Global warming may increase crop yields in some places, but it will seriously reduce crop yields in others.
Colder countries may be able to grow warmer climate crops. However, much of Africa will become too hot and dry for the traditional crops that people rely on for food.
If global warming continues, then even countries like Canada, which will be fruitful for a time, will then become too hot to be productive.
A: There are three things that crops need more than anything else to produce the best yields. Those three things are warmth, water, and carbon dioxide. Let us examine each of these in turn.
Warmth, obviously, is in more abundance during global warming. In many areas that are now too cold to grow crops, higher temperatures will make it possible, thus greatly increasing the acreage available for growing crops. Much of this area has never been cultivated, and therefore has not been subjected to the depletion of nutrients that traditional cropland has seen, so, with fertilizers, these soils will be more fertile than those in traditional crop-growing areas. Meanwhile, in the traditional crop-growing areas, temperatures are also going up (but, it must be noted, not as much as in colder latitudes). Temperatures will get warm earlier and cold later, extending the growing season, which means higher yields. There is, however, some concern that temperatures will get TOO warm in traditional crop-growing areas. While it is true that, beyond a certain maximum temperature (around 90oF for most crops) higher temperatures do not help crop growth and development, neither do these excessive temperatures, in and of themselves, retard crop growth and development. It is only when these excessive temperatures occur simultaneously with a lack of water that crops are harmed. (And as you will learn in the next paragraph, lack of water will not be an issue.) As long as there is plenty of water, temperatures could soar to 120oF and crops would continue to grow and develop at the fastest possible rate. Also, because temperatures get warm earlier, crops can be planted earlier to take advantage of warmer late-winter temperatures, and could be harvested before the hottest part of the year. It is even conceivable that, with a warmer spring and a warmer fall, farmers could get TWO crops each year on the same acreage. By the way, small grains like wheat, oats, barley, and rye, are often planted in the fall and harvested long before the hottest part of summer. Even if high temperatures were harmful to crops, there is no conceivable way they could harm these small grains. So, we could, if we had to, limit production of corn, soybeans, and other "summer" crops to cooler latitudes, and grow the small grains in the warmer latitudes, during the fall, winter, and spring.
Water will also be more abundant under global warming conditions. Higher temperatures will result in more evaporation of water from oceans and other bodies of water. This puts more water vapor into the atmosphere. This in turn means more rainfall. And rainfall benefits crops. There is some concern that global warming will force a shift in weather patterns, causing long-term drought in some areas that historically had plenty of rainfall. But it cannot be denied that, under global warming conditions, total precipitation across the entire planet will increase. So some traditional crop-growing areas will dry up. Fine. The soils there will have a chance to recover from centuries of overcultivation, and be ready to go when the warming trend ends. Meanwhile, the areas that will be, for the first time, receiving enough warmth and rain to grow crops will more than make up for the loss of acreage. OR we could build a system of canals to transport water from those areas that get too much rainfall to those areas that don't get enough. Expensive? Yes. But not nearly as expensive as the measures we will have to enact to stop global warming.
Carbon dioxide is to plants like oxygen is to us. Plants need it to survive, and the more of it they have, the faster they will grow. Growers of greenhouse plants often inject carbon dioxide into their greenhouses, up to 3 times the normal atmospheric concentration, to aid in growth and development, and the results are unequivocably positive. Lack of carbon dioxide has been shown, time and time again, to be the number-one limiting factor in crop yields. To my knowledge, no one has ever discovered a level of carbon dioxide that is "too high" for plants. Now, excess carbon dioxide is, supposedly, the cause of global warming. So, if global warming continues, it must be because of increased carbon dioxide. And increased carbon dioxide is good for crop yields.
However, all that said... even if global warming is occurring, even if it continues, and even if we are causing it by burning fossil fuels, there is absolutely no way that it can be bad for crops. In fact, I believe that global warming, if it continues, will be the best thing to happen to crop yields since the invention of the mechanical harvester, and will cause the amount of arable land to increase well over any level ever seen. Taking both effects into account, I suspect that potential food production will DOUBLE.
