Lecture 2_natural Resources

8/7/2019 Lecture 2_natural Resources

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Resources we have..

Ravages we make


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Resources originate from and reared in

Thickness Links

Ecosystems:

Resource producers

vs processors

Renewable

resources

Non-renewableresources

Atmosphere

Hydrosphere

Lithosphere

Biosphere


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Balance (need for sustainable lifestyle

Human Development

Indices

Increased life /

longevityIncrease in per capita

income

Increase in scientific

advancements

Ecosystem Quality

Indices

Population stabilization

Biodiversityconservation

Protected, prolonged use

of resources

Decreasing pollution,degradation


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Resource utilization?

Collection

UtilizationDisposal

Transport

Identification

Processing

Missing link

Population: 4% - Resource utilization: 25%


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Resources: Major & minor

WaterNatural

Managed

Land

ForestsMines

Air

EnergyRenewable

Non-renewable


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Water resources and their magament

Statistics

Surface cover: Water covers 70 % of earths surface

Fresh water: 3 % fresh water

Available water: 0.3 % is usable form

Realistic

Population

Inefficient irrigation

Pollution

Water shortage: Major problem after global warming

Water crisis: we need 17% more water than available

by 2020


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Where it is going:

Global agriculture 70%

Indian agriculture 90%

Precision irrigation

Less water-intensive crops Desalination: using distillation and reverse osmosis

Drought tolerant varieties


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WaterWars Example of yellow river

The example of Aral sea

Game turns violent

First documented cyber-

terrorism in water industry

2008

ARAL SEA SATELLITE IMAGES

1985


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Managed water resources

DamsTurbine 1832

Peak 1970

Purpose

Irrigation

Hydro-power 19%

Flood controlInlandnavigation

Effect

Loss of forests

Loss of wild life

Loss of habitat

Human inducederosion

Sedimentation

Displacement a

process rather than anevent

Loss of livelihood ofculturally vulnerable

ethnic groups


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Narmada river Dam

NVDP 30+ 3,000

Deforestation in the

catchment areasCompensation / life of

destitution

Rehabilitation

EIA since 1987

Arid regions

Irrigation budget

Droughts

Biomass

putrification

Costing

Siltation

Hydro power & the concerns


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Case studiesThe Times

September 27, 2007

Three Gorges Dam is a disaster in

the making, China admits

Reservoir-induced seismicitymay have been

what happened at California's Oroville Dam, in

the foothills of the Sierra Nevada. The largestearthen dam in the U.S., it was constructed on

an active fault line in the 1950s and filled in

1968. Seven years later, when the reservoir's

water supply was restored to full capacityafter

engineers lowered it 130 feet (40 meters) formaintenancethe area experienced an unusual

series of earthquakes. U.S. Geological Survey

seismologists subsequently found a strong link

between the quakes and the refilling of the

reservoir.

ScientificAmerican:

March 25, 2008

China's Three

Gorges Dam: An

EnvironmentalCatastrophe?


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Solutions

Engage in participatory, multi

point analyses

Transform project-effected to

beneficiaries

Access of information to all

stake holders

Participation in decision

making

Corrupt practices

Lecture 2_natural Resources

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