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首页> 美国政府科技报告 >Impacts of El Nino Southern Oscillation on the Global Yields of Major Crops.
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Impacts of El Nino Southern Oscillation on the Global Yields of Major Crops.

机译：厄尔尼诺南方涛动对主要农作物全球产量的影响。

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The monitoring and prediction of climate-induced variations in crop yields, production and export prices in major food-producing regions have become important to enable national governments in import-dependent countries to ensure supplies of affordable food for consumers. Although the El Nino/Southern Oscillation (ENSO) often affects seasonal temperature and precipitation, and thus crop yields in many regions, the overall impacts of ENSO on global yields are uncertain. Here we present a global map of the impacts of ENSO on the yields of major crops and quantify its impacts on their global-mean yield anomalies. Results show that El Nino likely improves the global-mean soybean yield by 2.15.4 but appears to change the yields of maize, rice and wheat by -4.3 to +0.8. The global-mean yields of all four crops during La Nina years tend to be below normal (-4.5 to 0.0). Our findings highlight the importance of ENSO to global crop production.

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