Logging A Roadside Stand


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Logging A Roadside Stand ·To Protect Scenic Values

Philip M. McDonald and Raymond V. Whiteley

ABSTRACT-A case study on the Challenge Experimental Forest, California, demonstrated that logging along road­ sides need not despoil roadside stands. Nearly every tree was "viewed" before marking. Because of the "special­ care" procedures followed, combined logging and slash-dis­ posal cost was about twice that of a single-tree selection cut.
A n increasingly outdoor-minded citizenry is becoming
highly intolerant of damage to aesthetic values. Its concern for environmental quality is being expressed by well planned, articul·ate pressure on nearly every level of public and corporate management. L'Ogging, whether on privately owned or public lands, is often bitterly attacked. Thus the forest manager faces what appears to be conflicting demands. On one hand, he must provide fores1t commodities and boost production to meet growing demands. On the other, he needs to provide the less tangible, yet equally essential benefits of scenic values, pleasing aesthetics and attractive forests.
Logging along roadsides is particularly vulnerable to criticism, but a case study on the Challenge Experimen­ tal Forest in north central California demonstrated that logg;ing along roadsides need not despoil roadside stands. Although we removed about a third of the merchantable stems, we believe few travelers would object to the appearance of the ·residual stand. Indeed, some might find views into the less dense forest more pleasing. Because exacting standards of felling, skidding and slash disposal were followed, the combined logging and slash disposal cost was about twice that of a single-tree selection cut-the most comparable of sever­ al cutting operatings on the forest. In our opinion the benefits were worth the cost.
Setting
The highway, which passes through the forest, winds
THE AUTHORS are research forester, Pac. SW Forest and Range Exp. Sta., U.S. Forest Serv., Berkeley, Calif., stationed at Redding, Calif.; and former forestry research technician, Pac. SW Forest and Range Exp. Sta., now with the Soper-Wheeler Co., Strawberry Valley, Calif.
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its way across more th.art 30 miles of timbered Iand. It is no freeway and should never be. It iis asphalt­ surfaced, 24 feet wide, has 10 percent maximum grades, and 150-foot minimum radius curves. Prudent speeds range from 20 °to 40 miles per hour. The highway climbs from an elevation of 2,300 feet near Challenge .to an elevation of over 5,500 feet. In so doing, it passes through at least seven major forest cover types. A .traveler can observe vegetation in a wide variety of species, life forms, sizes and age classes. Tree sizes range from stately pines exceeding 60 inches in diameter to delicate seedlings, a few inches high. Tree forms vary from tapering spires to stems gnarled and twisted by struggles for survival. Spatial arrangements of .trees are diverse and vary from dense, compact "walls" to isolated trees in large fields of brush. And throughout, the traveler is treated to an ever-changing view from vegetational close-ups to vistas of forest-clad ridgetops, miles away. That the area traversed by the highway is scenic is beyond doubt.
Thus we wanted the portion of highway passing through the Experimental Forest to remain scenic also. But what would people see as they drove through it? We estimated they could easily see about five acres of ground. The amount seen yaries tremendously, of course, with the location of the highway relative to topography ( ridgetops or valley), highway engineering (curves, cuts and fills), and vegetational characteristics (species, size and spatial arrangements). In this case the highway wound through forested terrain and was constantly changing in elevation. Thus the "near" view ranged from almost nil to more than 300 feet. Nil view portions (especially above road cuts) are not all nega­ tive, however; they are handy for debris disposal and temporary log storage.
The tallest vegetation here is mostly of coniferous species-portderosa pine, sugar pine, Douglas-fir, white fir and incense-cedar. Several hardwood species also are present, chiefly Pacific madrone, bigleaf maple, Califor­ nia black oak, tanoak and dogwood. Though generally an understory component, the hardwoods contribute an extra measure of variability, contrast and beauty to the stand.
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Fig. 1. The limby old incense cedar in the left foreground would be "the first to go" in conventional logging, but was left standing as a pleasing variation in species and life form.
Logging Practices
Before trees were marked for cutting, several key issues on the area in general and how much could be removed while keeping the stand aesthetically pleasing were decided: (1) The area was to remain in timber production; (2) only merchantable or income­ producing trees would be harvested in the first cut; ( 3) the stand already had the diversity of species and age classes necessary for pleasing variability to the traveler; ( 4) the present stand had too many trees and its productivity could be improved by cutting. Preliminary estimates indicated that about one-fourth of the mer­ chantable volume could be removed. Therefore, every 25 years, about 25 percent of the volume would be cut. Thus the largest trees would be about 175 years old.
Diseased, injured and dying trees were the first to be marked for cutting. From then on, each tree was marked for cutting or reserved, depending upon its individual impact on the "view" (Fig. 1). Here the
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trained forester had to modify his thinking from the traditional "even spacing about each tree" to include both even spacing and the deliberate leaving of clumps of trees, to achieve. variability in spatial arrangements.
Twenty-two percent of the merchantable volume and 32 percent of the merchantable stems were removed by logging. Cutting caused the proportion of pines in the stand to increase over that of the firs and incense-cedar. This was also true of merchantable volume.
Logging and slash dispos·al were practiced as an art-the art of minimizing damage to remaining trees and soil, and of eliminating evidence that slash had been disposed of. But the extra care that was taken incurred additional costs.
Each tree was felled where it would cause the least damage, by directing it into a narrow slot between other trees. Keeping trees off the highway was, of course, a must. Occasionally the rubb:!r-tired loader aided felling by pushing against trees leaning over the highway. No stumps higher than 8 inches were per­ mitted-to minimize their being seen. All logs were skidded by a rubber-tired tractor to minimize disturb­ ance to the ground and vegetation. Often, the operator carried the winch line to the log-thus avoiding damage to thickets by keeping the tractor out of them. When­ ever tops could be removed without damaging residual trees, they were left on the top-most log, skidded to the landing or log-loading site, and cut off there.
Landings were located out of sight. The three land­ ings in this operation were strategically sandwiched into small openings hidden from the highway. By its very nature, the near view area is often narrow. Locating landings large enough to store a few logs, and to accommodate some slash (tree tops), the loader and at least one logging truck, required careful planning.
After logging had been completed, all cull logs and remaining tops were skidded to the landings and bucked into short lengths. In this typically dense young­ growth stand, a few submerchantable trees were in­ evitably damaged; these trees also were cut, skidded to the landings, and ·added to the slash accumulation already there. Limbs and smaller slash were hand-piled in small openings hidden from the highway. All piles were carefully burned after heavy autumn rains. Each burning pile was visited on a fixed schedule, and most unburned material was hand fed into the fire. By this close control, more than 95 percent of the slash was eliminated, and no trees were singed.
Costs
Because of the "special-care" procedures used, the combined logging and slash cost of this cutting was about twice that of a single-tree selection cut--'the most comparable of several cutting operations on the forest Hand piling, burning and bunching with a bulldozer averaged nearly $75 per acre. After converting to a volume basis, the combined logging and slash disposal cost was about $30 per thousand board feet.
Because of the extra care and costs, roadside cuts are best included as integral parts of large timber sale areas which enable costs to be spread over large volumes or many acres. If the roads,ide zone is treated as an entity, the logging and slash disposal costs in this study are
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Fig. 2. Logging debris from this roadside cut was piled in openings hidden from the highway. A large, bumed slash pile lies out of sight behind the maple trees directly in front of the van.

