如果没有树会发生什么( 二)
2022-01-12 龟兔赛跑 4953

What would happen if there were no trees?


Adarsh Thakkar, Msc geology from K.S.K.V. Kachchh University
So suppose all the forests in the world disappeared,what would happen?
Well for starters the atmosphere would get depleted in oxygen and enriched in carbon dioxide
The habitat and nutrition source of herbivores will be destroyed
Herbivores dying due to starvation will lead to the ultimate death of carnivores
A lot of the soil would get washed away into the sea without the tree roots holding it
Our major source of wood will be destroyed(which is least of our worries)
Humans being the smartest will be the last to perish as they would find a way to survive but not for long. They would get extinct too.
Increase in carbon dioxide levels will lead to global warming
Global warming would lead to melting of glaciers and rise in the mean sea level all across the globe
It would lead to 99.9% of the species to get extinct but not all of it. Some anaerobic micro-organisms would survive and then adapt according to the conditions
The saddest part though……the Earth would no longer be the Blue-Green planet that we know today


Ville Kuosmanen, studied at University of St Andrews

Ville Kuosmanen,就读于圣安德鲁斯大学

It has been estimated that there are three trillion trees in the world.
[1] If we were to cut them down one per second, it would take us 94 638 years until all the trees were gone! But what if they all disappeared instantly? Just how different would the world be?
First of all, would we even live long enough to ask the question? As we all know, trees produce oxygen by photosynthesis, so a world without them would surely not sustain human life, would it?
Well, it turns out we’d probably be quite all right. Perhaps a bit surprisingly, 70% of the world’s oxygen is produced by the oceans.


[2] And while trees of all kind do make up a large share of the world flora, we’d still have bushes, grasses and many other kinds of plants on the ground to help us breathe. Such a change would definitely have a catastrophic impact on all ecosystems of the world, but humans are adaptive creatures and I’m sure we’d make though somehow.
The loss of trees would, however, hit the world economy hard. Wood is still used in some form in almost every industry, such as lumber for construction, cardboard for packaging and paper for, well, basically everyone uses paper.
As I said before, we’d adapt and eventually learn to use other materials in place of wood. However, the change would cost us trillions of dollars.
So, we’d survive. However, others wouldn’t be as lucky. Woodpeckers are just one example of an animal whose lifestyle is nearly entirely centered around trees. Forests have some of the world’s most vibrant and diverse ecosystems on the planet, and these would be erased overnight. And since all ecosystems of the world interact together, every other ecosystem would be affected as well, leading to even more extinctions. The disappearance of forests would cause another extinction wave comparable to the one that killed the dinosaurs.
Even though us humans would still live on, we’d lose so much with the trees. Forests have grown on land ages before the Dawn of Man, and they have given so much into our culture, economy and lifestyle. I personally live and grew up next to a forest and honestly, a world without one would be a world without a meaning for me. The thought of not having trees is just unimaginable.


A world without trees would be a world without walks in the forest. It would be a world without squirrels, wild parrots and other critters that couldn’t adapt. There would be no blossoming cherry trees in the spring. In fact, there would be no cherries at all, as well as apples, bananas and other fruits that once grew so abundantly in trees.
Even though a disaster like this is hypothetical, the world’s forests are really in danger right now. Up to 80,000 acres of tropical rainforest is cut daily to satisfy the monstrous needs of our economy
leading to habitat loss, extinctions and loss of cultural landscape of indigenous people. These forests have been there longer than our species has even existed, so we should all do our share to protect these natural treasures to make sure they’ll be there for future generations to enjoy as well.


Olivia Emma, former SEO Exparts

Olivia Emma,前搜索引擎优化专家

Did you at any point imagine that why trees are significant in our life?
Do we have enough trees?
What might occur if there were no trees?
These are the inquiries that we should need to pose to ourselves, from others. Since perhaps the most important normal asset is planted. There would be no life on earth without plants. The earth is lucky to have plants and a bountiful number. There would be no human populace in the world in the event that it's anything but were for plants. No life is conceivable on the earth without plants. Life couldn't exist on Earth without trees since they produce the greater part of the oxygen that people and natural life relax. Trees assimilate carbon dioxide from the climate and deliver oxygen utilizing the cycle of photosynthesis. There would likewise be no downpour without trees.


