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MEKARN Workshop 2009: Livestock, Climate Change and the Environment |
This paper reviews environmental problems of typical Deltas of the world and how people adapted to environmental changes. The major Deltas, which are Chesapeake Bay, Columbia River, Everglades and South Florida, San Joaquin River, Colorado River, the Mississippi River, the Puget South, the Netherlands, Po River (Italia), and the Mekong River, are considered. Overviews of historical events show environmental conditions of these Deltas were tremendously changed by human. Most of the Deltas significantly met pressures from population, agriculture and urbanization. They faced to problems in water supply, ecosystem, flooding, and public health. To adapt to these changes, each Delta reacted differently. Most of the Deltas developed actions on water quality control, restoration, sea level rise, law, and regulation. Some used specific solutions for their adaptation. To adapt to the changes, governments had great efforts to respond to the changes. However, in cases, the management was not due to expected goals.