Practical Forestry in the Pacific Northwest Part 3

The primary and all-important moral which all this points out to the lumberman is that his position under coming conditions will be largely what he makes it by his own att.i.tude. With the rapidity with which he gets into a position where his voice is listened to as unselfish and authoritative on the conservation subject, will his influence on the new conditions be measured. Therefore, he must study the subject. He must be able to support good laws and oppose bad laws with facts and arguments which will stand scrutiny.

Above all, he must show faith by practicing what he preaches so far as he is able. He must show conclusively the injustice of the public suspicion from which he suffers.

Conservative forest management has three essentials: Protection, utilization and reproduction. The last particularly depends on the first. The timber owner cannot protect adequately alone. Before he can expect much public help, however, he must show his willingness to do his share, for the state will not a.s.sume the whole burden.

The progressive members of the industry have shown it already, and the result is evident in the commencement of the states to help.

Their help will increase in the proportion that private effort spreads.

Presumably it will be the same with reforestation. With the fire hazard lessened there will remain the obstacle of overtaxation on property returning no income with which to meet it. The public will doubtless soon see that this is bad for the community, but will hesitate to forego present revenue in order to reap greater future revenue until convinced that the owner will actually reforest if given the chance. Even if no actual desire to take advantage is ascribed, there may be fear that he will make no active effort to start and protect the second crop, but will merely continue the course of least expense in the hope that a new forest will establish itself, with little to lose if it fails. Before he will receive the encouragement he deserves, he must prove his good faith.

The surest way to do this is to begin actual work now, where he can without certainty of failure. Unfortunately, this is often impossible, but he can at least study and experiment so he can argue convincingly that mutual success will follow reasonable encouragement.

CIRc.u.mSTANCES DETERMINE PROFIT

Let us a.s.sume, then, that it is best for the lumberman to start the practice of forestry for the purpose of strengthening his position and getting the most favorable conditions possible for its general adoption and continuance. How much does he depend upon success in this? Obviously, early public favor will hasten and add to the security of forest growing as a business, but is it absolutely essential? Do existing conditions and inevitable future conditions, regardless of public intelligence, furnish premises upon which we can calculate certain profit in some degree?

This depends upon the circ.u.mstances of the individual investor.

Without an expectation of more favorable fire and tax influences, reforestation cannot be universally recommended as a business proposition. Many timber owners are not warranted in undertaking it. Not enough are warranted in doing so to insure the future timber supply upon which public welfare depends. Nevertheless, there are conditions under which it is a good investment. It is even probable that for those who are well situated, the very obstacles which deter others will be advantageous through reducing compet.i.tion. _This fact is of peculiar significance to the public, for if the latter fails to stimulate reforestation generally it will play directly into the hands of the few who are independent of encouragement_.

It is customary, in speculating upon the profits of a second timber crop, to attempt to reduce it to a financial calculation based upon estimated yield, estimated future values and estimated carrying charges. These considerations are important, but their importance is largely in proportion to the financial weakness of the prospective timber grower. We revert again to the practical certainty that unless reforestation is general, the exhaustion of virgin timber will be followed by a shortage, and that the man who has a second crop at that time can obtain a price which will reimburse his carrying charges be they high or low. The cost of overcoming present obstacles will be shifted to the consumer. The possibility of such an investment is determined largely by ability to maintain a protective system with economy and to bear the expense of this and of heavy taxation during the period of no return.

In short, the weakness of the ordinary financial calculation upon existing conditions is that it attempts to estimate future stumpage values without knowledge of the true factor which will determine them. This factor is not the probable rise of existing stumpage while it continues to exist, but is the extent of the new-grown supply which will follow it provided existing conditions remain unchanged. It is inconsistent to figure the cost upon almost prohibitive present conditions without also recognizing that such conditions, if continued, will completely change the influences which now determine the market.

WHO CAN AFFORD TO REFOREST NOW

On the other hand, timber owners have by no means equal opportunity to take advantage of this fact. The productive capacity of their land varies, their taxes vary, the extent and location of their holdings affects the expense of protection against fire, and they have not the same facilities for financing a long term investment.

