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ENVIRONMENTAL PROBLEMS IN ASIA
Environmental Problems in Asia
Two major factors:Unparalleled economic development of
the different countries in AsiaIncessant increase of human
population
Population Growth
High population density
More lands to
be cultivate
d
Desertification
Salinization
Alkalization
Intensified use to meet food supply
needed
Increasing population
Decreasing space for human occupancy
Lack of space for occupancy
Land conversi
on
Land conversion
Destruction of natural habitat
of different species
Rapid population
growth
Problems in waste disposal
Contamination
Land degradation
Remember SAD
AAZLINNOTISISALINIZATION
ZLAAKATNILOIALKALIZATION
NRDSCEIEIFIATTODESERTIFICATION
Salinization and Alkalization When salts come to the surface of
the land or are carried in by water When water well are overused, the
water table lowers and saltwater or brackish water start to permeate
Bangladesh
Desertification
Transformation of fertile land into a desert through soil erosion or overcultivation
If it persists will bring about serious health hazards; food scarcity, dust storms
China
Overgrazing
More animals
More pressure
As the size of animal herds increases, more pressure is wielded on the grazing lands
Iraq: sustains 11 million sheep which exceeds the lands’ grazing capacity
ZIIBRANNAUTOURBANIZATION
Urbanization in Asia
Led to the proliferation of depressed or slum areas
Health risks
Bad sanitati
onEtc.
Noise pollutio
n
Stress
Hearing problems
SWEAT AISSODLPWASTE DISPOSAL
Problem on Solid waste disposal
Two types of wastes:DomesticIndustrial
Contami-nation of air, water, and soil
Suitable facilities
Ris
e
Lackin
g
Health risks, degradation of the environment
Loss of Biodiversity
Introduction of non-indigenous species of flora and fauna in a particular region
Pollution of soil, water and air
Rapid growth of the population
Intensification of the use of land
Deforestation
Exploitation of natural resources
?
LOLOUNPTIPOLLUTION
Pollution
Air - sulfur & coal- Traffic in major cities (Beijing, Korea,
etc.)- gas pollutants affect the quality of air- lead to respiratory diseases
Air pollutio
n
Acid rain
Disruption of chemical balance
Corrosion of buildings, etc.
Ozone depletion
Harmful ultraviolet
rays
Heavy concentration of CO2 and other gas pollutants
Global warming
Water Pollution
Two most common water pollutants:Solid wasteUntreated wastewater from industries
and factories Marine Water:
Oil spillsResidues of pesticidesRed tide
dinoflagellates may lead to poisoning of people
Water Pollution
FreshwaterPollution caused by rapid urbanization
and industrializationIndustrial effluents, heavy chemicals
and solid wastes directly released to inland bodies of water
Mine tailings (rejected materials from mining processes)
Siltation
Water Pollution
FreshwaterSiltation○ Accumulation of fine-grained sandy
sediment carried by water
two main causes:1. Deforestation2. Soil erosion
○ Tonle Sap
Clearing of forest trees Loss of natural habitat
flora and fauna endangered Causes of deforestation:
Commercial loggingSlash and burn agricultureCutting down of trees for fuel wood
and forest fires
NEODFTESAROTIDEFORESTATIONForest
destruction
Soil erosion, flooding, siltation,
sedimentation
North Asia: environmental problems
Pollution: due to waste- radioactive uranium plants in Kazakhstan
- waste dumped in rivers: threaten water source
- extensive soil erosion
Uranium radioactivity causes mutations and growth of cancer cells
Uzbekistan’s water is under radioactive threat
THE IMPORTANCE OF ECOLOGICAL BALANCE
IN ASIA