What is the impact of afforestation on global warming?

Afforestation rightGlobal warmingImpact: Forests have good water storage effects, forests have mitigation effectsGlobal warminggood results,and has the ability to block sandstorms.

The function of maintaining water and soil and changing the low air flow. <>

We can think of the forest as a small reservoir, which is in natureWater cycleplays an important role. Trees can effectively regulate the climate. The reason why trees are able to regulate the climate is that when sunlight shines,CanopySome light sources are lost, which lowers the surface temperature and reduces water loss.

Creating habitats for living things is the home of animal life. Due to global warming, severe soil erosion, land desertification, and human over-deforestation have all destroyed the living environment of animals, which will also bring many species to the brink of extinction, thus making global warming even more serious. Therefore, afforestation can provide a new home for animals and slow down global warming.

Afforestation is a productive activity that creates or renews forests. It is a fundamental part of forest cultivation. Planting trees is beneficial for future generations, "ancestors left shade trees so that future generations can enjoy the cool air."

If the planting area is large, it can form a forest and forest environment in the future, which is called afforestation. If the area is too small to form a forest and forest environment in the future, it is called tree planting. The basic measures of afforestation are:

Suitable land and suitable trees, careful land preparation, good seeds and strong seedlings, proper dense planting, tending and protection, tool modification and possible irrigation and fertilization. Afforestation can provide many useful things to humans. Many fruits and medicinal herbs are forest products; Tea, rubber, and new carbon are all contributions from trees.

The use of the forest is really great. Afforestation has played a role in changing the global climate and has also reduced emissions indirectly. The cost of afforestation is relatively low, so we must pay attention to afforestation.

In view of some problems caused by global warming, a scientific and reasonable afforestation method is proposed. Trees play an important role in global warming, and the development of countries around the world has destroyed the environment to a large extent. In recent years, the phenomenon of global warming has been the focus of attention.

Global warming is causing sea levels to rise.

Affect the lives of animals and humans.

The cause of global warming is that there is too much carbon dioxide in the air, and afforestation will increase more trees for photosynthesis, absorb carbon dioxide and release fresh oxygen, effectively reducing the global warming effect.

Afforestation will only play a good role in the global warming trend, slowing down the rate of warming, preventing soil erosion, and normalizing the earth's environment.

Planting trees can have a mitigating effect on climate warming, increase oxygen, and better protect groundwater, so this is a big way to alleviate climate overheating.

To put it simply, afforestation can effectively solve the global emission of carbon dioxide, thereby releasing a large amount of oxygen and improving air quality, thereby slowing down global warming

It's a pity that afforestation can never catch up with indiscriminate deforestation, and the result is that human beings shed their last tears.

Mountains and seas and flower fields come to your problem? Global warming is a global problem due to the overexploitation of mines and forests.

It is the original harmonious home that is getting worse and worse, we all know that the snow-capped mountains of the Himalayas melt a lot every year, human life and consumption are active every day, and they also produce heat, including automobiles, corporate emissions, resulting in an increase in the thermal effect on the ground, making global warming, which is terrible, if the earth continues to warm, it may lead to the disappearance of some species, and the intensification of tropical storms, so is there a way to curb and delay it, so if you want to restore global warming, you really need to plant a lot of trees and vegetation, and restore the vegetation temperature naturally, So we all take action to plant trees for the benefit of future generations, and if everyone in the world plants the first tree every year, then we can delay and change the warming of the earth.

Let's have a lot of food!

People need to eat.

Climate change cannot be changed, and it takes action from all over the world to do it, and everything else is in vain.

Stop developing, or the rich stop developing!

Protecting the environment is the responsibility of the rich!

To check the climate history, what was the climate of Kunlun in the first place? What was the climate during the Mengma elephant period? Why is it glacial again, drought again? Do you think you're a human being? Did you make the glacier? Ridiculous! What a head!

It's a bit useful, but it doesn't solve the fundamental problem.

There are too many people on the earth, and the amount of greenhouse gases produced by the excessive life and production of too many people is too great, which is beyond the capacity of our ecological environment!

The Earth is seriously overloaded!

According to the Associated Press on July 4, Swiss scientists say there is also plenty of room in the world to plant ridges and collapse trees. They said in the July 4 issue of the American journal Science that there would be enough space to plant new trees, up to 9 million square kilometers, even if the existing urban and farmland areas were maintained. That's roughly the size of the United States.

