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Tree Plantations Presentation

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jasmin nijar

on 16 January 2013

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Transcript of Tree Plantations Presentation

Tree plantations Tree plantation is a biological practice where large amount of trees or plants have been planted in a given area. Most tree plantations are monoculture, which means that the trees are of the same species and there is no diversity like a natural forest would have. Plantations usually consist of fast growing trees which help reduce the time for their growth. They are planted either to replace logged forests or to substitute for their absence. Tree Plantation Natural Forest There are 3 different types of uses of tree plantation;
industrial plantations,
farm or home plantations,
and environmental plantations. Industrial Plantations - Industrial plantations are actively directed for the commercial production of forest products.
- they are used to produce high amounts of wood in the minimum time needed.
- Some of the uses of the wood are to make paper, timber, pulp and chips.
- The type of trees that are found in tree plantations are those that are best-suited to industrial applications.
- Some of the tree examples are pines, spruces and eucalyptus.
- These are commonly used because of their fast growth rate, also they are more suitable for the industrial applications, and are good for paper and timber production. Farm /Home Plantations Farm or home plantations are mainly used for home purposes like production of timber and fire wood. They can also be used to beautify property, provide shade in summer ,wind protection in winter and enhance privacy, all while increasing real estate values at the same time. Farms sometime do sell their wood that they harvest. - Environmental tree plantations are mainly used to help protect the environment from watershed, as soil protection and from the counter affects of deforestation.

-they also help promote re-plantation of trees and save many different species.

-Tree Plantations can help with erosion control, landslide stabilization and windbreaks as well.

- Tree plantations are a great thing for the environment and for us because they give out oxygen that we need to live and survive. Environmental Plantation Description of Tree Plantations Benefits of Tree plantations Most trees and shrubs in cities or communities are planted to provide beauty or shade, but they also serve many other purposes. The benefits of planting trees can be grouped into social, communal, and environmental, categories. Let's take a look at how tree plantation can help each of these categories.
Apart from their beauty, trees provide us with many benefits. Most of us respond to the presence of trees by simply observing their beauty. It has been proven that hospital patients have been shown to recover from surgery more quickly when their hospital room offered a view of trees. Also children have been shown to concentrate more in school and their studies if they spend time outdoors in green spaces. The strong ties between people and trees are very evident. Social Benefits Communal Benefits
Trees are very beneficial to the environment we live in by providing us with moderate climate, improving air quality, conserving water, and harboring wildlife. Environmental Benefits - Climate is controlled by moderating the effects of the rain, sun and wind.

-Radiant energy from the sun is absorbed or deflected by leaves on deciduous trees in the summer and is only filtered by branches of deciduous trees in winter.

-We are cooler when we stand in the shade of trees and are not exposed to direct sunlight. In winter, we value the sun’s radiant energy
.
- By using trees in the cities, we are able to moderate the heat-island effect caused by pavement and buildings in commercial areas. Overall by planting trees we return to a more natural, less artificial environment. Birds and other wildlife are attracted to the area. They provide species with wildlife habitat, food and protection. The natural cycles of plant growth, reproduction, and decomposition remain present, and natural melody is restored to the urban environment. Conclusion of Benefits Risks of Tree Plantations Despite its many benefits, tree plantations also pose many risks to the society and environment. - The fact that tree plantations are extensive monoculture operations makes them more susceptible to pest or disease.

-This uniformity of one or two species is prone to easy spread of infection and rapid colonization. --

-Monocultures have very less genetic variety, so if there were to be an infestation or widespread disease in the area, there’s a lesser chance that some of the trees will have an allele that is immune to the effects of the pest or disease.

- As a result this can destroy whole crops at once, and this will devastate farmers, for financial losses and time and effort will have been wasted. Risk #1 : Financial Loss In addition, many developing nations are burning native forests to plant imported tree plantation species for profit and carbon credits, this also adds to bad chemicals in the environment because many plants are not sustainable to the new environment for many years without chemical support. - Tree plantations also pose a indirect risk of increasing climate change.

- Although they intend to reduce carbon emissions in the atmosphere, carbon is released when tropical rainforests are cut to make space for tree plantations.

- As well, rapid growth and cutting cycles in tree plantations also add to carbon in the atmosphere.

- Natural old growth forests, store up to 3 times more carbon if they are not cut than tree plantations.