Natalia Fay
The depletion of trees will (yes, will) lead to many horrible occurrences throughout the world.
The first effect of the absence of trees will be the decreased oxygen in the air. During photosynthesis, a process done in leaves of trees, carbon dioxide, water, and energy from sunlight is transferred into energy for the plant, with the waste products being oxygen and carbohydrates. This oxygen is then released back into the atmosphere, which is why trees and rainforests are called the lungs of the planet. Without trees, many other plants still exist, but trees produce oxygen as a waste product on a much larger and more widespread level than most other plants, so the effect will definitely be seen. And, since we breathe oxygen, no trees producing oxygen will be no bueno.
Another way trees help support the environment, and an environmental detriment that will be noticed if there are no more trees, is the simple fact that roots hold soil together. When there is rain or other precipitation, the roots from trees hold the soil together, specifically the fertile topsoil that helps support more plant growth, so that the soil does not wash away with the rainwater. If the soil did wash away, as stated before, it would be the fertile soil that helps support other plant growth, so the washing away of this soil will cause whatever area it is in to not be able to support plant life. With no more tree roots holding the soil together, the area will most likely become a desert. Trees are also pretty good at cleaning contanimants out of the water so it is clean by the time it reaches our drinking water sources.
Also, there's the fact that trees are provide homes for countless birds, animals, and insects, so the depletion of trees will lead to the majority of these animals being virtually homeless. Think squirrels are sassy when they're hungry? .Not to mention the habitats established by trees, mainly rainforests, are hugely responsible fir the biodiversity of the world. I think the Amazon holds around a fifth of the world's animals. And, in its direct effects on humans, trees hold many materials needed daily by most humans throughout the world, including fruits, medicine, and chocolate, so no trees will mean none of those.
As I'm writing this I keep thinking of more reasons, but I'm only 15 so I don't have any college courses or whatever to draw from, so if I missed some reasons, I missed some reasons.


Giovanni Iacopetti, MS in Forestry Sciences


Everybody Dies?:
as the national maple sirup reserves run out the Canadians get angry, God knows what could happen…
Rainforest ecosystems go to hell (and with them some big scale climate stuff), some of the ecosystems probably disappearing from the planet (they struggle to regenerate)
CO2 and oxygen levels could bump up and down a little, but it’s hard to tell, the rapid growth of smaller species could attenuate that
If you let the forest grow back you will have most of them back in 30–40 years (a lot of species grow back from the stump), without the giant trees, but still nice forests
A lot of species will go extinct: they need huge trees to survive, I’d guess some of these have medical use for the locals, some of them could feel bad too, we’d loose a lot in terms of biodiversity and knowledge and beauty
but in 200 years only a specialist could tell that it happened.
Forests are the natural state of many drylands, we have to continuously do something to keep the landscape in a different shape.


Anton Carver, former Staff Software Engineer at Google (2003-2016)

Anton Carver,前谷歌软件工程师(2003-2016)

There are thought to be about 3 trillion trees on Earth and humans are removing 15 billion per year. So if the rate remains constant humans will get to zero trees in a couple of centuries.
If we lost them overnight and it was because they burned (which seems the most likely way it could happen(+)). Then presumably whatever caused the trees to burn also wiped out all human life. The burning trees would release approximately 3 trillions tonnes of CO2 into the atmosphere. This will be enough to raise atmospheric CO2 levels to 750ppm


TejasIsAmazing, Just a casual gamer
We are living in 2070. There is only one tree in the world. People have made devices to extract oxygen from the tree to its full efficiency.
And a Tragedy happens.
Due to old age, the tree dies.
And a chaos happens.
People are very scared because the other way to get oxygen were very expensive.
Slowly, the poor people dies and the rich people still live a life of luxury, not knowing the deaths of poor.
Then the other ways to extract oxygen become very expensive.
Then the rich people start suffering.
Slowly but steadily Most of the population is destroyed.
Let's not let this epidemic happen.
Let's save the trees.
Thanks for spending your valuable time for reading this answer.
Have a good day!


