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The chart below shows the shaping and growth of the forests in Yellowstone N
The chart below shows the shaping and growth of the forests in Yellowstone N
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2025-02-18
29
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问题
The chart below shows the shaping and growth of the forests in Yellowstone National Park after a fire disaster.
Write a report for a university lecturer describing the information shown below.
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答案
The diagram illustrates in four stages the recovery of the forests in Yellowstone National Park after a fire disaster.
According to the diagram, in the first picture, while the old forests still exist, they drop bad wood to the soil under them, which makes the soil more fertile, then lightning and fire strike, destroying the forests completely. And the growth of new forests starts right at this point. The second picture demonstrates that in the first 50 years after the devastating fire, saplings emerge where the old forests used to stand. The second five decades see the saplings grow in build while descend in overall number. In the next two centuries, the young trees continue to thrive in Yellowstone, because of the fertile soil and the ample sunlight. Then, three hundred years after the fire, the number of trees decline to roughly the same as the old forests.
These five pictures show us that it takes as long as three centuries for a destroyed forest to be fully recovered.
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