Credit: VladisChern/Shutterstock.com

This blog discusses global warming and food security. The main content is to introduce their definitions and their relationships. It then briefly describes some of the effects of global warming on food security and how it should be faced.

By assessing the popularity of food security, the typical picture is that about two billion human beings in the world are malnourished. Addressing hunger is one of the most substantial challenges in the world; international warming can affect the world’s efforts to stop starvation due to the fact the influence of global warming on crop productiveness can have a vast have impact on meal supply.

Nearly a quarter of all children aged under five are stunted.GFS

What are global warming and food security, and what is the connection between them?

Food security means that anyone can get enough safe and nutritious food at all times to maintain their basic needs. However, food security faces many challenges in terms of production and consumption.

Global warming is a significant influence caused by climate change, which refers to the rising period of the average temperature of the Earth’s climate system. There are two reasons for global warming: large amounts of burning coal, natural gas, etc. produce many greenhouse gases; deliberately cutting down the original forest, so that the ability to absorb carbon dioxide is reduced. According to NASA’s future global temperature prediction based on current climate models, the global climate will continue to change in this century and beyond, mainly depending on greenhouse gas emissions.

Both climate warming and food insecurity are considered to be two significant global challenges facing humanity. Climate warming is also considered to be one of the biggest challenges to food security. Because it reduces the productivity of most food systems, the task of overcoming food security becomes even more daunting.

Climatic shocks associated to climate change adversely affect local production yields.GFS

What problems will global warming bring to food security?

The effects of global warming on natural systems are diverse. In particular, the impact of temperature and rainfall on agricultural systems. First, the increase in temperature caused by climate warming will increase the demand for water for crops. At the same time, the soil moisture is insufficient, the water balance of crops is destroyed, and production or crop failure is caused, which leads to food problems and even famine. For example, in Pakistan, and amplify in temperature at 2°c resulted in a 12% drop in wheat production.

Secondly, abnormal rainfall can lead to an increase in the frequency of extreme weather. For example, excessive rainfall caused floods, surface runoff cannot be eliminated in time, and water accumulation in farmland exceeds the ability of crops to withstand flooding, resulting in reduced agricultural production. This is not only an impact on food production but also causes soil erosion, mudslides, and other disasters in the mountains. The report estimates that the hazard of these kinds of severe weather events hitting more than one principal breadbasket regions of the world at the identical time may want to triple with the aid of 2040. This results in a loss of yield that is channeled downstream with the aid of market and policy responses into meals price spikes, and in some cases civil unrest.¹

At the same time, food prices are also a factor in food security instability. Global warming has also greatly affected the destruction of ecosystems, soils and water resources, and the production and quality of food. The grain production was reduced, but the demand remained unchanged, leading to a rise in food prices. For example, Australia’s horrific weather has affected agricultural production and food prices, and in 2005-2007, Australia’s vegetable expenses rose by 33%.

The current situation of food security and global warming

Many countries are currently facing the double burden of hunger and malnutrition, and currently, one-third of people suffer from different forms of malnutrition. At the same time, about 795 million people are facing hunger. Nearly a quarter of children under the age of five are stunted. The current population growth means that more people need to be fed. Considering the projected growth of the world’s population, in the next 35 years, we need to continue to change people’s diets and need more food than ever before.²

Since the end of the 19th century, the average temperature of the Earth’s surface has risen by about 1.62 degrees Fahrenheit (0.9 degrees Celsius). This change is mainly caused by increasing carbon dioxide and other substances that are artificially released into the atmosphere. The global climate is expected to continue to change in this century and beyond. The extent of climate change in the coming decades will depend primarily on global greenhouse gas emissions and the sensitivity of the Earth’s climate to these emissions.

A corn field damaged by storm – an example of extreme weather disrupting food production.GFS

How to face this dilemma

In terms of climate, The United Nations Framework Convention on Climate Change negotiations in Cancun identified a target for an average temperature increase of no more than 2 ° C, but as time goes by, the possibility of achieving this goal is decreasing.

There are considerable uncertainties in climate change. The impact of climate warming is global. Countries should take measures to reduce greenhouse gas emissions and reduce future climate risks. For example, research on improving energy utilization technologies and energy efficiency, actively developing and utilizing new energy sources, strengthening international cooperation, and enhancing people’s awareness of environmental protection, planting trees, and forests to protect existing virgin forests.

In terms of food security, first, improve the ability of food systems to adapt to the climate. Scientists have also proposed that the use of increased carbon dioxide concentrations to increase production can be used to solve future food security problems. In some cold regions, warming is beneficial to agricultural production in some areas. For example, in recent decades, the temperature in Northeast China has increased dramatically, the area planted with rice has been expanding, the cold damage has been reduced, and yields have increased.

Furthermore, the frequency of extreme events is likely to increase, so it is necessary to promote the diversity of agriculture. The animals and plants we use as food contain a large amount of genetic diversity, and we can screen the drought-tolerant and tolerant genes of different crops. It is possible to discover varieties that can be utilized in the future and to develop diversification and creation.

Finally, forecast the weather to farmers so that farmers can know the weather changes and pests and diseases promptly so that they can better manage the farm. Earth warming makes the climate more variable, allowing farmers to change the time they spend growing crops to adapt to this change.

credit:http://www.ifpri.org/topic/topics

What is the future…

There is no doubt that the impact of global warming on food safety is enormous. It has a significant effect on the production, production, and price of food. At present, people cannot solve a series of environmental problems such as global warming, but they can use data to measure, analyze, and formulate some guidelines. Adjust production patterns and increase production from agricultural production methods and structures. It is thereby alleviating the pressure of climate change on food safety.

Nowadays, food is produced all over the world. This food is enough to feed our current population, but there are still many people who do not have enough food. This is not just the impact of climate, but the uneven distribution of these foods. The number of refugee camps is still increasing. The problem of hunger has not been well resolved. There is still a lot of work to do. All in all, in the future, the issue of food security has a long way to go.

  1. Extreme weather and resilience of the global food system, Global Food Security Programme (2015).
  2. Foresight. The Future of Food and Farming (2011) Final Project Report. The Government Office for Science, London.