A: It is difficult to predict the future, but in 2001 the United Nations InterGovernmental Panel on Climate Change (IPPC) issued a Report: Climate Change 2001: Working Group II: Impacts, Adaptation and Vulnerability(See the link below).
Here are some of the suggested impacts:
Global warming can cause famine by disrupting weather patterns, leading to more frequent and severe droughts or floods which can reduce crop yields. It can also increase temperatures, affecting the growth and productivity of certain crops in different regions. These factors combined can lead to food shortages and scarcity, ultimately contributing to famine.
The answer to that is to stop global warming which unfortunately may not be possible. Do environmentally friendly things to help. Recycle, drive a fuel efficient car or hybrid, and don't use aerosols. Those are just a few of the ways to help the environment.
Climate change can impact food security in multiple ways, such as through extreme weather events, changes in temperature and precipitation patterns, and impacts on crop yields. These factors can disrupt food production, increase food prices, and affect crop quality, ultimately leading to food scarcity and malnutrition. Here is a simplified diagram illustrating this relationship: Climate Change --> Extreme Weather Events, Temperature/Precipitation Changes --> Crop Yield Reduction, Food Price Increases, Food Scarcity, Malnutrition.
Terracing helps increase crop yields by preventing soil erosion, improving water retention, and creating more level planting surfaces. This allows for better distribution of water and nutrients to the crops, leading to improved growth and productivity.
Combustion (burning) of anything releases carbon dioxide, because just about everything contains large amounts of carbon. If what is burnt was recently grown, then it is only a minor problem, but when we burn fossil fuels (coal, oil and natural gas), we release carbon that has been hidden away for 300 million years. This extra carbon dioxide is causing global warming. Global warming is causing climate change, which will cause adverse effects to crops, changing rainfall patterns, raising temperatures, causing desertification, droughts and famine, and putting coastal croplands under sea water permanently.
With global warming it is really just shifting the climates, so it will benefit some wile devaluing other land areas as far as the farming value is concerned.
Yes, global warming can affect crops in several ways. Increased temperatures can alter growing seasons and shift suitable growing regions for crops. Extreme weather events, such as droughts, floods, and heatwaves, can also damage crops and reduce yields. Changes in precipitation patterns and increased pests and diseases due to warmer temperatures can further impact crop production.
Greater crop yields.
Yes. Predominantly yes as humanity has developed in our current stable climate, however small pockets of the world may benefit from increased crop yields some of the time such as the northern parts of Canada and Russia.
Global warming can cause famine by disrupting weather patterns, leading to more frequent and severe droughts or floods which can reduce crop yields. It can also increase temperatures, affecting the growth and productivity of certain crops in different regions. These factors combined can lead to food shortages and scarcity, ultimately contributing to famine.
Global warming can lead to shifts in temperature and precipitation patterns, which can affect the growing seasons of fruits and vegetables. Warmer temperatures could cause crops to ripen earlier or later than usual, impacting harvest times and possibly leading to changes in crop yields. Changes in weather patterns may also increase the risk of extreme events such as droughts or heavy rainfall, which can further impact fruit and vegetable production.
the major group of activities for improving crop yields can be classified as : .crop variety improvement .crop production improvement .crop protection management
Global warming or climate change involves more variation and unpredictability in the weather, making it a bit more difficult for farmers to judge when the best time would be to put the crops in, as well as how crops will grow during the growing season. There is more risk now for extreme drought or extreme moisture and less of anything in-between, and more storms pose threat for hail damage as well.
The hole in the ozone layer allows more ultraviolet (UV) radiation from the sun to reach the Earth's surface, contributing to global warming. Increased UV exposure can harm organisms, leading to skin cancer in humans, reduced crop yields, and harm to marine life. It is important to address this issue to protect the environment and human health.
Some potential benefits of global warming for farmers include longer growing seasons, increased crop yields in certain regions, and expanded opportunities to grow new types of crops. However, these benefits may be offset by negative effects such as more frequent and severe weather events, changes in pest and disease patterns, and water scarcity.
Higher yields = increased income.
Ozone in the troposphere can cause respiratory issues, worsen asthma, and irritate lung tissues. It can also harm plant life, crop yields, and ecosystems. Additionally, ozone is a greenhouse gas and contributes to global warming.