- Climate change only worsens by removing natural forests: the world’s most efficient carbon storage tools.
- Trees occupy considerable space, therefore making them an important part of the community.

- Tree lined streets have a traffic calming effect and allow traffic to move more slowly and safely.

-Trees can also be placed to screen unwanted views or noise from busy highways and they can complement the architecture or design of buildings or neighborhoods. Risk #4 Increasing climate change Risk #2 additional chemicals in
the environment Risk #3 Biodiversity loss Our group opinion on tree plantation is that it is destroying and harming the earth and its environment. As tree plantation are mostly grown for industrial purpose it can really affect the environment because most of the tree plantations are monoculture, this really disturbs the biodiversity and cause in loss of habitat in that area. Since the industries don't really care about the environment as much so they will produce only a few goods, whether lumber, fuel, resin, oil, or fruit. The Prospect of tree plantations promotes more companies and developing nations to cut down more of the beneficial natural forests and replace them with tree plantations for more profits. This will not just agitate the diversity but it will also affect the atmosphere, because of the carbon emissions released from cutting down natural forests and regulating of tree plantation harvest and this is one of the any reasons of deforesting. - Air quality can be improved through the use of trees.

- Leaves filter the air we breathe by removing dust and other particulates. Rain then washes the pollutants to the ground. Leaves absorb carbon dioxide from the air to form carbohydrates that are used in the plant’s structure and function.

- In this process, leaves also absorb other air pollutants such as ozone, carbon monoxide, and sulfur dioxide and give off oxygen. Environmental Benefit #1 Environmental Benefit #2 Indirect Indirect Direct tree plantations being monoculture also pose a direct risk towards previously native species. - Tree plantations can only support some biodiversity as they can provide a limited number of habitats.

- Since The Kyoto protocol gives carbon credits to countries for planting trees, this encourages many farmers to clear existing natural forests to plant large tracts of monoculture trees.
- In fact, 7% of closed natural forests that are lost in the tropics are a result of being converted to tree plantations.
For Example, in Indonesia, 1.4 million hectares of pulpwood plantations have been established on former natural forest land. - Natural forests, unlike tree plantations, contain many different species of trees and other plants that form the basis for supporting huge diversities of other organisms.

- If these forests are cleared to plant non-native trees, few of the former native species will be able to adapt and further biodiversity loss occurs. Biodiversity Loss Part 1 Biodiversity Loss Part 2 - For example, Indonesia has the world’s largest surviving populations of orangutans, which are endangered due to habitat loss. In fact, part of 25% forests inhabited by orangutans is licensed to conversion for timber plantations. Indirect Risk Conclusion By: Varun, Amneet and Jasmeen :) We believe that, despite their many seeming benefits, producing tree plantations are actually counter productive, as most of the time, they do not help improve the environment or reduce carbon gas emissions. Tree plantations actually encourage farm owners and companies to clear existing natural forests for profit and carbon credits as most tree plantations are for industrial purposes.

Tree plantations also do not significantly increase biodiversity, because, unlike natural forests, tree plantations are monoculture that can only support a limited number of species, in addition to being more subceptible to disease. Instead of reducing carbon, regular cutting/harvesting cycles of tree plantations actually counter these affects and add more carbon into the atmosphere. In conclusion Tree plantations do more harm than good; they result in biodiversity loss and increase climate change. Although they may be beneficial if they are planted on abandoned agricultural or degraded land, most of the time, tree plantations promote companies to cut down natural forests and replace them with tree plantations to gain more profit.

We believe that instead of promoting tree plantations through methods such as carbon credits, there should be stricter regulation to conserve natural forests. This is more beneficial because natural forests support an abundance of wildlife and habitats, as well as store up to 3 times more carbon than tree plantations in the atmosphere. To make a real difference in the environment, it would make more sense to save the existing trees instead of cutting them down and replanting them with manmade forests. Resources http://bwna.org.in/TreePlantation.aspx
http://www.sciencedaily.com/releases/2008/12/081201105657.htm
http://www.cifor.org/publications/pdf_files/Articles/AMurdiyarso0801.pdf
http://www.enn.com/wildlife/article/45212
http://www.enn.com/top_stories/article/38769
http://www.fao.org/docrep/004/ac122e/ac122e03.htm
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