Chapter 7[1]. Human Population and the Environment

8/6/2019 Chapter 7[1]. Human Population and the Environment

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Ch. 7. Human populationCh. 7. Human population

and environmentand environment--JyotiJyoti JadhavJadhav


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Exponential Growth in PopulationExponential Growth in Population

DateDate PopulationPopulation Doubling timeDoubling time5000 BC5000 BC 50 million50 million --

800 BC800 BC 100 million100 million 4,200 years4,200 years

200 BC200 BC 200 million200 million 600 years600 years1200 AD1200 AD 400 million400 million 1,400 years1,400 years

1700 AD1700 AD 800 million800 million 500 years500 years



2000 AD2000 AD 6100 million6100 million 51 years to double51 years to double

2050 AD2050 AD 8900 million8900 million 215 years to double215 years to double


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Indias populationIndias population

Age wise populationAge wise population

WorkingpopulationWorkingpopulation-- age groupage group14 to6014 to60 yearsyears

Dependable populationDependable population-- age groupbetweenage groupbetween00to14to14 years andage groupyears andage groupabove 60above 60 yearsyears

Sex wise compositionSex wise composition

Numberoffemales per1000male populationNumberoffemales per1000male population

KeralaKerala--1058 females per1000males1058 females per1000males

HaryanaHaryana--861 females per1000males861 females per1000males


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Quality of lifeQuality of life

EconomicEconomic

SocialSocial

HealthHealthPhysicalPhysical

NaturalNatural

PoliticalPolitical


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EconomicEconomic

Per capita incomePer capita income

Distribution of National IncomeDistribution of National Income

Economic securityEconomic securityJob availabilityJob availability


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SocialSocial

FamilyFamily

CommunityCommunity

Social securitySocial securityCultural developmentCultural development


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HealthHealth

PhysicalPhysical

MentalMental

Food quality (balanced diet)Food quality (balanced diet)


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PhysicalPhysical

Housing conditionHousing condition

TransportconditionTransportcondition

Communication facilitiesCommunication facilitiesPublic servicesPublic services

AestheticsAesthetics


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NaturalNatural

Quality of AirQuality of Air

Quality of drinking waterQuality of drinking water

Solid waste managementSolid waste management


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PoliticalPolitical

Stable GovernmentStable Government

Human RightsHuman Rights

Political pressurePolitical pressure


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Population projectionPopulation projection

The prediction of future populations based on theThe prediction of future populations based on thepresent agepresent age--sex structure, and with the presentsex structure, and with the presentrates of fertility, mortality, and migrationrates of fertility, mortality, and migration

r = br = b -- d+_ md+_ m

where r = total growth of populationwhere r = total growth of populationb = total births in that yearb = total births in that year

d = total deaths in that yeard = total deaths in that year+_ m = Positive or negative effects of+_ m = Positive or negative effects of

migrationmigration


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Arithmetical Increase methodArithmetical Increase method

PPnn = P= P00 + (n x i)+ (n x i)

Where, PWhere, Pnn = Population after n= Population after nthth decadedecade

PP00= Present Population= Present Populationn = Number of decadesn = Number of decades

i = Growth rate of population peri = Growth rate of population per

decadedecade


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Geometrical increase methodGeometrical increase method

PPnn= P= Poo[1+i/100][1+i/100]nn

Where PWhere Pnn= Population after n= Population after nthth decadedecade

PP00=Present population=Present population

n = Number of decadesn = Number of decades

i = Growth rate per decadei = Growth rate per decade


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Incremental increase methodIncremental increase method

PPnn=P=P00+n+nii+(n(n+1)/2 x r)+(n(n+1)/2 x r)

Where PWhere Pnn = Population after nth decade= Population after nth decadePP00 = Present population= Present population

n = Number of decadesn = Number of decades

r = Average increase for twor = Average increase for two

consecutive decadesconsecutive decades

i=Growth rate per decadei=Growth rate per decade


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Environmental EducationEnvironmental Education

Defn:Defn: The method in which informs aboutThe method in which informs aboutthe needs to protect the environment andthe needs to protect the environment andthe measures taken to protect it and alsothe measures taken to protect it and alsoabout the ill effects of over exploitation andabout the ill effects of over exploitation andabuse of the environment is called asabuse of the environment is called asEnvironmental EducationEnvironmental Education


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Value education

Learning basic facts about humanity

Improve value system that she/he holds

and put to use.Global stage


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HIV/AIDS

Caused by human HIV

Leaves humans susceptible to tumours,

infectionsTransmitted through blood transfusion,contaminated needles, childbirth

Global problem,33.2 million people in 2007


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Scope ofEnvironmental EducationScope ofEnvironmental Education

It is studied for academic purpose onlyIt is studied for academic purpose only Imp. Programs by ministry are:Imp. Programs by ministry are:

1.1. Environmental education and trainingEnvironmental education and training

2.2. Formal environmental educationFormal environmental education3.3. NonNon--formal environmental educationformal environmental education

4.4. National green corpsNational green corps

Environmental awareness

Environmental awareness

UN decade for sustainableUN decade for sustainabledevelopment(2005 to 2014)development(2005 to 2014)


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Social security and Human rightsSocial security and Human rights

Each person in India has the fundamentalEach person in India has the fundamentalright given by the constitution ofIndia toright given by the constitution ofIndia toget social security.get social security.

Every person of any religion, creed, caste,Every person of any religion, creed, caste,gender gets these fundamental rights.gender gets these fundamental rights.These are also known as Human RightsThese are also known as Human Rights


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Fundamental rights include:Fundamental rights include:

1.1. Rights of life liberty and security of aRights of life liberty and security of a

personperson2.2. Right to own propertyRight to own property

3.3. Right to freedom of opinion andRight to freedom of opinion andexpressionexpression

4.4. Right to have an adequate standard ofRight to have an adequate standard oflivingliving

5.5. Right to education, freedom of thought,Right to education, freedom of thought,

conscience and religionconscience and religion6.6. Right to freedom from torture andRight to freedom from torture and

degrading treatmentdegrading treatment


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Role ofIT in EnvironmentRole ofIT in Environment

Remote sensing techniquesRemote sensing techniques

Information about minerals, forest fires,Information about minerals, forest fires,

endangered species, quality ofwater, et

c.endangered spe

cies, quality ofwater, et

c.

Weather forecastingWeather forecasting

Biotechnology, Bioengineering, GenomeBiotechnology, Bioengineering, Genome

sequencing, DNA database, et

c.sequen

cing, DNA database, et

c.

Study of environmental changesStudy of environmental changes

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Chapter 7[1]. Human Population and the Environment