Motilal Singh, Biology Professor (1992-present)

原创翻译:龙腾网 http://www.ltaaa.cn 转载请注明出处

1)Trees(green plants) are the producers of an ecosystem.
2) Green plants synthesise food for their own by means of photosynthesis and other organisms directly / indirectly depend on it for their nutrition.
3) Energy is required to proceed life activities of each and every individuals which is supplied by means of nutrition.
4) The sun is the ultimate source of energy which is trapped by green plants during photosynthesis and converts it into chemical energy- the carbohydrates (foods).
5) In photosynthesis the life gas O2 is evolved which is used for respiration.
6)Plants play important role in water cycle, N2 cycle, O2 cycle, Carbon cycle and other mineral or Biogeochemical cycles.
On the above criterion, if trees i.e. all the photosynthetic green plants do not exist then all other living organisms wouldn't exists too on the earth except chemosynthetic bacteria and euglena like creatures.
Hope this answers your question. Please upvote if you find this useful.
Thank you and have a great day!


Dan Leggs
Many people go by this Pre-School doctrine that Trees create earth's Oxygen.
The truth is that Many trees breath in Carbon Dioxide and let out oxygen only when the SUN is ON! When the sun is off (night) those same trees breath in the same oxygen like us and let out Carbon Dioxide like us.
So if there was no forest of earth Animal life would suffer bad which will cause an effect a cross the whole world. It would be very bad for the Earth.
We get 70% of our oxygen on earth from the Ocean and marine life... like algae and many other plant base ocean life.


Jose Ramirez Chavez, Associates in Science Biology, GateWay Community College (2020)

Jose Ramirez Chavez,GateWay社区学院科学生物学助理(2020年)

Life would beging languishing immediately if all trees were removed. If there were no trees to start with, there would have been no life on Earth. Trees are important right now. Currently in the Republic of Congo, after their forest was lost, the people fell to immense poverty or resorted to slavery. Because humans are engulfed in having thoughts of wealth is the reason why forests are being demolished. They plan on turning a forest that produces their air into a field for sports.


Nagaraj Hegde, former Basically Agriculturist

Nagaraj Hegde,前农业家

Last fifty years have cut large scale of forest by the name of urbanisation and industrialisation.
We don't know the significance of oxygen and photosynthesis from greenery.
An imbalance in carbon emissions and oxygen recycling.
If the same thing continue there will be no rain on this planet, and hence majority of the people will die by the hunger.and then by the suffocation, because of shortage oxygen.


Richard Kurian, lives in Kerala, India


Forests are very necessary for maintaining the ecological balance in nature. We will have to face the following problems if forests disappear suddenly.
Reduced production of oxygen. This can threaten the very own existence of all life forms on earth
The carbon cycle and oxygen cycle in nature will be interrupted.
Loss of habitat for wild animals, threatening their very own existence.
Extinction of many plant species.
Lack of availability of food for animals and tribal people.
Lowering of the water table. This leads to intense drought and desertification.
The food chain will collapse.
Most of the rivers will dry up.
Climatic change due to global warming.
Water scarcity.
Increase in the overall temperature of the earth.


Nicolai Veliki, works at Self (2005-present)
Do you mean if trees had never developed, or if suddenly all trees disappeared?
If all trees suddenly disappeared, we would likely suffocate. I don’t think the other photosynthesizers would pick up all of the trees’ slack fast enough. Even if they could, a lot of organisms rely on trees not only for oxygen, but also for food and shelter. All of them dying would rapidly release a lot of methane into the atmosphere from decomposing all of the corpses, which would severely accelerate global warming . Life would eventually rebound because there are microbes that would LOVE this environment, but possibly all multicellular life would die out within a century.
If trees hadn’t ever evolved, who know how Earth would look? There certainly wouldn’t be Humans, because we developed from tree-dwellers


B Fearns., former Imaginative process operator. (1979-2021)

B Fearns,富有想象力的前器件工艺操作员(1979-2021)

What will happen after a period of time to the forest floor if all trees are removed?
Erosion: all the good nutrients are washed a way. It is said that the organic forest floor is thin. Tree root support structures are essential to hold the ground together. Failed root systems may allow landslides through flooding & mud slides, a result that has devastated local human natives, who may have been dependent on the forest.
Within the forest everything is symbiotic, interdependent. Break one lix, the chain to coexist is broken.