Changing the Face
of the Forest: Does Logging Imitate Fire?
Mike Pedde
Both forest fires and logging can change the
dynamics of a forest ecosystem, often with very dramatic results. Logging is an
everyday occurrence around the world. Most people (in North America anyway)
remember the 'tragedy' of the forest fire in Yellowstone National Park a few
years ago. But do fires and logging impact the life of the forest in the same
way? A very complicated question, with no easy answers. In a way it might depend
on whom you ask. Most foresters today will argue quite forcefully that current
logging methods do imitate the effects of wildfire, but others would disagree
wholeheartedly. To answer this question, perhaps we need to look at the ways
logging and fires change the face of the forest.
To begin with, we must ask questions. Are
forest fires solely a destructive force? We've all seen the pictures of Bambi
and Thumper running from a forest fire. For fifty years Smokey the Bear's
message has been of fire as a damaging, destructive force, but did Smokey give
us the whole picture? There is no question of the soundness of Smokey's message
as fire can cause damage to property, create loss of timber, loss of life, but
is there more to the role of fire in the forest? Can we/ should we prevent
forest fires? While we must always continue to protect people, property and
adjacent lands from wildfire, we can' t eliminate forest fires - at best we can
postpone them. Should we even attempt to do so? To answer this question, we need
to look at the ecology of fire, or the role that fire plays in the workings of a
forest environment.
The forces of rain, wind and fire have molded
the earth since the dawn of time. We can trace wildfires back 360 million years.
The evidence of these is buried deep within the coal beds of the Carboniferous
period. Since the retreat of the glaciers 10,000 years ago, both humans and
lightning have ignited forest fires. Every day there are eight million cloud to
ground lightning strikes around the world, with 500 thousand lightning strikes
occurring in forests every day - only a fraction of these cause forest fires.
Native peoples have lived in North America for
thousands of years. They lived along the major river systems, just as people do
today, and it is here that the influence of aboriginal people was most
pronounced. They used fire to preserve grasslands, shrub lands, berry crops and
open forests in some valleys, and to drive game. The pattern of vegetation at
the turn of the century could only have resulted from a human controlled,
frequent, low intensity fire program. In many places in North America, lightning
starts of forest fires alone could not account for the existence, over thousands
of years, of this vegetation pattern.
While other animals cannot start fires, they
can be a factor in the occurrence of fire. For example, outbreaks of insects can
kill hundreds of trees and create optimum conditions for fire to start or
spread. Beavers may help prevent fires by building large ponds that can act as
fire breaks, but beavers may also contribute to the possibility of fire by
injuring or killing trees which become fuel for fires. Animals grazing on
preferred species of plants for food may leave behind only flammable, oily and
resinous plants.
However, European people brought with them
different attitudes about fire; at first they used fire as a means to clear
land, but then they saw fire as a danger to settlement and people sought to
control it. Since 1940 the annual area burned in Canada has dropped to less than
10% of known historic levels. This has been caused by changing land use patterns
(more towns, increased tourism), actively putting out all forest fires and the
idea that we must maintain wild areas in a 'pristine' condition.
The first park wardens in western Canada were
hired in 1909, primarily to put out forest fires. There was a belief that all
wildfires were devastating to the forest and needed to be stopped as soon as
possible. They saw fire as a 'foreign invader', one that threatened the forest
system within the national parks and beyond. Since WW II, the technology and
equipment used to find and stop wildfires have improved dramatically. Modern day
forest fire suppression techniques employ everything from shovels and axes to
bulldozers, dedicated aircraft, satellite imagery, and computer systems. So, we
have eliminated forest fires in our parks, and to a large part in forests in
general. How is this affecting the forests?
There are many classifications of forest types
in Canada, from boreal forests in the north to Carolinian forests in the south.