According to the study, these new trees can absorb nearly 750 billion tons of carbon dioxide from the atmosphere over a period of decades, contributing to the greenhouse effect. This is roughly equivalent to the carbon pollution emitted by humans over the past 25 years.

of the authors of the study.

Thomas Crowther, a climate change ecologist at ETH Zurich, said that "this is the cheapest solution to climate change to date" and the most effective.

According to the report, the six countries with the largest space for new tree planting are Russia, the United States, Canada, Australia, Brazil and China.

Prior to the study, Crowther believed that there were more effective ways to combat climate change than to reduce emissions, such as shifting from meat to vegetarianism. But he said afforestation is much more effective because trees absorb a lot of carbon dioxide from the air.

Thomas Lovejoy, a conservation biologist at George Mason University in the United States, called this "good news" because planting trees can also help halt biodiversity loss.

Crowther stressed that the world still needs to wean itself off burning oil, coal and natural gas, which are the main causes of global warming. Planting trees is not a substitute.

"None of this will work without emissions reductions," he said. ”

While many organizations have already started to act, it's unrealistic to believe that there will be a sudden global reforestation boom, Crowther said.

"This is undoubtedly a huge challenge, on a scale comparable to climate change," he said. ”

He noted that as the planet warms, especially in the tropics, it dries out, tree vegetation is disappearing.

The researchers used Google Earth to see which areas could be planted with more trees and leave room for both people and crops. Jean-François Bastin, the study's lead author, estimates that there is still room to plant at least 1 trillion trees, or trillions.

According to Crowther's earlier findings, this builds on the 3 trillion trees that already exist on Earth.

Chris Field, an environmental scientist at Stanford University in the United States, said the calculations in the study were reasonable. But in an email, he said: "Whether it is feasible to restore so many forests is a much harder question." ”

According to foreign media reports on July 16, with the continuous intensification of global climate change, all kinds of crops have been affected to varying degrees, and the number of some fish and animals may also be greatly reduced. In the future, some beloved foods and beverages may disappear from the human table.

According to reports, the area of land suitable for growing coffee could be halved globally by 2050 due to global warming. By 2080, all wild varieties of coffee are expected to be extinct. It is understood that Tanzania, as one of the world's major exporters of coffee, has halved its coffee production in the past 50 years.

At the same time, the report mentioned that due to the high requirements for the growth environment of cocoa beans, the raw material for making chocolate, after 2060, Ghana and Côte d'Ivoire, which contribute to two-thirds of the world's cocoa exports, will face the possibility of an average temperature rise of 2 degrees. And this will directly lead to the fact that there will be no more high-quality and inexpensive chocolates on the market. Climate change has forced growers in Indonesia and Africa to switch from growing cocoa to other crops, such as palm and rubber trees.

And in the southwest of France, rising temperatures have caused the grapes to become too sweet, putting the 600-year-old brandy industry in crisis. Similarly, whisky manufacturers in Scotch in the UK and beer producers in the US face a dilemma. Global warming is causing droughts and less freshwater**.

In the summer of 2018, many whisky distilleries were forced to close. And water scarcity and drought have caused beer producers to suffer a double whammy.

As an important starch for human beings, potatoes are therefore facing a severe test. Because potatoes grow below the surface, they are more affected by drought. According to the UK**, the 2018 summer was extremely hot, resulting in a quarter reduction in potato production.

In addition to various plants, fish and shellfish are also threatened by climate warming. The rising temperature of the oceans, which cover about 70% of the Earth's surface, is causing oxygen levels in seawater to drop, affecting fish survival. In addition, seawater absorbs more carbon dioxide, causing it to acidify and make shellfish more difficult to grow.

Statistics show that global fishing has fallen by 5 per cent, and fishermen's incomes are declining.

Global warming is a common challenge for humanity, and crop production is threatened by more frequent and intense extreme weather. Crops are susceptible to these changes, and yields drop as temperatures rise. Over the past five decades, droughts have often been accompanied by heat waves, with extreme heat reducing the average grain yield of countries around the world by 9-10 years, and losses are expected to continue to increase.

While responses to these issues vary, the nutritional value of C3 and legume food crops decreases as temperatures and carbon dioxide levels rise, another consequence of climate change. In response to climate change, people have even had to adjust their agricultural activities.