It is the balance of these factors that determine their opportunity.

a.s.suming rate of timber growth to be equal, present fire and tax conditions cla.s.sify them in relative advantage about as follows:

1. Owners of large holdings of virgin timber who can meet carrying charges by occasional sales at a profit over their purchase price, but will not sell much more than is necessary because all they can afford to hold is advancing in value. Such owners have more or less land deforested by fire or their own milling operations, and will incline to sell only stumpage without land. This land is not easily realized upon at present, and for the speculative reason stated, they will continue in business long enough to grow a new crop on it. The larger their holdings, the greater the certainty of this and the cheaper, relatively, the cost of protection. Moreover, concerns dealing with large and long term investments can consider a lower interest rate.

2. Owners with less facility for making an actual profit through growing timber, but desiring to maintain a milling business. Even if the cost of growing approaches or equals the value of the crop, they will be able to count on continued manufacturing profit.

(Both of the above cla.s.ses face a possibility of so heavy a tax on their virgin timber in some instances that they will be obliged to cut it and go out of business. This is unlikely to occur generally, however, for tax reform is almost inevitable, and it would have a compensatory effect of enhancing the value of the second crop.)

3. Owners whose holdings are not large enough to keep them in business until a second crop matures but are advantageously located. Second growth need not be mature to have a value. As the present supply diminishes, available coming supply will gain a high expectation value which can be realized upon. The profit it offers will be largely determined by its proximity to market and especially by its proximity to established mills which see their own supply running short and have failed, through inability or lack of foresight, to engage in reforestation themselves. It will also be affected by tax and fire charges, and the latter, especially, will be largely a matter of location.

4. The owner with no peculiar advantages, who can only set the general certainty of a market for second growth against his ability to carry a costly and uncertain investment for an indeterminate time.

Of course a first consideration in most cases is the comparative profits of other possible investments or, in other words, the exact interest demanded as satisfactory. Individuals are in by no means the same position in this respect by either inclination, opportunity or talent. Where one might be safer with his money in timber, another could make more by manufacturing. Generally speaking, however, conservative judgment leads to the conclusion that the present att.i.tude of the public warrants the first of the above four cla.s.ses of owners in undertaking inexpensive reforestation where the land has little sale value for other purposes and where the growth and fire factors are reasonably favorable. The second cla.s.s can also undertake it to advantage on much the same basis, but having less capacity for meeting the carrying charge, requires still more favorable conditions. The third cla.s.s must have the maximum advantage of every kind. It must calculate closely on the factors of cost and profit indicated by present conditions. In most cases the risk will be too great for prudence, and in nearly all financial ability will be lacking. The fourth cla.s.s cannot even consider it until the public's att.i.tude changes.

BETTER DAY FOR ALL IS NEAR

On the other hand, it is reasonable to suppose that publicly-imposed obstacles will decrease. It will become apparent that their persistence is bad economy. Fires will grow fewer and the state will aid in patrol. Reforestation in itself is a method of fire prevention when it places a green young growth on a fire-inviting tract of sun-dried litter and weeds. Taxation will be deferred. As the country develops interest rates will fall; making it easier to carry forest investments and harder to gain more through other investments. The state itself will engage more and more in forestry, with the result of making its principles understood and endorsed. Stumpage values will increase. Immature timber will have a sale value, lessening the term of investment. Gradually the business will get on a sound production basis, better for the consumer, better for the state supported by a forest income, and more profitable for the grower. Instead of capitalizing bad management and the sacrifice of the consumer, which in effect it does now by forcing the prospective grower to calculate on covering unnecessary cost in the price received, it will capitalize the earning power of forest land.

While final adjustment on this basis is still in the future, it is by no means entirely dependent upon popular foresight. The process is going on constantly, whether we know it or not. The sun is still behind the horizon, but the day is sure. Many Western timber owners are still in too dim a light to make their footsteps certain; others have a high vantage ground where dawn already lights the path.

CHAPTER III

FORESTRY AND THE FOREST

ELEMENTARY PRINCIPLES OF FOREST GROWTH

Whether the lumberman's judgment of economic influences leads him to be optimistic or otherwise as to the profit of forestry in general, he is most interested in the particular forest with which he has to deal. He can neither accept nor dismiss the proposition intelligently, much less put his ideas into actual practice, without knowing something of the capability of his land to respond to his effort. "What methods are best, what will they cost, and what will be the result?" are questions which arise at the very outset. They lead at once into the domain of technical forestry.

