Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1088/1748-9326/aac4b1 |
Changes in rainfed and irrigated crop yield response to climate in the western US | |
Li, X.; Troy, T. J. | |
2018-06-01 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS
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ISSN | 1748-9326 |
出版年 | 2018 |
卷号 | 13期号:6 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | As the global population increases and the climate changes, ensuring a secure food supply is increasingly important. One strategy is irrigation, which allows for crops to be grown outside their optimal climate growing regions and which buffers against climate variability. Although irrigation is a positive climate adaptation mechanism for agriculture, it has a potentially negative effect on water resources as it can lead to groundwater depletion and diminished surface water supplies. This study quantifies how crop yields are affected by climate variability and extremes and the impact of irrigation on crop yield increases under various growing-season climate conditions. To do this, we use historical climate data and county-level rainfed and irrigated crop yields for maize, soybean, winter and spring wheat over the US to analyze the relationship between climate, crop yields, and irrigation. We find that there are optimal climates, specific to each crop, where irrigation provides a benefit and other conditions where irrigation proves to have marginal, if any, benefits. Furthermore, the relationship between crop yields and climate has changed over the last decades, with a changing sensitivity in the relationship of soybean and winter wheat yields to certain climate variables, like crop reference evapotranspiration. These two conclusions have important implications for agricultural and water resource system planning, as it implies there are more optimal climate conditions where irrigation is particularly productive and regions where irrigation should be reconsidered as there is not a significant agricultural benefit and the water could be used more productively. |
英文关键词 | crop yield climate variability irrigation |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000434985200002 |
WOS关键词 | POTENTIAL IMPACT ; FOOD SECURITY ; UNITED-STATES ; WATER ; SOIL ; TEMPERATURE ; MAIZE ; INVESTMENTS ; ADAPTATION ; DISASTERS |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
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/14879 |
专题 | 气候变化 |
作者单位 | Lehigh Univ, Dept Civil & Environm Engn, STEPS 9A,1W Packer Ave, Bethlehem, PA 18015 USA |
推荐引用方式 GB/T 7714 | Li, X.,Troy, T. J.. Changes in rainfed and irrigated crop yield response to climate in the western US[J]. ENVIRONMENTAL RESEARCH LETTERS,2018,13(6). |
APA | Li, X.,&Troy, T. J..(2018).Changes in rainfed and irrigated crop yield response to climate in the western US.ENVIRONMENTAL RESEARCH LETTERS,13(6). |
MLA | Li, X.,et al."Changes in rainfed and irrigated crop yield response to climate in the western US".ENVIRONMENTAL RESEARCH LETTERS 13.6(2018). |
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