|
SUSTAINABLE FORESTRY: IT'S HERE ALREADY, YOU JUST HAVEN'T TRIED
IT
By Pete Klink, Consulting Forester, Coldwater, Michigan
Where do we begin when asked to write an article on sustainable
forestry in Michigan? Continental drift, inland oceans, and periods
of glaciation have all influenced our forests. About 13,000 years
ago, Michigan and points south to mid Illinois, Indiana and Ohio
were covered with glaciers thousands of feet thick. As the global
climate warmed (wonder who to blame for that) the glaciers receded
leaving the landmass of Michigan looking like a moonscape. The first
plants to establish themselves were algae, mosses and other simple
plants. Soils were formed and spruces, pines, and other conifers
were the first tree species to invade this state. Humans started to
explore this area as it became more hospitable. These first visitors
and their ancestors used fire extensively for a multitude of reasons
including but not limited to hunting, habitation, security, and
warfare. Burn permits were not required in those days and without a
local fire department, these fires and those started by mother
nature had consequences that have significantly influenced our
current forest composition. As our hemisphere continued to warm and
fires and windstorms went unchecked, hardwoods progressed northward.
At this time we should make a simple clarification: hardwoods
(angiosperms) are broad leaved deciduous trees and softwoods
(gymnosperms) are needle leaved evergreen trees. Yes some softwoods
are harder than some hardwoods and vice versa and your father taught
you that popple and cottonwood are softwoods, but if you want to be
politically correct, this clarification is the accepted scientific
classification. You may also want to know that not all hardwoods are
deciduous and not all conifers are ever- green. (TRIVIA: what
produces more heat: a pound of hickory or a pound of popple ((both
air dried))?).
Let's return to our major focus for this article: the forests of
Michigan. Only for the last couple of thousand years has Michigan's
forest composition been basically what it is today. For brevity,
this article is only going to address the 100+ woody trees, shrubs,
and vines that naturally occur in Michigan. By no means do we want
to understate the importance of other plants to our natural
heritage. Those stories would be best told by other more informed
individuals.
We all know about the heyday of logging in northern Michigan, but
do you know that southern Michigan was extensively covered by
hardwood forests? When the pilgrims first stepped onto Plymouth
Rock, it is said that a squirrel could travel west to the
Mississippi without touching the ground. In southern Michigan (let's
use Mt. Pleasant as the point of distinction), over 85% of the
landmass was forested prior to the arrival of our industrious
European ancestors. They left the prairies alone thinking that they
didn't have the capacity of growing traditional agricultural crops
and proceeded to clear the forests to grow their crops. Just think,
no chainsaws, bulldozers or dynamite. Talk about American
perseverance.... Our southern Michigan "settlement" took much more
effort than the logging of the north country. The trees were larger
and harder to cut, stumps had to be removed, rocks had to be picked.
If we may digress here a bit... Did you ever wonder how those stumps
were removed? Most of them were left to rot in place and were farmed
around until they could be popped out with little trouble. The
neatest explanation on how many of those stumps were removed was by
using a 30' long hickory pole chained horizontally to the stump and
having a team of horses walk around the stump and actually
unscrewing it. True or not, we don't know. We just use a backhoe,
works good on rocks too.
Well, we've come to another point for distinction. Do we talk
about forestry in all of Michigan or not? Michigan has two distinct
forest classifications and if you ask any two college professors you
may qualify for 3 hours of credit before they give you a simple
answer. However, again using Mt. Pleasant as an arbitrary dividing
line, the forestlands to the north are considered as the Northern
Forest Group with both hardwoods and conifers, and forestlands south
of Mt. Pleasant would be in the Central Hardwood Forest Group. Each
of these classifications has several forest types within its
grouping. Yes, there are transitional exceptions, but that's what
makes Michigan interesting. So you can see that to do justice to all
of Michigan's forestlands it would take more than one article.
Much has been written about the northern forests of Michigan, so
we feel that at this time we would like to focus on the overlooked
forests of the lower 1/3 of Michigan where 80% of the population
lives. Remember that 85% of this area was forested prior to European
settlement. Forestland currently comprises only 12-15 % of southern
Michigan. Historically, most farms left a woodland somewhere on the
farm, usually to the rear of the property or on ground that was less
desirable to grow traditional agricultural crops. These woodlots
provided lumber, fuel, food, medicines, and numerous other
commodities that were necessary for everyday life in developing
America.