However, each ecosystem is a complex combination of plant and animal life, as
well as soil, water, and sunlight. Each species of plant has particular habitat
requirements, such as specific amounts of light, heat, soil nutrients, and
water. Animals also have specific habitat needs, such as the right amounts of
food, water, cover, and space to live. Different plants and animals have
different requirements, and together they create different communities or
ecosystems.
Succession is the natural orderly change in
plant and animal communities over time. This occurs when new environments are
formed, or old ones are disturbed by forces such as fire. During succession,
tall plants create shade. Layers of moss insulate the soil and cause the
temperature of the soil to drop. Ever more nutrients and minerals become tied up
in living and dead plant material. Changes in the environment change the
suitability for growing for different plant species, so the kinds and numbers of
plants change as the successional stages change. Wildlife populations change
with successional changes too. Some animals find their homes in the shrub stages
of early forest succession, while others need large spaces of mature forest.
Many species require a mixture of habitats. For example, snowshoe hares feed on
the young shoots of willow and aspen from the shrub stage, but the hares require
the cover of mature forests, especially in the winter. The abundance of wildlife
in the forest is a result of the variety of habitats provided by the forest
mosaic.
As much as the environment affects the kinds of
plants and animals that live there, plants and animals also affect the physical
environment. Plants reflect and absorb sunlight, which changes the growing
conditions on the forest floor. Mosses create a layer of insulation over the
soil, which lowers the soil temperature and reduces the depth of the active soil
layer. These effects combine to slow the rate of decomposition of the dead and
decaying plant material. The build-up of un-decayed plant material is an
important feature of the forest as it contributes to the occurrence of fire and
influences plant succession. Therefore, the complex, changing forest mosaic is
created and maintained by environmental changes, fire and other disturbances,
and succession.
For example: After a large fire, some mature
trees and most of the ground vegetation will be consumed. However, some
tree species such as Douglas fir or white pine have thick bark to protect them
from the heat of low intensity fires. Fire opens the forest canopy and allows
more light to reach the soil. At the same time, bark beetles have built in smoke
detectors and heat sensors that allow them to find burnt areas. These
wood-boring beetles fly through the smoke and flames in search of burning trees.
Trees that the fire has killed or damaged cannot resist these insects, and so
supply an abundant source of food. Changes in soil nutrients and temperatures
are some of the first environmental changes caused by fire. When plants and dead
vegetation are burned, the minerals trapped in their leaves, stems and wood are
released and returned to the environment as gases and ash. The ashes left are
rich in calcium, phosphorous, potassium and other minerals. These minerals,
previously trapped in decaying vegetation, enrich the soil. Fire burns part of
the organic mat on the soil as well, blackening the soil surface and reducing
the insulating qualities of the active soil layer. These changes cause the soil
to absorb more of the sun's heat. The resulting warmer, better drained mineral
rich soil provides very good conditions for plant growth.
The constant presence of fire has caused many
species to adapt to take advantage of the temporary changes at their site. This
includes such things as thick bark, protected buds, fire stimulated flowering,
and the storage of seeds in the soil. Some serotinous cone species (e.g.,
lodgepole pine or jack pine) have cones that are sealed with a resin until a
fire; the heat from the fire melts the resin, releasing the seeds. These pine
seeds start to grow about the same time that the grasses and other green plants
start to sprout. Pine cones release as many as two million seeds per acre, and
although the fire burns many and small mammals eat others, as many as a thousand
pine seedlings per acre can be found a few years later. Some species, like the
intermountain aspen in western Canada, do not renew by seed or expand over time
through various stages. Aspen is found in clusters of identical trees that have
grown from root suckers extending from a common root. Scientists believe some
root clones to be hundreds or thousands of years old. Aspen root suckering
occurs after a low intensity fire creates the proper conditions for growth.
