Change On Food Production Environmental Sciences Essay

Change On Food Production Environmental Sciences Essay Agriculture is highly dependent on specific climate conditions. Moderate warming and appropriate carbon dioxide in the atmosphere may help plants to grow faster. But more severe climate change such as global warming, floods, drought, and hail may reduce yields. According the survey, from 1981 to 1990, the average global temperature has increased 0.48  °C than 100 years ago. If greenhouse gas emissions continue the warming will also continue, with temperatures projected to increase by 1.4  °C to 5.8  °C between 1990 and 2100. (Richardson et al. 2011) Increases in temperature and carbon dioxide (CO2) can be beneficial for some crops in some places. But to realize these benefits, nutrient levels, soil moisture, water availability, and other conditions must also be met. Higher CO2 levels can increase yields. The yields for some crops, like wheat and soybeans, could increase by 30% or more under a doubling of CO2 concentrations. The yields for other crops, such as corn, exhibit a m uch smaller response (less than 10% increase). However, some factors may counteract these potential increases in yield. For example, if temperature exceeds a crop’s optimal level or if sufficient water and nutrients are not available, yield increases may be reduced or reversed. Crops grown in the United States are critical for the food supply here and around the world. U.S. exports supply more than 30% of all wheat, corn, and rice on the global market. Changes in temperature, amount of carbon dioxide (CO2), and the frequency and intensity of extreme weather could have significant impacts on crop yields. Warmer temperatures may make many crops grow more quickly, but warmer temperatures could also reduce yields. Crops tend to grow faster in warmer conditions. However, for some crops (such as grains), faster growth reduces the amount of time that seeds have to grow and mature. This can reduce yields (i.e., the amount of crop produced from a given amount of land). (EPA 2012) All the problem need to have fast and effective ways to be solve well. In the text will talk other country use what solution to decrease the damage and to protect the crop. Global warming has a serious impact on agricultural production, according to the Consultative Group on International Agricultural Research (CGIAR) research report pointed out the vulnerability of agriculture to climate warming performance of consumption in the world’s largest of several major varieties of grain, wheat, cereal, corn and rice are particularly sensitive to high temperature, decreased production will cause food shortages. (CGIAR 2012) World Agro forestry Centre chief ecologist Dr. Lewis à ¢Ã¢â€š ¬Ã‚ ¢ Will Carter report pointed out that the impact of climate change on agriculture in developing countries, for example, China’s agricultural production, the main crops are rice, wheat and corn, warming irrigated and rain-fed spring wheat production decreased by 17.7% and 31.4%, respectively, th e average corn production will cut 3% -7%; (Chiras 2012) warming will accelerate microbial decomposition of soil organic matter, resulting in the decline of soil fertility, implementation of the pesticide will increase and extend the crop growing season, so that not only increase agricultural costs, and affect the safety of the food. (Cline 2007)