With us forestry has not been practiced long enough to furnish demonstrated examples with which to answer such questions. We can, however, profit by experience gained elsewhere, for the laws which govern tree life are as universal as those which govern the life of men and animals. In dealing with new species and new environments we have no great difficulty in judging their future from their past, which lies written plainly for those who care to study it.

While to some extent trees require elements obtainable only from the soil, they are more independent in this respect than most other forms of vegetation. Soil influences forest trees mainly by its physical character, especially as this determines the moisture contents. Very little nourishment is actually taken out of the soil for, as someone has said, wood is nothing but air solidified by sunshine. A tree's immense and complicated foliage system is the laboratory with which it effects this transformation.

Since air exists everywhere and the chemical quality of the soil is comparatively unimportant, the requirements of different species for light, heat and moisture are what mainly determine their distribution and habits of growth. And since heat and moisture are largely climatic factors and fairly uniform in given localities, it follows that the demand of a species upon light may practically fix its habits and possibilities in those localities. The very great variance of species in light requirement accounts to a large extent for the composition of most primeval forests. It is of peculiar importance in the management of forests by man because he cannot control it as he may be able to control some of the other agencies which affected the primeval forest, such as fire or seed supply.

SELECTION FORESTS

It would be unprofitable to discuss here all the many methods of forest management which have proved to be best, technically, for given species and combinations of species. Where market and transportation facilities are highly favorable, as in Europe, the timber owner can adopt the method which will bring the best results, but here he has no such choice. He can but bear in mind certain fundamental principles, uniformly applicable to large areas for considerable periods of time. Roughly, however, our Western forests can be cla.s.sified by their adaptability to the two directly opposite systems, known as clean cutting and selection cutting, of which almost all methods are modifications.

A selection forest is one in which all ages of trees exist, from seedling to maturity. It is the natural growth of species which are tolerant of shade. In a natural state, undisturbed by cutting, it maintains much the same aspect continuously, for as the oldest trees die, their place is taken by younger ones. Obviously such a forest must be composed of species, whether one or several, which can grow beneath its own shade. The understories of varying ages are as dense as their light requirements and the density of the overwood permit.

The common hardwood forests of the East ill.u.s.trate one type of the natural selection forest. On the Pacific slope an example is afforded by hemlock, either practically pure or mixed with white fir, but probably the most typical is the ordinary Western yellow pine under certain conditions. At its best this tree composes a forest so dense that all young growth is shaded out, but everyone is familiar with the frequent opener stand containing all ages.

The younger trees are often called blackjack.

EVEN-AGED FORESTS

On the other hand, trees extremely intolerant of shade occur only in what the forester calls even-aged forests. Being unable to start in the darkness of an existing stand of any considerable density, they must seize opportunities to recover openings. The Douglas fir of the Northwest, more commonly called red or yellow fir, is an excellent ill.u.s.tration. In the interior states this species reproduces under cover to some extent, because there is a stronger light average throughout the year and because the stand is not so dense. In the typical Douglas fir forests of Oregon and Washington, discussed in this booklet, it never does so. While hemlock, cedar and white fir undergrowth may be abundant, Douglas fir seedlings are seldom seen except in burns, slashings, roads, or open spots in the woods. And the fir trees composing the dominant stand are of nearly the same age.

How, then, did this even-aged fir forest begin? Close scrutiny will practically always find the answer in fragments of charred wood. Long ago another similar forest occupied the ground until lightning or an Indian's fire started a new cycle. Possibly recurring burns swept the area many times before wind-blown seeds began to start advance groups of fir, which, when fifteen or twenty years old, themselves fruited and filled the blanks between them. Perhaps destruction was not so complete and surviving trees made the process a swifter one. Except in the very oldest forests, where remains of the original stand have entirely rotted away, the history in either case may be read in ancient snags and fallen logs.

