population growth造句怎么写

The reason is that widening replacement-level fertility means population growth is slowing down anyway.

THOMAS MALTHUS first published his “Essay on the Principle of Population”, in which he forecast that population growth would outstrip the world’s food supply, in 1798.

These configurations of population growth have already generated a number of differing population trends of farreaching consequences which will be accentuated further during the next two decades.

Worldwide, virtually all population growth over the next 30 years will be in urban areas, with the most explosive growth taking place in Asia and Africa.

The statistics on population growth and hunger are disturbing. Last year the world's population reached 6 Billion. And by 2050, the UN estimates, it will probably near 9 Billion. Almost all that growth will occur in developing countries.

Growing water demand, driven by population growth and foreign land and water acquisitions, are straining the Nile's natural limits.

The contradiction between the supply and the demand of water surges increasingly with society development and population growth.

That is the number needed to keep a population stable, so observers sometimes take it as a given and say that America's population growth is entirely due to immigration.

In County Leitrim, in the Irish Midlands, housing construction outstripped demand (based on population growth) by 401% between 2006 and 2009, according to one estimate.

Global population growth, warmer climate, more serious environmental pollution, quickened urbanization, etc, those are the factors affect its quality and quantity.

The New World removed Malthusian constraints, which, until then, had meant that higher population growth could be achieved only at the expense of lower living standards.

What's more, though the economy added 117, 000 jobs, it falls short of the 150, 000 jobs a month needed just to keep up with population growth and prevent the unemployment rate from trending higher.

The chief reason for the population growth isn't so much a rise in birth rates as a fall in death rates as a result of improvements in medical care.

But population growth is raising demand.

This paper deduces a theoretical population model in a urban system under a hypothetical condition of zero population growth (ZPG), and analyses the population dynamics for the model.

The annual population growth rate over the decade averaged 1.7 percent.

Reaping the "demographic dividends" seen in declining dependency rates and slowing population growth.

The nearer a society approximates to zero population growth, the older its population is likely to be-at least, for any future that concerns us now.

Sure, their growth often could be much stronger than that of developed economies, partly because of robust population growth and steadily improving standards of living.

However, doing any of that without also making efforts to slow population growth makes an uphill climb even more difficult.

We know that we are getting even older, and that the nearer a society approximate to zero population growth, the older its population is likely to be - at least, for any future that concerns us now.

This has helped in the intensive food production which has characterized the modern world, and in turn made possible the massive population growth of the 20th century.

Because of population growth and the loss of farmland, the average farm size in China and Bangladesh has fallen from about 1.5 hectares in the 1970s to barely 0.5 hectares now;

We are entering a period of rapid population growth.

The report predicts population growth and climate change could cut available water in half by 2050.

We should concentrate our efforts on the management of family planning and related services in rural areas and among the floating population so as to control population growth.

Results of the advance tabulation of the Fifth National Population Census indicate that China has not only put its excessive population growth under effective control, but also entered the stage of a low fertility rate.

In the third part of the article, it introduces what some foreign countries are doing when they face the question of negative population growth, to learn from the world's advanced law culture.

Perhaps, relief: that the dark decades of soaring population growth, inching economic growth and intractable poverty, are finally over.

In 1920, despite population growth of 2.4 times the per capita share of grain remains in 1000 kg.

The average annual growth of grain output was 2.7 percent, greatly exceeding the population growth rate. Particularly in the last three years, China has continuously reaped good grain harvests, with the output in 1996 topping 500 million tons. This has reversed the long-term grain shortage in China.

But most important he said is to find ways to limit human pressures on the world's last wild places by slowing population growth and using resources more efficiently.

try to keep population growth in line with social and economic development