Dear EarthTalk: What are the primary environmental concerns in the aftermath of the big earthquake in Haiti? - Frank Dover, Portland, Ore.

As would be the case after any natural disaster, water-borne illness could run rampant and chemicals and oil could leak out of damaged storage facilities as a result of the magnitude 7.0 earthquake that ripped apart Haiti on Jan. 12. Surprisingly, no large industrial spills have been found during initial post-quake rescue efforts, but of course the focus has been on saving human lives and restoring civil order.

According to the United Nations Environment Programme, the biggest issue is the building waste; some 40 to 50 percent of the buildings fell in Port-au-Prince and nearby towns. "Thousands of buildings suddenly become debris and this overwhelms the capacity of waste management," says UNEP's Muralee Thummarukudy, who is directing efforts to collect the waste for use in reconstruction projects.

Even before the quake, Haiti had major environmental problems. Intensive logging beginning in the 1950s reduced Haiti's forest cover from 60 percent to less than 2 percent today. This lack of trees causes huge soil erosion problems, threatening both food and clean water sources for throngs of hungry and thirsty people. "If you have forest cover, when heavy rain takes place it doesn't erode the land," UNEP's Asif Zaidi said. "It doesn't result in flash floods." He adds that, due to its lack of forest cover, Haiti suffers much more during hurricanes than does neighboring Dominican Republic.

Compounding these ecological insults is Haiti's fast growing population, now 9.7 million and growing by 2.5 percent per year. This has pushed millions of Haitians into marginal areas like floodplains and onto land that could otherwise be used profitably. "Most fertile land areas are often used for slums, while hillsides and steep landscapes are used for agriculture," reports USAID's Beth Cypser. The resulting sanitation problems have stepped up cases of dysentery, malaria and drug-resistant tuberculosis among Haiti's poverty-stricken population. Trash-filled beaches, smelly waterways, swarms of dead fish and tons of floating debris stand testament to Haiti's water pollution problems - now exacerbated by the earthquake.

Perhaps the silver lining of the earthquake in Haiti is the fact that millions of people around the world now know about the plight of the country's people and environment, and donations have started to pour in. Anyone interested in helping relief efforts in Haiti can send a text message triggering a small donation to the American Red Cross (text "HAITI" to 90999 and $10 will be donated and added to your next phone bill).

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