Thursday, May 3, 2007

Environmental negative impact II-yichen

Due to globalization, the population will increase and the heavy flow of tourists is related to the pollution of the environment. The use of airplanes to transport people to and from the destinations and growing number of vehicles contribute to pollution. As the harmful gases such as carbon oxide, nitrous oxide will cause serious air pollution to the destinations. CO2 is the most abundant of the greenhouse gases and its present as a natural consequence of respiration. And it will cause the global warming. Vehicles are the highest emitter of carbon monoxide. It contributes 97% of the carbon monoxide emitted. So as more people come to the destinations, the use of these vehicles for transportaion increases a lot. Furthermore, the air-conditioners and refrigeration units in the increasing number of hotels further contribute chlorofluorocarbons in the air.

The noise pollution is also noticeable at airports, and around major roads and resorts frequented by tourists, as well as the greater number of nightspots in urban areas.

Besides air and noise pollution, there is also water pollution. Studies indicate that the average tourist uses ten times water and produces three times solid waste compare with average resident. The water pollution is caused by discharged sewage disposal system. Wastewater has also polluted seas and lakes surrounding tourist attractions.
And the polluted sea water is aesthetically unappealing and bathers risk suffering from water-borne diseases such as gastro-enteritis and typhoid. Sea-food can also become contaminated by pollution. Increased agricultural activity, stimulated by additional hotel damage for local food, has led to eutrophication and algal blooms. Rubbish and oil discharged form tourist boats and washed onshore by waves has contaminated beaches.

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