All this growth creates a rich blanket of
vegetation that quickly covers the burned out area. As the population of bark
beetles increases, they, in turn, become food for several species of
woodpeckers, whose populations may increase fifty times. As the forest recovers
from the effects of the fire, the post fire succession of grasses, forbs,
shrubs, followed by trees such as aspen, birch, jack pine, black spruce, douglas
fir or lodgepole pines provide the variety and quality of habitat (especially
critical winter habitat) necessary to support a variety of plants and animals.
New shrubs provide nesting and feeding sites for songbirds. The shrub stage of
succession may provide habitat for small mammals and ground nesting birds as
well. These animals support large numbers of foxes, weasels, fishers and marten.
New bushes will provide ample food for black bears and grizzly bears. If
hardwood trees and shrubs are available, elk, deer, moose and snowshoe hares
will also find an abundant food supply. As their numbers increase, coyotes or
wolves, bobcats or lynx will also move into the area. The species and abundance
of the plants and animals change depending on the region, but the interactions
of the plants and animals are the same.
Over time, the forest canopy becomes very thick
and crowds out the sunlight from reaching the ground below. Aspen and birch
trees may die after 100-150 years. Animals that need these plants will die or be
forced to move out of the area. Still, this stage provides habitat for ruffed
grouse, some thrushes, warblers, and Sharp-shinned Hawks. As they age, many
early successional trees start to thin out and second generation trees such as
Engelmann spruce, hard maple or red oak start to appear. Some species of trees
cannot live in the shadow of their parents, but this is not a difficulty for
others. Therefore, the early successional species do not grow and the habitat
they provide for others is lost. Animals such as white-tailed deer live
primarily in early to mid successional forest, but others such as moose,
porcupines, red squirrels, northern flying squirrels, spruce grouse and others
will find the 'older' forest to be good habitat.
After many years, the forest has reached a
climax stage. The original tree species have all died and been replaced by
others. Increased sunlight has stimulated the growth of new trees on the forest
floor. Large gaps have appeared in the forest canopy, and small trees and dead
branches accumulate. The forest is now highly flammable, and again susceptible
to fire. In a natural ecosystem dependent on fire, climax forests are not often
permitted to occur, but if fire is removed from the ecosystem, then the forest
continues to age. In the west, fire helps keep the grasslands, meadows, and
Douglas fir savannas from being replaced by more dense stands of spruce. Across
the prairies, fires help to maintain the quality and structure of the grasslands
as well as the forest. In the east, forest fires have played a vital role in
both the mixed forests of the south, and the boreal forests of the north.
Fires rarely burn evenly. Rather, they burn in
patches, completely burning some parts of the forest and leaving others. This
pattern helps to maintain the mosaic of different successional stages or ages of
the forest. The areas where the different stages of the forest meet are called
edges. Many species of animals require more than one type of habitat (e.g., new
growth for food, mature trees for cover - especially in winter.) Throughout the
world, fire continues to exert a power over plant and animal communities.
The lack of fire in a fire dependent landscape
is causing the vegetation to change. There has not been a 50 to 70 year absence
of fire in our forests in 300 to 500 years. The result is that the forests are
getting older, with less diversity of tree species, open habitats (e.g.,
meadows) are disappearing, and some plant and animal species are disappearing as
well. Generally, these changes lead to a loss of variety or biodiversity in the
forest. Also, complete fire exclusion creates a fire hazard by allowing an
unnatural buildup of forest fuels (dead/ decaying plant matter). High volumes of
fuels can contribute to the severity and extent of wildfires. Such fires can be
intense and catastrophic, destroying habitat and damaging water and soil systems
to the point where they may no longer support pre-fire levels of diversity.
Finally, a lack of fire in the forests can increase the potential for damage to
the forests from insects or other forest diseases. Ironically, the forests are
suffering from a lack of fire - from which we once sought to protect the
forests.
We created national parks with the idea of
preserving representative areas of Canada for future generations to enjoy, on
the basis that National Parks are "dedicated to the people of Canada for
their benefit, education and enjoyment . . . and shall be maintained and made
use of so as to leave them unimpaired for the use of future generations."
