by Chuck Hall
When Polynesian settlers arrived at Easter Island, they
found a tropical paradise waiting for them. Archaeological evidence shows that
when the Polynesians landed on that island, it was covered with a thick forest
of abundant flora and fauna. A new study suggests that these settlers didn’t
arrive until about 1200 C.E. At the peak of their civilization, the island
supported nearly 7,000 people. Yet by the time Dutch colonizers arrived in 1772,
all they found was the eerie stone statues that dominate the island to this day,
and a few dozen starving survivors from the original Polynesian colonists. In
less than six centuries, the original settlers turned the island into a
wasteland. Today, the island is nothing but a barren field covered with grasses
and those enigmatic stone statues.
I
wonder what happened that would lead these islanders to think that their rapid
and massive deforestation was a good idea? Surely at some point in time they
must have realized what was happening to the forests around them. There are no
trees at all on the island today. Someone had to have been the one to cut down
the last tree. I wonder what went through his mind as he put the axe to the last
tree trunk on the island? Did he look upon his action with regret and remorse
for what once was, or did he just look at it as a way to squeeze the last ounce
of productivity out of the last resource on the island? Did the islanders
realize that the destruction of the forest meant their own destruction, or did
they just think that the cutting of the last tree was “business as usual” and
that anyone who objected was needlessly being an
alarmist?
The sad story of Easter Island is not
unique in history. For decades, historians wondered what happened to the Mayan
civilization. The Mayans had a sophisticated urban culture that in many ways
rivaled our own, and in some ways (astronomy, for example) exceeded ours. Yet in
900 C.E. they all suddenly abandoned their cities for the jungle. For years the
reason for this abandonment had been a mystery, but archaeologists today have
reached a general consensus on what they think happened.
The largest of Mayan cities had a population of between
10,000 and 20,000. All of those people had to be fed. The preferred style of
Mayan agriculture was to slash and burn the jungle to create arable fields for
planting. By planting the same crops year after year, the nutrients in the soil
were quickly depleted. After a few decades of this practice, the soil within
walking distance of all the cities had been exhausted. The fields had to be
moved so far away from the cities that it was easier simply to abandon the
cities altogether. In other words, the cities were abandoned because of an
ecological disaster caused by non-sustainable agricultural
practices.
There is evidence that other great cities
of the past, such as Rome and Alexandria, had an element of ecological disaster
in their falls as well. Throughout history, when civilizations have failed to
live in a sustainable manner, the inevitable result has been the collapse of
those civilizations.
We
stand on the brink of another potential ecological disaster that would make the
collapse of an ancient city-state pale in significance. In the past, when
civilizations fell, the refugees could always move elsewhere and start over. The
problem now is that we are a global civilization. There is nowhere else to
go.
Are we, as a species, staring at the last tree with an
axe in our hands?
Chuck Hall is a graduate student and author. His
latest book, Green Circles: A Sustainable Journey from the Cradle to the
Grave, is now available at the Culture Artist Web site at
www.cultureartist.org. You may contact Chuck by email at:
chuck@cultureartist.org.