代写范文

留学资讯

写作技巧

论文代写专题

服务承诺

资金托管
原创保证
实力保障
24小时客服
使命必达

51Due提供Essay,Paper,Report,Assignment等学科作业的代写与辅导,同时涵盖Personal Statement,转学申请等留学文书代写。

51Due将让你达成学业目标
51Due将让你达成学业目标
51Due将让你达成学业目标
51Due将让你达成学业目标

私人订制你的未来职场 世界名企,高端行业岗位等 在新的起点上实现更高水平的发展

积累工作经验
多元化文化交流
专业实操技能
建立人际资源圈

How to Save Agriculture from Climate Change

2021-06-04 来源: 51Due教员组 类别: Essay范文

51Due教员组今天给各位留学生带来一篇纯原创气候代写范文,讲的是如何使农业免受气候变化的影响,希望这篇可以帮助到各位留学生,同时需要代写也可以直接联系我们51Due客服vxvxJenny_dynh)进行咨询。

 

How to Save Agriculture from Climate Change

 

Global warming has a significant impact on the natural environment and the living environment of mankind. It also has a long-term impact on ecology, economic and social development (Brown, 2010). In particular, the impacts on agriculture, animals, ecosystems, and water resources are the most relevant to humans. The agroecosystem is most restricted by climate and weather. Global warming will directly affect the ecological environment of crop and the change in yield, which will affect the world's food production and food security (Brown, 2010). This essay aims to stress on the seriousness of the global warming influences on agriculture. It argues that the solution to the agricultural disasters is to track and take full advantage of the laws of agriculture and climate change. By seeking benefits and avoiding disadvantages, the negative influences on agricultural production can be minimized.

 

Global warming is mainly caused by human activities in the following three aspects: First, the emission of greenhouse gases such as CO2 during the combustion of fossil fuels increases the concentrations of greenhouse gases in the atmosphere. Second, after greenhouse gases such as CH4, CO2, N2O, PFC, HFC, and SF6 emitted from agriculture and industrial activities enter the atmosphere, they will intensify global warming through the greenhouse effect (Brown, 2010). Thirdly, the sources and sinks of greenhouse gases and surface albedo caused by land use changes further affect climate change. The Fourth Assessment Report of IPCC (2007) shows that global warming has become an indisputable fact. The global average surface temperature over the past 100 years (1906-2005) increased by 0.74 degrees. In 2005, the global atmospheric carbon dioxide concentration was 379 mg / kg, the highest in 650,000 years (IPCC, 2007). Over the past centuries, most of the increases in global average temperatures are likely to be caused by human activities, with more than 90% probability). High temperature, heat waves and heavy precipitation may increase the frequency of tropical cyclones (typhoons and hurricanes) may be strengthened.

 

Over the past 100 years, the average temperature at both poles has increased by the double of the average global temperature rise. The oceans have absorbed 80% of the heat entering the atmosphere. The increase in sea temperatures has led to the expansion of seawater and ultimately the rise of sea level. The increase in evaporation on the ocean surface has led to an increase in the average global rainfall. From the perspective of the overall global trend, rainfall in the mid-latitude region, the northern hemisphere subtropical regions, and the southern hemisphere have all increased (Brown, 2010). Precipitation is the main limiting factor of crop growth. Precipitation increases in the process of global warming. However, the variation of precipitation is different in different regions, and the impact of precipitation can be both positive and negative. As far as the global average is concerned, the increase of precipitation is positive for the development of crops. However, global warming will lead to surface runoff, droughts and floods. Water quality in some areas will change, thus exacerbating the instability of water resources in supply and demand.

 

The crop ecosystem is a human-controlled system with strong dependence on human intervention. Its self-regulation mechanism is very weak and is the main recipient and victim of global warming (Brown, 2010). The impact of global warming on crops has both advantages and disadvantages, and on the whole, it does more harm than good. It is predicted that by 2020, food production in East and South-East Asia will increase by 20%, while grain output in central and southern Asia will be reduced by 30% (IPCC, 2007). Climate change will increase the Northeast and Northwest China Food production in the plateau areas, while reducing the food production in eastern, central and southwestern regions. Reduced food production in southern Australia and the entire eastern New Zealand is expected. In northern Europe, climate change reduces the need for heat and increases food production, but it does more harm than good as climate change continues. Production in Latin America is expected to decline (IPCC, 2007). Overall, climate change will have a negative impact on the total amount of agricultural production globally. Adjustments must be made ahead of time, so that people can be prepared for the change.

 

It is important to make full use of agricultural and climate resources through adequate adjusting and planning. The cropping system and structure should be adjusted based on new agricultural development strategies to adapt to climate change. Agricultural development priorities, policies and guidelines should be established together with new agricultural technology. Increase in temperature and growth period after global warming is expected. The existing geographical boundary of different agricultural zones are expected to shift to the north in general due to the rising temperature (Karamouz, Zahmatkesh, & Ahmadi, 2013). With the expansion of agricultural zones, demand for water will increase. In the future, water will replace heat as the main limiting factor for the expansion of cropping. In this regard, it is necessary to develop new technologies that regulate irrigation and conserve water as much as possible. When using the GLAM crop model to study the response of crops to climate warming, it has been found that the negative effects of extreme high temperatures can be mitigated with proper irrigation (Vermeulen, et. al., 2012). This is of great realistic significance for the crops in the context of global warming.

 

Breeding new crop species with high stress resistance and ecological types suitable for different climate conditions is another solution. Through simulation experiments and field experiments, the ability of crops to withstand natural disasters can be enhanced. Climate change will place new demands on the variety characteristics of crops. The first is the stress resistance requirements of crops: high temperature, drought resistance, pest resistance, in response to the impact of global warming and changing soil content due to the rising sea level (University of Leeds, 2016). Secondly, the physiological requirements of crops are important: high photosynthetic efficiency and low respiratory consumption are preferred, so that even in the shortened growth period, crops can achieve high yield and quality. Epigenetics is considered an effective way to help crops adapt to changing, unstable, and unfavorable climate conditions (Levine, 2017). Therefore, more resilient annual and perennial species should be created so that the yield can be unaffected in the challenging context of global warming.

 

In conclusion, the threat of global warming on the vulnerable agriculture ecosystem is real. With added instabilities and uncertainties, the crop yield and agricultural production are expected to be negatively influenced by climate change. In response to the current situation of global warming and its impact on crops, practical countermeasure research is also more urgent. While the loss of global food production from climate change may be counterbalanced by technological advances, the inequality and unevenness among regions may be significant. Due to the complex ecosystem of crops, it is difficult to accurately simulate the response of crops to climate change. Future efforts should focus on developing a flexible and updated agricultural planning system, to minimize the negative influences of climate change. Irrigation is found to be the key factor to help crops survive climate change, and relevant technologies should be developed. Moreover, the creation new, more resilient crop species are important as well. With these countermeasures, human beings can be prepared for the agricultural challenges brought by climate change.


51due留学教育原创版权郑重声明:原创优秀代写范文源自编辑创作,未经官方许可,网站谢绝转载。对于侵权行为,未经同意的情况下,51Due有权追究法律责任。主要业务有essay代写assignment代写paper代写作业代写、论文代写服务。

51due为留学生提供最好的论文代写服务,亲们可以进入主页了解和获取更多代写范文提供论文代写服务,详情可以咨询我们的客服QQ:800020041。


上一篇:A Summary of “The Design of Et 下一篇:Pygmalion Effect