However, we have slowly begun to change our understandings of the science of
fire management and how it relates to the ecosystem as a whole. This is not to
suggest that we know everything about ecosystems, but only that we are beginning
to regard them more as whole structures. Therefore, in 1979 they revised the
policy on fires in national parks to recognize fire as a natural part of the
ecosystem. At the same time, uncontrolled fires can have catastrophic effects on
human-inhabited and adjacent areas. We can no longer allow fires to burn
unabated, but we must also recognize that the role of fire is vital to maintain
a healthy forest. A month after a low intensity fire, the area will start to
become green again. Grasses and wildflowers will begin to cover over the charred
stumps of the burnt material. A year later, the forest will have been
rejuvenated, and the cycle will begin again.
Now that we have seen how fire affects the
ecosystem, we need to look at the effects of logging and the impacts that
logging has on the forest. Is all logging bad? Again, this is a complicated
question with no easy answers. Anyone who answers 'yes' to this question has no
right using toilet paper, wooden pencils, nor any of the other myriad products
that come from the forest. Much of Canada's economy is built on the forest
industry. At the same time, current levels of industrialized logging around the
world are having a catastrophic effect on the forests and the planet. In the
words of George
Wuerthner <http://www.tnews.com/text/salvage.html>
(trained forester), "Logging brings all kinds of new influences to a site,
and is not the ecological analogue of a fire or other natural mortality factors,
nor does it assist in the "recovery" of a forest. The tragedy of U.S.
forests is that we allowed foresters to "manage" them. Unfortunately,
there is a dangerous assumption in the U.S. that because foresters work in
forests, they must understand forest ecology. That's like assuming the US
Cavalry had an extensive understanding of Native American culture and values
because it was good at killing them."
Foresters speak of forests largely in terms of
harvestable timber, of board feet, and of allowable annual cut (AAC). To begin
with, we must consider that forests are more than just trees, in the same way
that oceans are more than just water. Forests are complex, dynamic life forms,
self-replicating and self-maintaining. Even to begin to explain the intricacies
of a forest would take many volumes. Forests are, to a large extent, the lungs
of the earth. Photosynthesizing plants take in carbon dioxide and water, and use
these in the presence of sunlight to produce their own food and release oxygen.
Historically, about 1/3 of the earth's carbon has been locked up in the biomass
of the forests, and about 1/3 has been locked up in the algae and plant life
forms of the oceans. The remaining third existed as free carbon dioxide. As we
continue to remove the forests and pollute the oceans, the plants required to
take in this carbon dioxide no longer exist. As a result, more free carbon
dioxide exists in the earth's atmosphere, and leading scientists speak of the
effects of global warming. This is an oversimplification of the facts, but the
basic tenets ring true.
It used to be that the only man-made object
visible from space was the Great Wall of China. For the past several years, we
have been able to see the fires from the rainforest of South America as vast
tracts of forest are slashed and burned. Some scientists have suggested that the
rainforests of South America provide roughly 20% of the world's oxygen supply,
and that the Amazon river basin holds roughly 1/4 of the word's free fresh
water. In Malaysia and Borneo, the forests have existed for millions of years,
evolving but still maintaining their autonomy. The Penan people, the Native
people of this region, have medicinal uses for more than 6500 different plants.
The World Health Organization estimates that 85% of the world depends on plants
for medicines. Many orthodox medicines in use today have their origins in the
constituents of plants. Who's to say that the cures for cancer or AIDS are not
lying in some tropical valley? Or, they may already be gone.
The health and fate of the rainforests have
been a hot topic of discussion in recent years, but many people in North America
are unaware of the health and fate of the forests in their own back yards.
Logging rates in Canada and the U.S. are much higher than the rates of logging
in a country such as Brazil. About ten years ago, a group of people known as
Canada's Future Forest Alliance developed a fact sheet entitled:
Canada: "Brazil of the
North" ?
