The international communities are
well aware and seized of global environmental and ecological problems and
various efforts have been initiated to control global warming and halt probable
climate change. There are several organization, government agencies,
intergovernmental agencies, non-government organizations (NGO) which have
undertaken various action plan and projects to study the relationships between
man and environment interactions between man and nature, the environmental
problems resulting there from and remedial measures therefore.
Sunday, June 21, 2015
Sunday, June 14, 2015
Major Global Problems
The most significant global
environment problem faced by the world community is related to global
environmental changes consequent upon global warming resulting from a host of
causal factors viz. ozone depletion, emission of greenhouse gases at alarming
increasing rate, deforestation etc. the probable net result of global warming
would be climatic change at local, regional and global levels.
Saturday, June 13, 2015
Acid Rain
Acid rain fall-out of acids
caused by sulphur dioxide and nitrogen oxides with rainfall and thus increases
in the amount of acidity of rainwater. As pointed out above rainwater is not pure because
atmospheric carbon dioxide is dissolved in the rainwater which thus because
moderately acidic, the pH being generally 5. The water with Ph value of 7.0 is
called neutral water whereas the pH value below it makes the water alkaline.
The water becomes more injurious when the pH fall below 4.
Sulphur dioxide emitted from man
made sources in large quantities into the atmosphere combines with water to
form sulphur and sulphuric acids (H2SO4).
These acids fall on the earth's surface with rainfall and thus the fall of
highly acidic water are called acid rain. The pH of rainwater in some
localities of the USA mainly in West Virginia has gone down to 1.5 pH of
rainwater in Europe is as low as 2.4 whereas the normal range of pH of neutral water
must be 7.0.
The main sources of acid rains
are oxides of sulphur and nitrogen which are emitted from industrial
establishments and different types of vehicles. These pollutions are spread in
atmosphere by wind and from acids after reacting with water in the atmosphere.
It may be pointed out that acid rains are not confined to the source areas of
the emissions of oxides of sulphur and nitrogen rather they cover much larger
areas far away from the source pollutants being in gaseous phase are carried
away and spread over larger areas through winds and clouds. For example, oxides
of sulphur and nitrogen spewed from several mills in Germany and U.K have
caused widespread acid rains in Scandinavia countries with the result most of
the lakes in Scandinavia countries have lost their biological communities and
are now biologically termed as dead lakes.
Dead lake means destruction and
death of all aquatic lives including plants and animals in lakes, ponds, and
rivers. Acid rains also affect human community adversely, though the mode of
human disease and death due to acid rains has not been properly understood as
yet. The productivity of soils is also significantly lowered because of acid
rains as increased acidity destroys mineral elements and other nutrients of the
soils.
Acid rain is not a local problem
or a problem of a particular country, rather it is an international problem
because air pollutants emitted from a particular country are carried in the
atmosphere by the winds and are spread over other countries. Thus the problem
of acid rains should be tackled at international level.
Friday, June 12, 2015
World Common Environmental Issue
Present world is facing many
environmental hazards and being problematic living support system of entire
living beings. Environment is the common house for entire living and non-living
things. But, the right of the other except man is losing by the human self-fish
activities. Declining environmental condition is common concern matter all
developed and developing countries that made think about improvement of
environment condition for sustainable development and balance between sources
and human. As a result many international conferences are held in order to
manage environment depletion condition. These conferences find out the common
issues and declare to manage.
1 Global change: - climate
change, global warming, ice melting and sea level rising, change in atmosphere
gaseous composition, change in water, air and soil quality, land use change,
ecosystem services change and life system change.
2 Technological and Toxic
Hazards, Incidence of disease infection
3 Natural resource degradation,
life support bio-resource deletion, deforestation, desertification and land
degradation
4 poverty, regional disparity,
and inequality of development pattern
5 Loss of biodiversity and threat
to cultural heritage
6 Solid waste management and technological
appropriateness
7 Regional cooperation and world
unity for long term solution
Monday, June 8, 2015
Common Goals of Environmental Policies
World circumstantial degradation of natural resources, wild animal, and environmental pollution has been brought every community, fund and organization and nation for conservation of environment and natural resources for long time sustainable development in common practice. Declining condition of natural environmental source, highly pressure of population, atmosphere pollution, industrial production, and production of greenhouse effect gases negatively effects on global climate change bringing challenge for biosphere global ecological situation make the world’s developed and developing countries in united for conservation of environment, sustainable development of economics, human and security for entire living system by making polices.
There has been seen many international conferences held for improve and conservation of environmental situation. Many policies and strategies have made these conferences and still applying it all the developed and developing countries.
American geologist George Perkins published the book ‘Man and Nature’ in 1864 that notified to the American government about negative effect on ecological situation by the uncontrolled grazing and rapid chopping down tree on slope area. This is known as the first practice for environmental conservation. This message helped to the American government to build national policies in 1873 for conservation of forest and started to control the hunting activities of wild animals and species.
The world’s common policies for conserve environmental situation
1 Maintains the essential ecological processes and life support systems on which we survive.
2 preserve the genetic diversity on which ecological processes of life support system are based.
3 Ensure the sustainable utilization of species and ecosystems which support millions of biological communities.
Sunday, June 7, 2015
Environmental Education
We know that, we can't live with
out good environmental situation. But the condition of the environmental
situation is getting worse day to day in our life. The awareness for improving
environmental situation has been starting in 1960, and held many international
conferences for conserve of environmental situation. But environmental
situation is not in improving condition. These conferences declared many
policies and strategies to improve environmental situation and invest much properties.
Human Environmental international conference made international level
government policy for conservation of biosphere in 1972 (Sweden).
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