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M E G A C I T Y : a very large city, typically one with a population of over ten million people
M E G A R E G I O N : a group of two or more roughly adjacent metropolitan areas, which may be somewhat separated or may merge into a continuous urban region
What happens when megacities sprawl and merge? They become a megaregion. There are 21 megaregions in the world. By 2025, there will likely be at least 30 more.
What happens when megacities sprawl and merge? They become a megaregion. There are 21 megaregions in the world. By 2025, there will likely be at least 30 more.
Megaregions form in countries with strong economic growth, such as Brazil, India, the United States, and China. ONe of the largest megaregions in the world is in China's Pearl River Delta.
Megaregions form in countries with strong economic growth, such as Brazil, India, the United States, and China. ONe of the largest megaregions in the world is in China's Pearl River Delta.
P E A R L R I V E R D E L T A
P E A R L R I V E R D E L T A
In the 1970s, there were several small villages in the Pearl River Delta. The area was almost completely agricultural; it was only 1 percent urban. Today, it is a megaregion of nine cities with a total population of 120 million. The growth of factories, housing, roads, and other infrastructure has devoured the farmland and most of the remaining forest.
Task:
Task:
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Complete: Frayer Model (put "Megaregions" in the center)
Complete: PMI Chart: The Pearl River Delta
These satellite images show the Pearl River Delta in (A) 1973 and in (B) 2003. The photos were taken using infrared photography, and the red areas represent vegetation. You can see that in 1973, there was mainly vegetation and only a few villages. By 2003, the area was developed (grey areas).
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