Size of Canada: 9.9 million square
kilometres
Size of Brazil: 8.5 million square kilometres
Acres of forest clearcut or burned:
Canada: 1 acre every 12 seconds
Brazil: 1 acre every 9 seconds
Percentage covered by forest:
Canada: 45% (4455000 sq km)
Brazil: 41% (3649000 sq km)
Hectares clearcut or burned in 1988:
Canada: 1,021,619
Brazilian Amazon: 1,382,000
Amount of productive Canadian forest that is
now either barren or "not sufficiently restocked"
after clearcutting: 10.3% (458865 sq km)
Amount of Brazilian rainforest that has disappeared: 12% (437880 sq
km)
Estimated number of Aboriginal people and Metis
in Canada's boreal forest: 100,000
Estimated number of Aboriginal people in the Amazonian forest:170,000
Amount of forest officially protected:
Canada: 2.6% (115830 sq km)
Brazil: 9.4% (343006 sq km)
Brazil of the North: The National and Global
Crisis in Canada's Forests.
Canada's Future Forest Alliance, New Denver,
B.C.
Logging practices can be loosely placed into
three categories: selective cutting, clearcutting, and salvage logging. Each of
these has different effects on the forest, and each needs to be looked at
individually.
Many people see selective logging as the most
harmless method of 'harvesting' timber. With selective logging, individual trees
are selected for harvesting and the surrounding forest remains largely
untouched. This method should please even the most ardent environmentalist, but
the way in which the trees are selected needs to be reexamined.
Each living thing is an individual, and
although each individual plant or animal may share certain traits with others of
the same species or biotype, the individual has characteristics that are
uniquely its own. To make a correlation with humans, each of us has our own
special gifts but not everyone has the mind of Albert Einstein nor the speed of
Donovan Bailey. In the forest there are some trees that will grow larger and
faster than the surrounding trees, though they may be of the same age. In
forestry terms, these trees are considered genetically superior.
With selective logging, the person who is
'managing' the forest chooses trees that have reached a certain size, and leaves
the smaller trees behind to grow. In essence, the largest and 'best'
(genetically superior) trees are removed from the forest, and those that are not
as fast growing, as straight, or as tall, are left behind. Over time this cycle
is repeated again and again, each time removing the best of what the forest has
left to offer. Over an extended period of such removal, all the largest and
strongest trees, the best genetic materials to maintain the health of the
forest, are taken away. Eventually, what is left is scrub, an unhealthy forest
of what foresters would consider 'inferior' trees.
Most logging done around the world today uses a
process called clearcutting. Chainsaws and heavy machinery are used to cut all
of the trees in an area, and the branches and smaller wood are left behind to
litter the ground. Some large clearcuts can cover several thousand hectares, and
on this level the micro climate of the area is affected. Roots that once held
the soil in place function no longer, and the soil is left to the mercy of the
winds and the rains. In many areas, the soil is thin or poor, barely covering
the rocky substrate hidden beneath. The life of the forest literally holds the
soil in place, and when the roots are gone, the soil disappears also. In most
parts of British Columbia, the trees are removed from steep slopes with shallow
soils. Where does this soil go when the roots are removed? The soil is lifted
and carried away by the rains, following gravity down to the brooks, streams,
and rivers. This influx of soil particles settles where the current slows,
clogging spawning beds and killing the fish that live in those waters. Removing
trees from the shorelines of these same waterways also removes the shade that
the trees provided. This results in an increase in water temperature, and
changes the quality and quantity of life of those for which the waterway is
home.