Over the past seven decades, China's rice production has gradually shifted northward due to the emergence of new arable land due to rising temperatures. Also due to climate change, corn farmers in the Midwest are adopting new farming practices, including crop diversification, agricultural intensification, and even abandoning corn cultivation. Pathogens and pests are the main causes of crop losses, with estimates of the global average loss of major crops ranging from to to.

How do diseases respond to climate warming? The main thing is the expansion of the pathogen niche. As the temperature rises, the pathogenic niche migrates to the poles, threatening crop yields on the one hand, although it also brings considerable economic significance, and on the other hand, it causes food safety problems.

For example, experimental and modelling studies have shown that changes in marginal temperature can lead to the occurrence of bacterial ear blight with significant negative effects even during the rice growing season. In the most likely climate scenario, i.e. rising temperatures within the next 100 years2, European maize could be contaminated with aflatoxins secreted by Aspergillus and contribute to food health problems.

Crops are an integral part of the plant biome, and it is a multifaceted system that includes the interaction of plants, the environment, and related biomes. In the context of the plant genome, plants experience multiple stresses at the same time, and their responses to stress combinations are complex and difficult. For example, plant diseases may intensify or lessen when occurring at the same time as heat stress.

Therefore, in order to protect food security, we must accept the complexity of rising temperatures and understand how plants can cope with both the positive and negative effects of abiotic and biotic stresses. Recently, Jan E., an authority on molecular biology of plant-pathogen interactions at The Ohio State UniversityProfessor Leach's review article "High temperature-induced plant disease susceptibility:" published in the journal Current Opinion in Plant Biology:

more than the sum of its parts", presenting several recent studies on plant-microbial interactions that aim to characterize host responses to monobiotic and combined biotic and abiotic stresses.

, the impact of sea level rise.

In the past 100 years, the sea level has risen by 14 4 cm, and in our country it has risen by 11 5 cmThe main reason for the rise in sea level is the thermal expansion of the seawater, which rises when the ocean warms. Global warming causes the melting of icebergs at the Earth's north and south poles, which is one of the main causes of sea level rise.

2. Effects on animals and plants.

Climate is the main determinant of the distribution of biological communities, and climate change can change the adaptability of different species in an area and the competitiveness of different populations within ecosystems. Plants and animals in nature, especially plant communities, may be doomed by adaptations that are unable to adapt to the rate of global warming. Past climate changes (e.g., ice ages) have caused the disappearance of many species, and future climates will cause some species to disappear in some areas, while human species benefit from warming, with increased habitat and fewer competitors and predators.

For example, in the 70s of the 20th century, its northernmost boundary line was on the Yellow Mountain, and Xuancheng City also tried to grow it, but in the winter, a heavy snowfall, the trees froze to death. But now the orange trees on our campus are growing very well. Another example is that the Chinese alligator only lives in a narrow area such as Xuancheng, Jingxian and Nanling, and if the northern boundary is moved north, the Chinese alligator may become extinct naturally.

This is from a local point of view in our province. Nationally speaking, China regards the 0-degree isotherm in January as the northern boundary of the subtropics, and this boundary is currently located in the Qinling-Huaihe area of China. The study found that the rising temperature will move this boundary north to the north of the Yellow River, and the winter temperatures in Xuzhou and Zhengzhou will be similar to those in Hangzhou and Wuhan today.

3. Impact on agriculture.

The distribution of temperature and precipitation throughout the year is a major factor in determining which crops to grow, and changes in temperature and temperature-induced precipitation will affect the yield of food crops and the type of crop distribution. Changes in climate have led to significant changes in the spatial (latitudinal) distribution of biozones and biomes. For example, the average temperature in the North Atlantic region in 800-1200 AD was 1 higher than it is now, making it possible to grow corn in Norway, but by 1500-1800 AD, there was a Xiaoice period in Western Europe, and the average temperature was only 1-2 lower than now, causing half of Norway's farms to abandon farming, and Iceland's agricultural activities almost completely stopped.

In addition to this, global warming will also exacerbate natural disasters such as high temperatures, heat waves, tropical storms, and tornadoes. As a result, the stability and distribution of world food production will change significantly as global temperatures rise.

4. Impact on human health.

Human health depends on a good ecological environment, and global warming will be a major factor in human health in the next century. Extreme heat will become a more frequent and widespread health problem for human beings in the next century, mainly reflected in increased morbidity and mortality, especially malaria, lymphadenofilariasis, schistosomiasis, hookworm disease, cholera, and brain.