CLASS-
VIII RESOURCES
AND DEVELOPMENTS
06. HUMAN RESOURCES
INTRODUCTION
·
People
are a nation’s greatest resource. Nature’s bounty becomes significant only when
people find it useful. It is people with their demands and abilities that turn
them into ‘resources’. Hence, human resource is the ultimate resource. Healthy,
educated and motivated people develop resources as per their requirements.
·
The
Government of India has a Ministry of Human Resource Development. The Ministry
was created in 1985 with an aim to improve people’s skills.
Distribution of Population
·
The
way in which people are spread across the earth surface is known as the pattern
of population distribution. More than 90 per cent of the world’s population
lives in about 30 per cent of the land surface. The distribution of population
in the world is extremely uneven.
·
Some
areas are very crowded and some are sparely populated. The crowded areas are
south and south east Asia, Europe and north eastern North America. Very few
people live in high latitude areas, tropical deserts, high mountains and areas
of equatorial forests.
·
Many
more people live north of the Equator than south of the Equator. Almost
three-quarters of the world’s people live in two continents Asia and Africa.
·
Sixty
per cent of the world’s people stay in just 10 countries. All of them have more
than a 100 million people.
Density of Population
·
Population
density is the number of people living in a unit area of the earth’s surface.
·
It
is normally expressed as per square km. The average density of population in
the whole world is 51 persons per square
km.
·
South
Central Asia has the highest density of population followed by East and South
East Asia.
·
Average
density of population in India is 382 persons per square km.
FACTORS AFFECTING
DISTRIBUTION OF POPULATION
Geographical
Factors
·
Topography: People always prefer to live on plains
rather than mountains and plateaus because these areas are suitable for
farming, manufacturing and service activities. The Ganga plains are the most
densely populated areas of the world while mountains like Andes, Alps and
Himalayas are sparsely populated.
·
Climate: People usually avoid extreme climates
that are very hot or very cold like Sahara desert, polar regions of Russia, Canada
and Antarctica.
·
Soil: Fertile soils provide suitable land for
agriculture. Fertile plains such as Ganga and Brahmaputra in India, Hwang-He,
Chang Jiang in China and the Nile in Egypt are densely populated.
·
Water: People prefer to live in the areas where
fresh water is easily available. The river valleys of the world are densely
populated while deserts have spare population.
·
Minerals: Areas with mineral deposits are more
populated. Diamond mines of South Africa and discovery of oil in the Middle
east lead to settling of people in these areas.
Social, Cultural
and Economic Factors
·
Social: Areas of better housing, education and
health facilities are more densely populated e.g., Pune.
·
Cultural: Places with religion or cultural
significance attract people. Varanasi, Jerusalem and Vatican city are some
examples.
·
Economic: Industrial areas provide employment
opportunities. Large number of people are attracted to these areas. Osaka in
Japan and Mumbai in India are two densely populated areas.
·
Life expectancy It is the number of years that an average
person can expect to live.
POPULATION CHANGE
·
The
population change refers to change in the number of people during a specific
time. The world population has not been stable. This is actually due to changes
in the number of births and deaths.
·
For
an extremely long period of human history, until the 1800s, the world’s
population grew steadily but slowly. Large numbers of babies were born, but
they died early too. This was as there were no proper health facilities.
Sufficient food was not available for all the people. Farmers were not able to
produce enough to meet the food requirements of all the people. As a result the
total increase in population was very low.
·
In
1804, the world’s population reached one billion. A hundred and fifty five
years later, in 1959, the world’s population reached 3 billion. This is often
called population explosion.
Reasons of
population change
·
In
1999, 40 years later, the population doubled to 6 billion. The main reason for
this growth was that with better food supplies and medicine, deaths were
reducing, while the number of births still remained fairly high.
·
Births
are usually measured using the birth rate i.e. the number of live births
per 1,000 people.
·
Deaths
are usually measured using the death rate i.e. the number of deaths per
1,000 people. Migrations is the movement of people in and out of an area.
· Births and deaths
are the natural causes of population change. The difference between the birth
rate and the death rate of a country is called the natural growth rate.
·
The
population increase in the world is mainly due to rapid increase in natural
growth rate.
·
Migration is another way by which population size
changes. People may move within a country or between countries.
·
Emigrants are people who leave a country; Immigrants
are those who arrive in a country.
·
Countries
like the United States of America and Australia have gained in-numbers by
in-migration or immigration. Sudan is an example of a country that has
experienced a loss in population numbers due to out-migration or emigration.
·
The
general trend of international migrations is from the less developed nations to
the more developed nations in search of better employment opportunities. Within
countries large number of people may move from the rural to urban areas in
search of employment, education and health facilities.
Patterns of
Population change
·
Rates
of population growth vary across the world. Although, the world’s total
population is rising rapidly, not all countries are experiencing this growth.
·
Some
countries like Kenya have high population growth rates. They had both high
birth rates and death rates. Now, with improving health care, death rates have
fallen, but birth rates still remain high leading to high growth rates.
·
In
other countries like United Kingdom, population growth is slowing because of
both low death and low birth rates.
Immigration- When a person
enters a new country.
Emigration- When a person
leaves a country
Population
composition
How crowded a
country is, has little to do with its level of economic development. For
example, both Bangladesh and Japan are very densely populated but Japan is far
more economically developed than Bangladesh.
To understand the
role of people as a resource, we need to know more about their qualities.
People vary greatly in their age, sex, literacy level, health condition,
occupation and income level. It is essential to understand these
characteristics of the people. Population composition refers to the structure
of the population.
The composition of
population helps us to know how many are males or females, which age group they
belong to, how educated they are and what type of occupations they are employed
in, what their income levels and health conditions are.
A POPULATION
PYRAMID
·
The
total population divided into various age groups, e.g., 5 to 9 years, 10 to 14 years.
·
The
percentage of the total population, subdivided into
males and females, in each of those groups.
·
The
shape of the population pyramid tells the story of the people living in that
particular country. The numbers of children (below 15 years) are shown at the
bottom and reflect the level of births. The size of the top shows the numbers
of aged people (above 65 years) and reflects the number of deaths.
·
The
population pyramid also tells us how many dependents there are in a country.
There are two groups of dependents — young dependents (aged below 15 years) and
elderly dependents (aged over 65 years). Those of the working age are the
economically active.
·
The
population pyramid of a country in which birth and death rates both are high is
broad at the base and rapidly narrows towards the top. This is because
although, many children are born, a large percentage of them die in their
infancy, relatively few become adults and there are very few old people. This
situation is typified by the pyramid shown for Kenya.
·
In
countries where death rates (especially amongst the very young) are decreasing, the pyramid is broad in the
younger age groups, because more infants survive to adulthood. This can be seen
in the pyramid for India. Such populations contain a relatively large number of
young people and which means a strong and expanding labour force.
·
In
countries like Japan, low birth rates make the pyramid narrow at the base.
Decreased death rates allow numbers of people to reach old age.
CONCLUSION
Skilled, spirited and hopeful young people
endowed with a positive outlook are the future of any nation. We in India are
fortunate to have such a resource. They must be educated and provided skills
and opportunities to become able and productive.
……...the end………
No comments:
Post a Comment