Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.2017796117 |
Potential for sustainable irrigation expansion in a 3 °C warmer climate | |
Lorenzo Rosa; Davide Danilo Chiarelli; Matteo Sangiorgio; Areidy Aracely Beltran-Peña; Maria Cristina Rulli; Paolo D’Odorico; Inez Fung | |
2020-11-09 | |
发表期刊 | Proceedings of the National Academy of Sciences |
出版年 | 2020 |
英文摘要 | Climate change is expected to affect crop production worldwide, particularly in rain-fed agricultural regions. It is still unknown how irrigation water needs will change in a warmer planet and where freshwater will be locally available to expand irrigation without depleting freshwater resources. Here, we identify the rain-fed cropping systems that hold the greatest potential for investment in irrigation expansion because water will likely be available to suffice irrigation water demand. Using projections of renewable water availability and irrigation water demand under warming scenarios, we identify target regions where irrigation expansion may sustain crop production under climate change. Our results also show that global rain-fed croplands hold significant potential for sustainable irrigation expansion and that different irrigation strategies have different irrigation expansion potentials. Under a 3 °C warming, we find that a soft-path irrigation expansion with small monthly water storage and deficit irrigation has the potential to expand irrigated land by 70 million hectares and feed 300 million more people globally. We also find that a hard-path irrigation expansion with large annual water storage can sustainably expand irrigation up to 350 million hectares, while producing food for 1.4 billion more people globally. By identifying where irrigation can be expanded under a warmer climate, this work may serve as a starting point for investigating socioeconomic factors of irrigation expansion and may guide future research and resources toward those agricultural communities and water management institutions that will most need to adapt to climate change. |
领域 | 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/304053 |
专题 | 资源环境科学 |
推荐引用方式 GB/T 7714 | Lorenzo Rosa,Davide Danilo Chiarelli,Matteo Sangiorgio,et al. Potential for sustainable irrigation expansion in a 3 °C warmer climate[J]. Proceedings of the National Academy of Sciences,2020. |
APA | Lorenzo Rosa.,Davide Danilo Chiarelli.,Matteo Sangiorgio.,Areidy Aracely Beltran-Peña.,Maria Cristina Rulli.,...&Inez Fung.(2020).Potential for sustainable irrigation expansion in a 3 °C warmer climate.Proceedings of the National Academy of Sciences. |
MLA | Lorenzo Rosa,et al."Potential for sustainable irrigation expansion in a 3 °C warmer climate".Proceedings of the National Academy of Sciences (2020). |
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