Essay About Urbanization

951 Words2 Pages

Too Much of a Good Thing Humans have been changing the environment for thousands of years. With the advent of agriculture, humans began to effect the land in more ways then before. Rapid change in the way we channeled rivers to grow crops soon began to change where cities grew around certain areas. It also allowed areas with little rain to be able to grow food, allowing for further expansion of civilizations. When the industrial revolution came to America, Americans began to see more urbanization. As things became easier to make, areas that couldn’t sustain many people then became able to have giant cities. Growth in civilizations plays a huge factor into environmental change, and when the world’s population grow the world’s urban population …show more content…

According to the UN World Urbanization Prospects, developing countries tend to have a larger growth at a steeper rate as living conditions are improved. However, this does not necessarily mean that only rural areas are going to have rapid growth. Places such as China and Japan where it is a very condensed population will also have rapid growth as the sheer number of people in the area surpasses many developed nations. It is impossible to determine by how much or when the growth will take place. The United Nations Population Division has stated it is difficult to project urbanization, as each region defines urbanization differently. Urban populations interact with their environment. Urban people change their environment through their consumption of food, energy, water, and land. And in turn, the polluted urban environment affects the health and quality of life of the urban …show more content…

The heat island phenomenon is created because cities radiate heat back into the atmosphere at a rate 15 percent to 30 percent less than rural areas. The combination of the increased energy consumption and difference in albedo (radiation) means that cities are warmer than rural areas. And these heat islands become traps for atmospheric pollutants. Cloudiness and fog occur with greater frequency. Precipitation is 5 percent to 10 percent higher in cities; thunderstorms and hailstorms are much more frequent, but snow days in cities are less common. Urbanization also affects the broader regional environments. Regions downwind from large industrial complexes also see increases in the amount of precipitation, air pollution, and the number of days with thunderstorms.17 Urban areas affect not only the weather patterns, but also the runoff patterns for water. Urban areas generally generate more rain, but they reduce the infiltration of water and lower the water tables. This means that runoff occurs more rapidly with greater peak flows. Flood volumes increase, as do floods and water pollution

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