(Created page with "''Four Pest campaign'' Mosquitoes, flies, rats and sparrows - these four so-called plagues were to be destroyed at the end of the 1950s under Mao Zedong's rule. Mao was certain that this was "the great leap forward" to combat economic and social social inequalities in the country. The calculation seemed logical. One sparrow eats about 2 to 4 kilos of grain a year and, on this assumption, by killing one million sparrows, 60,000 people could already gain food. The extermi...") Tag: 2017 source edit |
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Revision as of 00:13, 6 November 2023
Four Pest campaign Mosquitoes, flies, rats and sparrows - these four so-called plagues were to be destroyed at the end of the 1950s under Mao Zedong's rule. Mao was certain that this was "the great leap forward" to combat economic and social social inequalities in the country. The calculation seemed logical. One sparrow eats about 2 to 4 kilos of grain a year and, on this assumption, by killing one million sparrows, 60,000 people could already gain food. The extermination of the birds was successful, but the death of the birds was followed by a raising population of insects and thus a plague of grasshopper. The result: the great famine between 1959 and 1961. In 1960 sparrows were placed in the agenda by bed bugs. Today, sparrows are a rare species in China.
At the beginning of the 20th century, the North America was brought to Europe - for the fur industry.
At some point, the animals were able to escape from their cages. Today they are considered a
plague, as they have hardly any natural enemies in Central Europe. The situation is similar with raccoon dogs from Japan. Lynx, wolves, brown bears or, in the case of offspring eagle owls can also become enemies. The most common cause of death for raccoons is traffic.