Effects of climate change on
forests in Africa: Why Ghana must protect her forest cover
By
Mawutodzi Kodzo Abissath
There
is this funny African proverb that says: “You don’t value your own buttocks
until you develop a boil over there.”
It
seems to me that sometimes man takes nature for granted. But nature is very,
very kind to man. On Wednesday, 16 March 2016, a two-day international forest
conference took off here in Accra the capital city of Ghana. Held under the
theme “Forest for the future of New Forest for Africa”, the event was opened by
H.E. Kofi Annan, Former Secretary-General of the United Nations.
Coincidentally, H.E. John Agyekum Kufuor,
Former President of Ghana is the current UN Special Envoy on Climate Change.
Further, H.E. John Dramani Mahama, current President of Ghana is Co-Chair for
UN Sustainable Development Goals (SDGs 2030). These are positive facts about Ghana
which must be celebrated.
Talking
about forests in Africa, Dr. Kofi Annan lamented that the growing demand for
wood and other forest products and the activities of illegal miners popularly
known as ‘galamsey’ and illegal timber operators were destroying Africa’s
forest cover. In fact, he disclosed that
about 130 million hectares of Africa’s “forest cover has been lost since 1990.”
The
Former UN Secretary-General called on conference participants from 13 countries
made up of experts and stakeholders from Europe, America and the mother
continent to discuss possible ways of protecting the continent’s forest cover.
This could be done by addressing destructive practices, including illegal
logging, illegal mining, wildfires, and unsustainable agriculture.
In
Dr. Annan’s view, Africa could generate about $170 billion annually if about
350 million hectares of degenerated forests could be restored. He recalled that
at the 2015 United Nations Climate Change Conference, COP 21, held in Paris,
France from 30 November to 12 December last year, African leaders pledged to
restore a total of 100 million hectares of deforested and degraded landscapes
within Africa by 2030.
For
the purpose of this article this writer wishes to share some fascinating facts
about the value of forests. These are findings of a study recently conducted by
the United States of America Environmental Protection Agency EPA about
Forests and Climate.
First
of all, the researchers who undertook the study observed that (…) “Perhaps the
most alarming fact is that looking at our earth’s history a slight change in
the Atlantic Ocean current was what actually caused the downfall of the Roman
Empire.”
They
stated that the lack of rainfall also caused the Sahara Desert to enlarge from
a small area so that now it is sixteen times larger than a country like France.
“This happened because there were no longer spring rains at the head of the
Nile River and thus no yearly floods at the delta which brought new soil and
moisture to grow enough food for Rome,” the researchers noted.
About
the value of forests specifically, the researchers stated: “Forests are most
valuable RENEWABLE energy. Forests
clean, purify, humidify and cool the air you breathe.” The study indicates that
forests affect our climate and therefore our weather in three ways thus: “they
lower temperatures, reduce energy usage and reduce or remove air pollutants.”
Further,
the study underscores the fact that “each part of trees contributes to the
Climate Control from roots to leaves.” It was explained that leaves help turn
down the thermostat to cool the air through a process called
‘evapotranspiration’. Evapotranspiration is said to be the combination of two
simultaneous processes: evaporation and transpiration, both of which release
moisture into the air.
“Researchers have found that planting one tree to the
west and one to the south of a home can significantly reduce energy consumption.”
May be most Ghanaian scientists know about this fact. But as a layman, I find
this outcome of the study very instructive indeed. Perhaps some Ghanaians who may
have already built their own houses or may want do so in the future can
determine where to plant trees in their homes.
The US EPA’s study has established
other vital facts about forests. For instance, about what forests ecosystems do
for man, it is revealed that, “Forests along with grasses, crops and plants
produce 50% of the World’s Oxygen. The remaining 50% is supplied by Marine
Phytoplankton and sunlight,” adding that the percentages vary in accordance with
the weather. It is explained that from the
atmosphere, forest streams provide 50% of America’s “pure drinking water,” the
study reveals.
How about Ghana? Do we know what
percentage our forests provide to the so-called “pure water” hawked on the
streets of our cities? This knowledge may go a long way to empower our law
enforcement agents to reason out with illegal chain saw operators to stop
destroying Ghana’s forest reserves ‘by
heart’.
Further more, EPA’s study reveals
that during evaporation, water is converted from liquid to vapour and
evaporates from soil, lakes, rivers and even pavement. Then during
transpiration, water that was drawn up through the soil by the roots evaporates
from the leaves.
There is no doubt that some of these
facts are common knowledge to many scientists and environmental experts in
Ghana and Africa. But the US EPA
researchers disclosed that, “a large oak tree is capable of transpiring 40,000
gallons of water into the atmosphere during one year.” The study further
indicates that annual cooling costs in America were reduced by eight to 18
percent while annual heating costs were reduced to two to eight percent.
“Forests work 24 hours every day,” the researchers pointed out.
If forests are working 24 hours every day, do
human beings acknowledge the role of forests for their well being so as to
express gratitude to them? The US EPA’s
study attests that leaves also filter particles from the air, including dusts,
ozone, carbon monoxide and other air pollutants.
The American researchers added one
fact that should be known to even Ghanaian Junior High School students. “Through
the process of photosynthesis, trees remove carbon dioxide (a greenhouse gas)
and release oxygen into our air.” But
the study specifies that, “Trees store the carbon dioxide, called carbon
sequestration, and – depending on the size of the tree – can remove between 35
to 800 pounds of carbon dioxide each year,” the researchers concluded.
Basically, the object of this
article is to appeal to fellow Ghanaians especially galamsey engineers, rat hunters
who set bush fires, charcoal producers, illegal chainsaw operators and all
those who take delight in forest destruction to have some mercy on Ghana’s
forest cover.
As Dr. Kofi Annan pointed out in
his address at the international forest conference cited above, “We should show more commitment in the fight
against activities that destroy the forest else its implications could
overwhelm the entire continent.”