What are the most important environmental and demographic trends of the twentyfirst century?
What are the most important environmental and demographic trends of the twentyfirst century?
The twenty-first century has been marked by rapid urbanization. The transformation of land use and land cover is a prerequisite for urbanization. Nearly 7 billion people are expected to live in cities by 2050. The exponential population growth has increased the demand for available services, including basic infrastructure, resulting in larger urban footprints. Changes in the climatic pattern have resulted in a steady decline in quality of life and the environment, especially in and around urbanized areas.
Demographic profile has been changed drastically after world war I and II. Awareness regarding the birth rate and the death rate has been increased. Demographic transition theory by Warren Thompson in 1929 explained that how population will grow.
The most important environmental and demographic trends of the twenty-first century are as follows:
The most serious environmental issues of the twenty-first century have the potential to change the direction of human life on Earth. Global warming, hazardous waste, water, and air pollution, acid rain, and diminishing energy sources are all frightening problems that could endanger our future if we do not face them.
According to Demographic Transition theory,
In the third level, low population growth is caused by a decreasing birth rate and a low death rate. Structure shifts in the economy tend to occur in tandem with the country's economic growth. Urban areas tend to attract a large population. Big families begin to be seen as a liability. As a result, the birth rate starts to decline.
The death rate has remained poor. The population growth rate is slowing. India is currently in the midst of a demographic change. The following are some of the stage's most notable characteristics:
The third stage of the Population Pyramid is Stationary, Population growth slows down, Birth rate declining rapidly, The decline in fertility rate, Death rate declines slowly, Birth rate approaches, high life expectancy.
Fourth Stage or Stage of Low Birth Rate and Low Death Rate (Mostly in developed countries such as the USA, European Countries, etc.)
In the fourth stage, a low rate of birth and a low passing rate lead to Population adjustment. In this stage, due to the fast monetary turn of events, the way of life of individuals turns out to be exceptionally high. Personal satisfaction is given a need to the size of the family. The key remarkable highlights of this stage are as per the following:
- Populace Pyramid is Contracting
- Steady or moderate populace increment
- Low rate of birth
- Low demise rate
- High future
- The rate of birth is roughly equivalent to the demise rate
- The ripeness rate is near or underneath 2.1
- Numerous more established individuals
Step by step
Solved in 3 steps