Water is an important part of any form of life,
and forests are no exception. Trees suck in water from their roots, and absorb
it through their leaves. A large tree can take in hundreds of litres of water
each day. As the trees exhale, some of this water vapour is released back into
the atmosphere. The water is collected back into clouds, and returns to the
ground again as rain in a continuous cycle. Removing all the trees from an area
interrupts this water cycle. After clearcut logging, the trees are no longer
present to balance the flow of water through the ecosystem. In some cases the
rains continue to fall, but without roots to take in the water, the area becomes
a marsh or swamp. In other areas, since the trees no longer breathe water back
into the air, the rains stop falling and the land becomes a desert.
Legislators have defined "salvage
logging" as the act of logging unhealthy forest stands, considered to have
a probability of experiencing extreme insect and disease infestation or
catastrophic fire. However, no scientific consensus exists for describing an
unhealthy forest, predicting or classifying a catastrophic fire event, or
classifying the resultant damage of an insect and disease. According to Chris
Maser <http://www.uidaho.edu/e-journal/ecoforestry/ijev12n1maser.html>,
"There is no such thing as biological waste in a forest. But, the economic
concept of waste, which excludes non-monetary social values and all intrinsic
ecological values, has spawned the industrial concept of salvage logging,
usually in the form of clearcutting. Clearcutting, in turn, is an economic
expediency in which I find no biological justification--it mimics nothing in
Nature, such as biological investment. We must learn to reinvest part of
Nature's biological capital, including some large merchantable trees, to
maintain soil health, which in large measure equates to forest health. Forest
health, in turn, equates to the long- term economic health of the timber
industry. (To "reinvest" means to leave, to forego some potential
short-term profits in the forest in the form of merchantable trees--both live
and dead--to assure, for future generations, long-term soil fertility and thus
the long-term productivity of the forest.)"
Timber industries and legislators proposed
salvage logging as an alternative way of meeting timber demands and generating
revenues without much opposition from the public. This is because the laws
permitting such logging practices are so vague and confusing. Legislators
suggested that the sales of trees from salvage logging would bring in money
while rendering the forests more "health." Proponents claimed that
harvesting timber would reduce fuel-loading to reduce the intensity of fires and
thin-out forest stands to relieve inter-tree competition. Though this sounds
credible, the criteria for determining what sort of trees would be removed, and
who would make the decision still remains unanswered. On the surface, removing
dead or dying trees seems to be an argument that everyone could back.
Unfortunately, the practice of salvage logging proved to be anything but a
panacea. Some have called salvage logging 'logging without laws'. In the U.S. it
exempts timber companies involved in salvage sales from most environmental laws
including the Endangered Species Act, the Wild and Scenic Rivers Act, the
National Forest Management Act, the National Environmental Policy Act, and the
Safe Drinking Water Act. It allows for clearcutting of huge forest areas. It
also prevents citizens from exercising their right to challenge illegal logging
plans. According to a leaked U.S. Forest Service memo, "Even if a sale is
totally green, as long as one board comes off that would qualify it as salvage,
under the salvage sale plan it should be called salvage. It's a political
thing." Moreover, many logging plans also include a large component of what
is euphemistically called "sanitation" logging, which means that they
will log healthy trees if they have physical flaws such as forked crowns, broken
limbs, and other characteristics typical of ancient trees.
In Canada, several provinces have adopted
policies relating to salvage logging, and the story is the same. In Alberta and
the North West Territories (N.W.T.), for example, the Forests Act is broad
enough to allow salvage of any crown timber (i.e., this could include timber on
non-tenured Crown forest).
Legislation regarding salvage logging, for the
most part, exempts such logging from the amount of trees the government would
normally permit a forest company to cut in a given year. Under Alberta
legislation (Forests Act -- Timber Management Regulation -- Sec. 26) the
Minister "may allow" salvage to be counted against an annual harvest
requirement. This would suggest that salvage would normally not be considered as
part of the harvest, thus supporting the view that such harvesting may affect
the long-term sustainability of the established AAC. Regarding salvage logging
in areas where no AAC has been set (i.e., outside forest management units),
legislation is largely silent, although the N.W.T. have indirectly provided for
a process to ensure that forest values are considered. Harvesting beyond the AAC
could affect the long-term sustainability of the harvest at planned levels.
