Unless planted in cities where they are maintained by people, trees typically live in forests which are complex renewable systems – a system in which many things depend on each other in order for life to continue in a healthy balance. Trees can't just live on their own; they would die.
Plants/trees get their daily requirements for growth from natural sources, and they don't necessarily require human beings for their growth. Water is obtained from rainfall, there is natural sunlight available, and nutrients are available in the soil.
FILTHY AIR: Without trees, humans would not be able survive because the air would be unsuitable for breathing. If anything, people would have to develop gas masks that filter the little oxygen that would be left in the air.
Trees are cut down for timber, waiting to be transported and sold. Deforestation is the purposeful clearing of forested land. Throughout history and into modern times, forests have been razed to make space for agriculture and animal grazing, and to obtain wood for fuel, manufacturing, and construction.
Oxygen. Two mature trees can provide enough oxygen for a family of four. One tree produces approximately 260 pounds of oxygen a year.
Scientists estimate that roughly half of the oxygen production on Earth comes from the ocean. The majority of this production is from oceanic plankton — drifting plants, algae, and some bacteria that can photosynthesize.
Douglas-fir, spruce, true fir, beech, and maple are toward the top of the list for oxygen release.
Without trees, formerly forested areas would become drier and more prone to extreme droughts. When rain did come, flooding would be disastrous. Massive erosion would impact oceans, smothering coral reefs and other marine habitats.
The loss of trees and other vegetation can cause climate change, desertification, soil erosion, fewer crops, flooding, increased greenhouse gases in the atmosphere, and a host of problems for Indigenous people.
15 billion trees are cut down every year.
Oxygen accumulates within the mats during the long days of the Antarctic summer, when the amount of sunlight they receive peaks. The researchers suggest these mats could have generated oxygen oases, and as these mats spread across the planet, they eventually triggered the Great Oxidation Event.
Fortunately for the living creatures in the Arctic, the other half comes from the world's oceans. Once again, photosynthesis is the process at work creating the oxygen. Rather than trees, however, oxygen is created in oceans by microscopic single-celled organisms called phytoplankton.
Areca Palm plant is a popular ornamental houseplant in every Indian household. But not many are aware that it provides oxygen 24*7. This way, it not only adds to the good looks of your space but also turns the surrounding air breathable by working as a natural air purifier.
This phenomenon is known as inosculation, which occurs when two individual trees growing in close proximity become morphologically joined. It's important to note that inosculation is different from grafting in that it is a naturally occurring phenomenon.
The life cycle of a tree begins as a seed, then it grows into a sprout. After this phase, it grows into a sapling then eventually becomes a mature tree, which can reproduce seeds so the cycle can begin again. At the end of its life, the tree decays into a snag and gives nutrients to the ground.
There are some truly solitary trees, but not very many. When you happen to come across one, it is always interesting to try to figure out how it got that way. Indeed, every solitary tree, or better, any plant that is isolated, far away from its species mates, almost always has an interesting story to tell.
It is possible for a tree to grow back from its roots, depending on the species. If the roots are not completely removed, they can continue to grow and eventually lead to new tree growth. However, this process takes many years and is not guaranteed. Herbicide can also be used to kill the roots to prevent regrowth.
Right now, just over 3 trillion trees are growing on our planet. Every year, over 15 billion of those trees are felled or lost to natural disasters. At this rate, earth's last tree will fall in roughly 200 years.
One wrong cut won't immediately kill your tree, but pruning incorrectly or too often can. If a tree repeatedly loses too much of its canopy at one time, it can become weak or even die from the stress. That's why you shouldn't trim more than 25% of a tree's canopy at one time.
If forests are cleared, or even disturbed, they release carbon dioxide and other greenhouse gases. Forest loss and damage is the cause of around 10% of global warming. There's simply no way we can fight the climate crisis if we don't stop deforestation.
Trees help clean the air
Trees remove pollution from the air — in fact, in one year, a mature tree removes an estimated 48 pounds of carbon dioxide from the air. This impacts the air inside your home too, with one study finding that roadside trees reduced nearby indoor air pollution by 50%.
Today, annual tree harvest vs. production on a worldwide scale shows that humans cut down approximately 15 billion trees a year and re-plant about 5 billion. That's a net loss of 10 billion trees every year, and a rate that would mean the loss of all trees within the next 300 years.
Bamboo produces 35% more oxygen than trees - Aussie Bamboo.
The Great Basin Bristlecone Pine (Pinus longaeva) has been deemed the oldest tree in existence, reaching an age of over 5,000 years old.
Like all plants, grass plants in your lawn take in carbon dioxide from the air. Then, as part of the process of photosynthesis, those grasses help produce the oxygen you breathe. Healthy lawns are remarkably efficient at oxygen production.