Examples of the effects of overpopulation in China include food shortages, a decrease in global biodiversity, the elimination of resources and land, pollution and poor living conditions. There have been some assumptions that the proper farming technology has always existed for China to properly contend with overpopulation.
During China's food shortage between 1958 and 1961, an excess of approximately 20 million people died. It's reported that famines that occurred before 1958 left even more dead, due to rampant human fertility and the strain on the land's resources.
While China has since implemented a one-child-per-family policy, implementation of the rule hasn't always been smooth. The policy has also helped prevent another famine and has kept China's population from reaching two billion. China is now gathering lands overseas in order to cultivate them for farming.
Overpopulation in other counties has led to the degradation of nature's free resources, including protection from inclement weather conditions, water filtration, nature's pollinators, sources of recreation and healthy soil. An abundance of individuals living in a single location also leads to overtaxed schools, medical facilities, public transportation systems and housing facilities. Other countries experiencing overpopulation have started implementing incentives to smaller families, and have made birth control available.