Adjustments of the AAC in future years to compensate for salvage harvesting in
prior years could reduce the supply of timber needed by industry. Governments
have not usually controlled harvesting in areas outside existing industrial
forest tenures through an AAC. Forest managers must ensure that limits are set
on salvage logging to protect forest ecosystems.
Legislation also provides incentives to forest
companies who engage in salvage logging. Forest companies have to pay a royalty
to the government for the timber they cut, so called 'stumpage fees'. Under
Alberta legislation, (Forests Act -- Timber Management Regulation -Sec. 78)
timber companies pay at a rate of 25% of normal dues or reduced stumpage fees
for salvage logging at Minister's direction where harvesting is exceptionally
expensive, except as otherwise specified in a Forest Management Agreement. Under
N.W.T. law (Forest Management Act -- Regulations - Schedule B -Part 2 - Fuelwood
and Fence Posts), there is a reduction in the order of 50% for using dead
timber.
Harvesting beyond the AAC could affect the
long-term sustainability of the harvest at planned levels. Adjustments of the
AAC in future years to compensate for salvage harvesting in prior years could
reduce the supply of timber needed by industry; governments have not usually
controlled harvesting in areas outside existing industrial forest tenures
through an AAC. Forest managers must ensure that limits are set on salvage
logging to protect forest ecosystems.
Finally, since salvage logging can be seen as
the most lucrative form of timber harvesting (lower fees, no public input and
exemption from existing legislation), such practices encourage arson as a means
of accessing timber that would not otherwise be accessible.
Since logging is seen as 'big business', one
would naturally assume that large forest companies and the government are
turning a good profit from the sale of cut trees. This is not necessarily so.
The annual report of the White House Council of Economic Advisors in the U.S.
show that the Forest Service spent $234 million more than it collected in timber
receipts in 1995. "Generally, the Forest Service subsidized timber
extraction from public lands by collecting less timber sales revenue than it
spends on timber program costs," the report says. According to the U.S.
Government Accounting Office (GOA) the timber sale program lost nearly $1
billion from 1992 - 1994. A Canadian group called Environment Probe has done
several cost analyses relating to large scale timber production. During the
debate over logging in the Carmanah valley in British Columbia, Environment
Probe's figures showed that the timber company would have received higher return
on their investment by simply putting their money in a savings account.
Another argument concerning higher rates of
logging is that it creates Canadian jobs. There is certainly no denying this,
but the issue is not so 'clear cut', either. Under B.C. legislation, the
requirements of local mills must be considered before the logs can be considered
for export. However, there is a sub-sub-section that states that if the mills do
not require the lumber within two weeks of cutting, the lumber is considered
superfluous to the needs of the local mills and is available to be exported. The
cold reality is that the best lumber in the whole Keewatin region of southern
British Columbia is sent to Chilcotin for dry sort, and then shipped whole log
to Japan. Japanese factory ships process the lumber as the ships make their way
across the ocean. Much of the best lumber milled in Canada is not used in
Canada, either, but shipped to the U.S. Under the terms of the Canada-U.S. Trade
Agreement, even if Canada were to decide that levels of logging need to be
curtailed to preserve environmental conditions, we cannot diminish the flow of
wood and wood pulp to the U.S..
After the trees have been cut, the land must be
made green again. Even here our logic fails us. Roughly thirty years ago a man
by the name of George Marek came to Canada from Czechoslovakia and began work
for the Ontario Ministry of Natural Resources as a forester. Even then he spoke
of using smaller cuts, and having proper seedlings with well-developed root
systems for replanting. He became so outspoken against the Ministry's forestry
practices that the Minister sent him a letter essentially telling him to keep
quiet. Instead of bowing to the Minister's request, George sent the letter to a
local newspaper and quit the Ministry.
