Kellner O, Niyogi D
Departments of Earth, Atmospheric, and Planetary Sciences
Departments of Earth, Atmospheric, and Planetary Sciences Agronomy: Crop, Soils, and Environmental Science, Purdue University, West Lafayette, IN 47907.
J Anim Sci. 2014 Jul;92(7):2811-22. doi: 10.2527/jas.2013-7496. Epub 2014 Jun 3.
Weather and climate events and agronomic enterprise are coupled via crop phenology and yield, which is temperature and precipitation dependent. Additional coupling between weather and climate and agronomic enterprise occurs through agricultural practices such as tillage, irrigation, erosion, livestock management, and forage. Thus, the relationship between precipitation, temperature, and yield is coupled to the relationship between temperature, precipitation, and drought. Unraveling the different meteorological and climatological patterns by comparing different growing seasons provides insight into how drought conditions develop and what agricultural producers can do to mitigate and adapt to drought conditions. The 2012 drought in the United States greatly impacted the agricultural sector of the economy. With comparable severity and spatial extent of the droughts of the 1930s, 1950s, and 1980s, the 2012 drought impacted much of the U.S. crop and livestock producers via decreased forage and feed. This brief summary of drought impacts to agricultural production systems includes 1) the basics of drought; 2) the meteorology and climatology involved in forecasting, predicting, and monitoring drought with attribution of the 2012 drought explored in detail; and 3) comparative analysis completed between the 2011 and 2012 growing season. This synthesis highlights the complex nature of drought in agriculture production systems as producers prepare for future climate variability.
天气和气候事件与农业企业通过作物物候和产量相互关联,而作物物候和产量取决于温度和降水。天气和气候与农业企业之间的额外关联还通过诸如耕作、灌溉、土壤侵蚀、畜牧管理和草料等农业实践产生。因此,降水、温度与产量之间的关系与温度、降水和干旱之间的关系相互关联。通过比较不同生长季节来解析不同的气象和气候模式,有助于深入了解干旱状况是如何形成的,以及农业生产者可以采取哪些措施来减轻干旱影响并适应干旱状况。2012年美国的干旱对农业经济部门造成了极大影响。与20世纪30年代、50年代和80年代的干旱具有相当的严重程度和空间范围,2012年的干旱通过减少草料和饲料供应,影响了美国大部分作物和畜牧生产者。这份关于干旱对农业生产系统影响的简要概述包括:1)干旱的基本情况;2)预测、预报和监测干旱所涉及的气象学和气候学,并详细探讨了2012年干旱的成因;3)对2011年和2012年生长季节进行的比较分析。随着生产者为未来的气候变化做准备,这一综合分析凸显了农业生产系统中干旱的复杂本质。