Friday, November 16, 2012

Deforestation in Thailand and How to Solve


     “Tropical deforestation is responsible for about 20% of global greenhouse gas emissions - more than all the cars, trucks, planes, boats and trains in the world combined.” (greenpeace organization) Now, over 75% of the forests in Thailand are gone because of deforestation. (wrm organization)  This is a major environmental problem in Thailand. Deforestation is removing or cutting down forest area. There are many cause of deforestation. People cut down trees for industry and space for farming and living. Wood industries are growing continuously in Thailand. Deforestation can cause natural disaster such as flood. It also affects wild life. We should find a way to stop deforestation or we will be facing disaster. 

     Deforestation causes many environmental problems in Thailand including air pollution and natural disasters. It is one of the causes of the global warming. In the atmosphere, there are gases such as methane, chlorofluorocarbons, nitrous oxide, and ozone which help to control the heat loss to the space. Having too much of these gases will keep the heat in the Earth. Trees can help to absorb these gases. Trees can absorb carbon dioxide and replace it with oxygen. They also help to absorb pollution in the air. The water cycle is also affected by the deforestation. Trees absorb the water under the ground and release it to the air which produces atmospheric moisture. So if there are no trees the water in the soil will not be adsorb up which causes flood and landslide. As you can see, Thailand is facing with flood every year. Flood destroy people’s house and effect the economic. Tropical rainforests also produce about 30% of fresh water on earth. (coolearth organization) Insects and other wild animals are affected from deforestation. They have no places where they can live.



     There are many causes of deforestation in Thailand. The major cause is the growth of population. As population increase the demand for food is also increase. The forest needed to be cut down for people to find space for farming. Also, people will need more space for living. So the forest is replaced with people’s house. Another cause of deforestation is the wood industry is growing very fast. The demand of wood is increasing every year. This includes the increasing of paper demand. The government is not taking this problem serious enough. There are still many illegal logging industries in Thailand.

     There are many ways to solve this problem. One easy way is to recycle things that are made from trees. Use the brands that made papers from recycle papers. Government need to give education to people about recycling. Many people still don’t know why recycle is important. Recycling can help to save natural resources such as trees. While stop cutting down trees seem to be impossible because trees are important for industry, also affect job opportunities, we could try to cut down less trees. Making a law to control logging is a good way to control deforestation.  The law should prevent the forest are that should not be cut down from being cut down. But in Thailand laws don’t seem to work, so making laws is not a good solution. We also could find a new way for farming to prevent cutting down more trees. There are many places for farming without cutting down trees. We could lower the demand of food that used a lot of spaces to farm for example eats less cows.  Another interesting solution for deforestation is to replant trees or we called “reforestation”. This solution seems to be the most realistic solution. In many countries, reforestation is helping to increase the forest area. It takes a lot of time for trees to grow. So we need to stat reforestation as soon as we can.

     Deforestation problem is not hard to solve if everyone take care of it seriously. Everyone needs to know that they are affected by deforestation. No one wants to see flood or mud flow happening in Thailand. This problem needs to be solved immediately or more bad things will happen to us. Everyone needs to help solving this problem before it is too late. As Mahatma Gandhi once said “You must be the change you wish to see in the world”

Thursday, November 15, 2012

How LCA is used


LCA is mostly used to support business strategy and R&D, as input to product or process design, in education and for labeling. LCA will be continuously combine with the built environment as tools such as the European ENSLIC Building project guidelines for buildings or developed and implemented, which provide practitioners guidance on methods to implement LCI data into the planning and design process.




4 main phases of LCA


There are 4 main phases of LCA:

1.    Goal and scope

An LCA starts with a clear statement of the goal and scope of the study, which sets out the context of the study and explains how and to whom the results are to be communicated. This is a key step and the ISO standards require that the goal and scope of an LCA be clearly defined and compatible with the application. 

 

2.    Life cycle inventory

Life Cycle Inventory (LCI) analysis involves creating an inventory of flows from and to nature for a product system. Inventory flows include inputs of water, energy, and raw materials, and releases to air, land, and water. To develop the inventory, a flow model of the technical system is constructed using data on inputs and outputs. The flow model is regularly illustrated with a flow chart that includes the activities that are going to be evaluate in the relevant supply chain and gives a clear picture of the technical system boundaries.

 

3.    Life Cycle impact assessment

Inventory analysis is followed by impact assessment. This phase of LCA is aimed at evaluating the importance of potential environmental impacts based on the LCI flow results. Classical life cycle impact assessment (LCIA) consists of selection of impact categories, category indicators, and characterization models, the classification stage, where the inventory factors are sorted and assigned to specific impact categories and impact measurement, where the categorized LCI flows are characterized, using one of many possible LCIA systems, into common equivalence units that are then summed to provide an overall impact category total.


4.    Interpretation

Life Cycle Interpretation is a systematic technique to identify, quantify, check, and evaluate information from the results of the life cycle inventory and/or the life cycle impact assessment. The results from the inventory analysis and impact assessment are summarized during the interpretation phase. The outcome of the interpretation phase is a set of conclusions and recommendations for the study. According to ISO 14040:2006, the interpretation should identification of importance issues based on the results of the LCI and LCIA phases of an LCA, evaluation of the study considering completeness, sensitivity and consistency checks and conclusions, limitations and recommendations.


What is Life-cycle Assessment?


          Life-cycle assessment (LCA) is a way to estimate the environmental aspects and potential impacts associated with a product, process, or service. LCAs can help avoid a narrow outlook on environmental concerns by captivating an inventory of relevant energy and material inputs and environmental releases, evaluating the potential impacts associated with identified inputs and releases and clarify the results to help make a more informed decision. The goal of LCA is to compare the full range of environmental effects distributing to products and services in order to improve processes, support policy and provide a sound basis for informed decisions.