First of all, we must realize that we cannot
replant forests. We can replant trees, but there must be a recognition that a
tree farm is not a forest. Forests are wonderfully diverse, complex ecosystems.
After logging, sometimes the ground is prepared for seedlings by either burning
slash or crushing the remaining branches, stumps and other litter with heavy
machinery (scarification). Often, no soil preparation is done. Some replantings
use seedlings grown in nurseries from the 'best' genetic stock. Even in these
cases, one must realize that by cloning seedlings the natural genetic diversity
and resistance to disease and insect infestation is lost. Sometimes areas are
'replanted' by aerial seeding, and often the land is left to reseed itself as
best it can. So, the earth attempts to make the ground green again. Plants shoot
up, such as aspen, raspberries, blueberries or buffaloberries. However,
foresters do not want aspen or raspberries or other plants competing with the
pure stands of spruce or pine that they have planted, so they spray the areas
with large amounts of herbicide to 'discourage' this growth. In plantations,
they plant trees in neat rows, roughly 2 metres apart. An even age stand grows
out of this, but beneath the plantation of trees is a biological desert. In some
countries in Europe, forest biologists have begun the task of trying to help
forests create themselves again by using companion plantings of shrubs and other
plants in addition to the trees.
There are many other issues surrounding
large-scale industrial logging. To name a few:
· In
northern Alberta, a Japanese forest company (Daishowa) is cutting millions of
hectares of aspen, turning them into pulp using environmental practices that
would be illegal in Japan.
· In
some European countries, before anyone can cut a single tree, the person
responsible must obtain a permit for each tree. Before they will issue
a permit, the authorities want to know what the person will cut the tree into,
and for what the wood will be used.
· Logging
of remote areas requires roads to move the heavy machinery in and the logs
out. In the U.S., the length of logging roads in the U.S. National Forests is
roughly 8 times the length of their national highway system.
Is there a better way? Certainly. There are
many small scale woodlot operators who are working with the forests to remove
timber while maintaining the strength and the diversity of the forest. Such
eco-forestry requires first an admission of our limited knowledge of forest
ecosystems and the complex interrelationships of their inhabitants. Eco-forestry
proponents base a program of harvesting logs solely on working with Nature to
decide not only what trees can be removed, but when. No tree can be cut down
before it has past its prime and been naturally selected for removal.
So, how does logging imitate fire? Quite
simply, it does not. Forest fires follow an age-old pattern of rejuvenation,
recycling, and renewal. Nutrients and minerals locked up in dead trees and leaf
litter are taken and returned in a process that fertilizes the earth and
prepares the soil for new growth. With logging, there are none of these
benefits. First, there is a net nutrient loss as the biomass, the 'life' of the
forest is removed, carted away. Removal of all the trees in an area loosens the
hold on the soil, allowing it to wash away. Heavy machinery damages the soil
crust and compresses the soil, leaving a cold bed for seedlings to sprout.
Foresters liberally apply powerful poisons, insecticides and herbicides to keep
out 'undesirable' plants and animals. Logging patterns do not leave a forest
mosaic as is left by fire, but rather leave forest fragmentation and loss.
We stand today faced with an important choice.
We can continue to squander our heritage at an alarming and unprecedented rate,
or we can begin the process of recognizing our place on this planet and working
with the natural forces to obtain our needs at a price that will not bankrupt
the earth. This planet may be 25,000 miles in diameter, but everything we have
comes from this earth; if we screw this up, we have nowhere else to go.
I have used information from several references
for this report. While they are not all listed, the research and information
provided has been invaluable to me and is greatly appreciated.
(Mike has three diplomas from Sir Sandford
Fleming College in Lindsay, Ontario, two in Fish and Wildlife Technology. Over
the last twenty years he has worked on environmental assessment and related work
in five Canadian provinces, and is an outspoken advocate of environmental
stewardship).
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