Population and environmental issues is closely inter-causal links, to a certain stage of social development, and productivity of a certain level of geographical conditions, the population should be maintained at an appropriate proportion of proliferation within.

　　人口問題是與環境問題有密切的互為因果的聯系，在一定社會發展階段，一定地理環境和生產力水平條件下，人口增殖應保持在適當比例內。

　　The rapid growth in world population caused many problems. In particular, some over-population, economic growth in developed countries, affecting the country's economic development, social stability and people's living standards, many of the problems to human life. World population problems

　　In order to solve the problem of excessive population growth, the human must control their own, so that planned fertility, the population growth and socio-economic development compatible with the environment, resource coordination.

　　世界人口的迅猛增長引起了許多問題。特別是一些經濟不發達國家的人口過度增長,影響了整個國家的經濟發展、社會安定和人民生活水平的提高,給人類生活帶來許多問題。 人口數量問題困擾世界

　　為了解決人口增長過快的問題,人類必須控制自己,做到有計劃地生育,使人口的增長與社會、經濟的發展相適應,與環境、資源相協調。

　　In the 1970s, it was considered to account for the population at that time had lived on earth for 75% of the total population. The widely quoted statistics are too affected by the impact of the 20th century population explosion - the proportion of it is incredibly high. To get a more accurate result, we must determine when modern humans from the beginning, the birth rate is the number, and the history of how many people lived in the end. Generally believe that modern man is in the 50,000 years ago. We can imagine, does not limit the population was born, and life expectancy is very short, which resulted in a young population and higher fertility rates - every mother's health at around six to eight children. To the Middle Ages, the birth rate began to decline long. The record shows that since the 18th century, when the industrialized countries, the birth rate continues to decline. U.S. demographers Carl - Hao Po (CarlHaub) that, before the advent of agriculture, hunting in the way, the world's population is only about 5 million to 10 million. Light of the message, to the 1st century AD, according to the Roman, Chinese and Mediterranean off the census, the world's population has grown to 300 million. Application of this population a higher birth rate, we can estimate that so far a total of life on Earth over approximately 106 billion people. We now have 6.1 billion people, accounting for life on Earth has had a total population of 5.7%. In 1900, only 16 million people around the world, but developing countries rapid population growth led to the proliferation of the world's population, so we had a population proportion of the population of the Earth on the rise.

　　在20世紀70年代，有人認為，當時的人口要占地球上曾經生活過的總人口的75%。這一被廣泛引用的統計結果過于受20世紀人口爆炸的影響——比例實在是高得令人難以置信。要想得到一個比較精確的結果，我們必須確定現代人類是從何時開始的，出生率是多少，以及歷史上到底生活過多少人。普遍認為，現代人是在5萬年前出現的。我們可以設想，當時是不會限制人口出生的，且人的壽命都很短，這就導致一個年輕的人口結構和較高的生育率——每個母親大約會生6到8個孩子。到了中世紀，出生率開始長時間地下降。18世紀以后的記錄表明，當時的工業化國家，出生率在持續下降。 　　美國人口學者卡爾-郝伯(CarlHaub)認為，在農業出現以前，在以狩獵為生的方式下，全世界的人口大約只有500萬到1000萬。科技之光消息，到了公元1世紀，根據當時羅馬、中國和地中海地區的斷斷續續的人口普查，世界人口已增長至3億。對這個人口應用一個較高的出生率，就可以估算出，迄今為止地球上總共生活過大約1060億人。我們現在有61億人，占地球上曾經生活過的總人口的5.7%。在1900年，全世界只有16億人，但是發展中國家人口的快速增長導致世界人口的激增，所以我們現有人口占地球曾有人口的比例在上升。
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