CGIAR; International Maize & Wheat Improvement Center (CIMMYT); Swedish University of Agricultural Sciences |
| 推荐引用方式 GB/T 7714 | . Climate change impact and adaptation of rainfed cereal crops in sub-Saharan Africa[J],2024,155. |
| APA | (2024).Climate change impact and adaptation of rainfed cereal crops in sub-Saharan Africa.EUROPEAN JOURNAL OF AGRONOMY,155. |
| MLA | "Climate change impact and adaptation of rainfed cereal crops in sub-Saharan Africa".EUROPEAN JOURNAL OF AGRONOMY 155(2024). |
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