[Biology Class Notes] on Reforestation Planting Trees Pdf for Exam

Reforestation Meaning 

Trees are an important part of our ecosystem; they help in recycling the air in the atmosphere. We inhale oxygen and exhale carbon-dioxide gas; trees need carbon-dioxide in the process of photosynthesis. In this process, they release oxygen which is useful for non-photosynthetic plants and all complex life forms. Therefore, all heterotrophic beings that are a part of the atmospheric ecosystem rely on autotrophic plants for their source of oxygen. Besides, plants are also useful in many other ways for us. Humans have used wood and other parts of the plant in a lot of ways for many millennia. Reforestation and afforestation are the responses to the scarcity of trees. The reforestation meaning is important for biology students to learn.

Deforestation

Deforestation is a term used to indicate the reduction of forests due to cutting down trees at a rapid rate. Due to the growing demand of people with the exponential growth of population, there is rapid deforestation to use the land for human habitation; this has led to an increase in the levels of carbon dioxide. The gradual increase in the levels of carbon-dioxide is linked with global warming. Global warming is known to have hazardous effects like climate change which in turn can lead to the extinction of some species that form an important part of our ecosystem. Therefore, loss of such invaluable organisms can lead to ecological collapse and consequent mass extinction of life, including the extinction of human beings. Due to global warming, there are other problems too that may have a permanent and irreversible impact on Earth. Shrinkage of ice depositions at the North and South poles can increase the level of seawater and result in submergence of some amount of landmass in it. It can lead to a less landmass habitable for humans. 

Reforestation and Afforestation

Due to the dwindling number of trees and consequent global warming, environmentalists have suggested that reforestation is one of the ways to curb and reverse the effects of global warming and greenhouse effects due to greenhouse gases like carbon dioxide. Reforestation means planting of trees in deforested places. Once replanting on a colossal scale is done, the plants thus can produce atmospheric oxygen by using up carbon dioxide and reducing the carbon footprint. Some environmentalists also suggest afforestation in addition to reforestation. In afforestation, trees were planted even in places where there were no earlier forests. Both reforestation and afforestation are good strategies to increase carbon capture. However, they may serve different purposes meeting the ecological needs midway with the needs of humans, meeting both. 

Here are Some Ways They Can be Helpful: 

(1) Habitation Without Affecting the Nature- Deforestation is only carried where the thus available land can be used for human habitation. Places, where the trees have been cut down in a high number and have been used up for living, cannot be reforested. In such a situation, the loss of the number of trees can be compensated with afforestation of a place which is not suitable for living and has less to no vegetation. The increased number of trees, thus, can help in carbon capture. 

(2) Supply of Resources- Trees are one of the biggest sources of materials that we need for day-to-day activities; this is why trees are one of the most important renewable resources for the consumption of human beings. Due to deforestation, we tend to lack wood as one of the most important renewable resources. Therefore, reforestation and afforestation can help us restore the constant supply of wood and other resources from trees. Trees can be planted with the strategic importance of the variety of fruit for human consumption. Therefore, we can also get the right amount and supply of fruits with reforestation and afforestation. 

(3) Perpetuation of Varieties- One of the biggest dangers of deforestation is that it may lead to the extinction of some species of trees and plants, and also animals which are either vital for human consumption or have a prominent place in the ecosystem. With deliberate planting of trees and plants, we can ensure the survival of the variety of species of plants. Also, forestation can help us raise animals which have good genetic quality, in human-made forests, for their genetic variability that is crucial for the survival of the species.