On August 6th, 1945, the city of Hiroshima, Japan was attacked by a U.S. atomic force called the "Little Boy Bomb". The explosion wiped out 90% of the population and left damage for decades. This disaster was caused by humans. More specifically, by the orders of U.S. President Harry Truman. The explosion contained approximately 13 kilotons of force.
Not long before the tragic event occurred, leaflets were dropped on several Japanese cities (LeMay Leafets). These papers did not directly speak of any attack, but they did show a picture of an explosion, and warned that Americans were in possession of dangerous explosives.
After the bomb exploded, the city was in wreckage. The damage was spread throughout more than 5 square miles of Hiroshima. Hundreds of fires were also ignited by thermal pulse, which also caused everything in the explosion's vicinity to be incinerated. Nothing was left but waste, and most citizens were lost. Vegetation was totally lost and the city was stripped to nothing but garbage and soil.
Although the future of the town was uncertain, ecological succession was already underway. Citizens were unaware, but the winds were blowing away a lot of the polluted air and ash and ridding it of the area, even though there still was a lot of gas in the air. Winds could also pick up some of the small pieces of trash and wreckage that was left on the floor, but people were already working to get as much trash gone as possible.
High levels of radioactivity were found in the soil that was left, so plants were not able to grow. But, there were remnants of trees and shrubs that survived the explosion. In the end, radiation had no lasting effects on the soil and farmers were later able to plant seeds. They wasted no time, and farmers planted as much as they could. Crops and vegetation began growing at a normal rate.
Over the years, Hiroshima was really rising from the ashes. Their pioneer species had been the Red Canna flowers, which fortunately, really kickstarted pollination of plants. A lot of farmland was restored and buildings were brand new. At this point, the city was near climax. The population was beginning to regrow, and the ecosystem was increasing in biodiversity as well.
After many years, the city of Hiroshima had flourished and reached climax point. The population had been going up and down for years, but they had finally reached a stable point. Crops were totally replenished and the city had enough to provide for itself. Everything was healthy and balanced.
Today, Hiroshima is like any ordinary city. It has the average amount of natural radiation that is present anywhere. Since then, Hiroshima has industrialized. It is full of big buildings, streets, and people. Even though there are very few farms, all of the farms are flourishing and can provide for all citizens. If you didn't know that such a tragedy happened, you would think Hiroshima has always been perfect.