The roots of trees or other plantation hold soil particles together. The fact that they are tightly held prevents soil erosion by strong wind. Strong rain droplets and wind currents are the primary causes of soil erosion. Trees, as well as other plantation, offer a canopy over bare soil. Tree leaves break the momentum of heavy rain thus it falls softly to the ground. Similarly, strong wind passing over bare land can cause soil erosion unless there is plantation or tree cover. It is therefore advisable to plant a tree to mitigate soil erosion.
Global warming is a fast emerging issue due to a slew of several factors. Primarily, it is due to deforestation and destruction of vegetation cover. This leads to an increase in CO2 (Carbon dioxide) in the atmosphere causing global warming. There are catastrophic effects to global warming chiefly destruction of the Ozone layer and melting of mountain top snow causing flooding in lower areas. Planting trees ensures they convert excess carbon dioxide to oxygen by photosynthesis which is necessary for us to breathe.
People residing around trees or in the woods have cleaner air. It has been scientifically proven that trees filter the air. Purification occurs by absorption of pollutant gases. These include ammonia, sulfur dioxide, ammonia and oxides of nitrogen. Leaves trap harmful and hazardous air particulates as well as odors thus clearing the air making it cleaner for us to breath.
As rainwater falls to the ground, there is interaction with gaseous pollutants such as nitrogen oxides and oxides of sulfur making acid rain. With the absence of trees, acid rain flows to rivers and water bodies. Thus trees break rain droplets, so it seeps into the soil and does not flow to water bodies.
Trees provide a natural habitat for some wildlife primarily birds, rodents and a few mammals. These animals feed on fruit from the trees and so do insects.
Trees are a renewable energy source as the wood they provide is environmentally friendly as a fuel.
Tree canopies from tall trees provide shade and as such the underlying vegetation have slower rates of evaporation. This translates into more water being saved.
During harvesting season of fruits or tree products, there are employment opportunities for people around fruit orchards. Selling these fruits is a way of generating income and thus creating economic opportunities. Landscaping businesses make use of grass as well as trees and shrubs to give a particular place a facelift which is how they generate their income.
Well manicured lawns with trees and grass raise property value by an estimated 16 %. Trees and grass improve the general outlook of the property as well as being environmentally friendly.
Scientifically, trees take in carbon and emit oxygen that is necessary for humans to survive. This is a symbiotic relationship as we produce carbon during breathing.