Suppose, however, that fire had not come to aid the fir in perpetuating itself? This, too, we can answer from the signs today. Every Northwestern woodsman knows tracts of varying size (usually small because fire has been almost universal) covered with big old hemlock, white fir and cedar, with here and there a dying giant fir, perhaps, but mainly showing fir occupancy only by rotting stumps and logs. No sign of fire is seen. When this fir forest was approaching middle age, the shade bearing species began to appear beneath it. As the firs began to crowd themselves out, the later comers shot up with the increased light and filled the open places. At last the even-aged fir forest was completely transformed into a selection forest of other trees, which will remain until some accident again gives fir a chance if any survives near enough to reach the spot with seed.

Douglas fir is not the only Western tree which usually grows in even-aged stands. Lodgepole pine has the same habit, often supplanting yellow pine after fire or logging. Western white pine is perhaps more tolerant than Douglas fir, hence more likely to hold its own without artificial aid, but is also more certain to compete successfully if it has such aid. The same is true of tamarack.

NATURE AS A MODEL

We thus see that if economic reasons suggest it, we may use the selection system as a basis for artificially managing the shade bearing species such as hemlock, white fir, cedar, spruce, and even Western yellow pine. We may cut the largest and oldest trees and still have a well started second crop. If there is not much young growth to leave, even a little is valuable. It may be decidedly best to leave medium sized trees, which otherwise we would cut, because they are still growing rapidly.

On the other hand, we see that this method would not be of any advantage at all in insuring a second crop of Douglas fir, for there is no young growth of this species to protect. The small and medium sized trees, instead of being immature, are merely stunted specimens of the same age as their larger brothers and unlikely to gain in size if left. Selection cutting here would save for future use only such understory of shade-bearing species as may exist. Unless this is an object, the best plan is to cut clean and get all we can. If we leave any fir at all it is for the purpose of reseeding, not to secure better utilization of the trees themselves, and whether we do so depends, theoretically at least, upon whether it is better than artificial seeding or planting. In short, selection cutting harvests the ripest trees of a perpetual forest, while clean cutting destroys the forest in order to start an entirely new and more rapid growing one.

Clean cutting is therefore necessary as well as natural in dealing with intolerant trees. But it does not follow that the selection system, although natural to tolerant species, is the only one adaptable to them. While the one cla.s.s demands light, the other does not demand shade. It is merely capable of enduring it. Indeed, except for the greater susceptibility of some species to extreme heat and dryness when very young, as a rule shade bearing trees grow much better if they do have ample light supply. Consequently clean cutting may be the best system for these also under certain economic conditions.

Besides its influence upon the occurrence of species in the forest, light practically governs the physical form of the individual tree.

If grown in an opening and not artificially pruned, a tree will have a conical trunk and living branches almost down to the ground. The denser and consequently darker the forest, the more cylindrical the trunk, the smaller the crown of branches and the greater the clear length. The individual tree has no object in a.s.suming a desirable commercial form and does so only when deprived of side light by numerous neighbors. Then it sacrifices diameter growth to height growth in reaching for the top light necessary for its life. At the same time the lower branches are killed by shade and drop off, the scars being healed and eventually buried. The pin knots near the center of a big clear log are the remains of branches which when living were at the top of the young tree.

This is why, if it is to produce good timber, any forest must be dense enough to cover the ground throughout the early part of its life at least. When we see an excellent clear stand of mature Douglas fir, for example, we may know that it consists of the comparatively few survivors of a close sapling growth in which the weak were gradually killed out after serving their office of pruning and forcing the vigorous. Had only the trees we now see been on the ground they would be worthless except for firewood. For the same reason artificial forest planting must be thick, although the fillers or nurse trees may be of inferior species if not of so rapid growth as to gain the mastery.

Nature teaches many lessons which we must recognize in artificial management or fail, but she is no more the best grower of forest crops than she is of agricultural crops. We have to study natural methods of forest perpetuation to see how they may be improved upon as much as to adopt them as models. As a rule the virgin forest is exceedingly wasteful of ground. The possibilities under intelligent care are not indicated by nature's average, but by her accidental best, and usually they far exceed even this. A fair comparison is that of scientific farming with unsystematic gleaning from wild and untended fields. The foregoing general principles of forest growth have been purposely outlined very briefly so as to serve as a mere introduction to their application or modification in concrete cases.

MANAGEMENT OF SPECIFIC TYPES

DOUGLAS FIR (_Pseudotsuga taxifolia_)