The forest is a community, not only of trees, but also the
associated soil, water, and wildlife components. Hardwood veneer and
lumber and other traditional products are still important yields of
these forests, but other values associated with today's society are
becoming as important, if not more so in many cases. These values
are as diverse as each individual. They may range from the general
aesthetics offered by forestlands to visual and sound barriers, soil
and water conservation, wildlife habitat, diverse recreational
opportunities and a multitude of other uses. The commodities
produced by our forestlands can no longer be measured in dollars
alone.
As the population continues to grow and the land resource remains
constant, the true value of forestlands becomes immeasurable and
this brings us back to our original intent for writing this article:
SUSTAINABLE FORESTRY. Many professional foresters feel that the
cliché of "Sustainable Forestry" is redundant. If practiced right,
forestry protects the integrity of the forest and assures its
succession. Good forest management improves the health and vigor of
the forest, provides diverse habitat for wildlife, and protects the
watershed. As foresters, we are responsible to the landowners and
their objectives, but we also address society's concerns by
informing the landowners of the best options for their
consideration. Professional foresters have the tools to manage
Michigan woodlots for multiple uses, however we work with private
landowners, and this brings us to the real dilemma. One of the
biggest problems foresters face is the constant change of landowners
for individual woodlands. Each new landowner, and even long-term
landowners, often change their objectives for their forestlands.
With the average crop rotation being 100 years, you can see that
man's short time of involvement is definitely an impediment to long
term management.
So to see where sustainable forestry is, we have to look at where
we have been. If one is to consider a forest as a place of woody
plants, then we are actually improving on the situation since the
turn of the century.. Many marginal farm fields have been left
fallow and have naturally returned to a forested state. Government
programs and private efforts have reforested significant acreage.
The residual forestlands have been producing twice as much wood
fiber as is being harvested. From a forester's perspective, this
natural conversion of old farm fields and reforestation efforts by
many landowners is very beneficial. However, those residual
forestlands growing an abundance of fiber are not necessarily
growing what the forest industry currently desires. In southern
Michigan, quality is the name of the game. All species have some
value if they are blemish and defect free. Historically, black
walnut, white oak, red oak, sugar maple, and cherry have been the
most valuable and desirable trees to harvest. Markets do exist for
other species and lower quality products, but the value of high
quality saw logs and veneer can be 10 times more than the value of
inferior trees and less desirable species. Landowners must know what
they have prior to determining what needs to be done. The forester
will provide various options and the short and long term
consequences of those options to the landowner. Timber production,
wildlife, water quality, recreation, aesthetics, and whatever other
goals the landowner has expressed an interest in will be optimized
with timely management. Whatever the landowner's objectives may be,
there are always trade-offs in forest management, we try to minimize
the detrimental ones and maximize the beneficial ones. All
landowners are ultimately responsible for their management
decisions.
Only 10% of forest landowners have followed some sort of
professional forest management recommendations. Only 1 % of our
forested acreage is considered as being managed with intense and
timely management activities. The main reasons for this minimal
effort are limited markets for low quality forest improvement
thinnings and inadequate time/finances for such activities by the
landowners. If a landowner is willing to invest even a moderate
level of time and money in his/her woodlands, significant
improvements will occur. In most cases, professional forest
management can double the growth rates and increase the value of the
residual forest. Significant improvements can be made for all
ownership objectives at the same time through a multiple use
management plan.
In southern Michigan there are minimal restrictions on what can
and can't be done on your property. Several states have enough
don'ts, can'ts, and other responsibilities associated with
landownership that it is starting to take the pride out of
ownership. For now we still have private property, but... Be
responsible and take a good look at your property and work with a
professional resource person prior to undertaking any serious
activities. It takes a hundred years for that tree to grow and
moments for it to go. There are many agencies and organizations that
can put you on the right track to responsible land ownership:
Michigan DNR, Soil and Water Conservation Districts, Michigan Forest
Association, MUCC, industry foresters, and private consulting
foresters. Private consultants represent landowners just as lawyers
represent clients.
So where does that leave us on the issue of sustainable forestry?
Only you, the landowner, can answer that. But then we have to
remember those glaciers, polarity reversal, and the story of the
dinosaur. So the bigger question may not be sustainable forestry,
but sustainable earth.
|