indicative of costs for this type of treatment. Are they worth it?
We believe they 11re, for the traveler can pass by, appreciate the view, .and enjoy the natural-appearing stand (Fig. 2). If they look closely, foresters will see benefits, too. Most of ·the least healthy trees have been removed and some of the extra trees are gone (Fig. 3). Those remaining now have more space around them, and their growth rate should increase. The proportion of ponderosa and sugar pines in the stand has in­ creased. Thus the growth of the stand at least for the next 25 years will be concentrated on larger, taller stems .
Future Stand Development
But what will be the view of the future traveler? Although cutting opened the view, the stand is likely to close again because of large numbers of hardwoods, chiefly tanoak and ·Pacific madrone, in the understory. These small hardwoods, along with white fir, are shade­ tolerant and grow for years beneath the dominant conifers. A partial cutting creates ideal growing condi­ tions for them. Although not a "takeover" threat to the s·tand, hardwoods and young fir pose a threat to the future view. They possibly add another expense in the near future for understory thinning.
New regeneration probably will neither increase
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stand density nor threaten the view. Because the residu­

al trees are both numerous and of seed-bearing age, a

shower of seed from at least one tree species should

reach the ground almost every year. Few seedlings

should result, however. One reason is that below

ground, roots from established trees will soon occupy

any space created by cutting. Above ground, branches

from existing trees will quickly expand into any new

openings. Thus the amount of light, moisture and

nutrients available to new seedlings will be minimal.

The species composition of the stand will graduaHy

change. Ponderosa pine will be unable to produce

seedlings and, in fact, is not regenerating now. Thus the

shade-enduring hardwoods, firs and incense-cedar will

gradually replace the pines. This is not necessarily an

undesirable process since the species other than pine

are aesthetically pleasing, and most of them should

enjoy a profitable young-growth timber market in the

future.

The age-dass distribution of the stand also will

change. The majority of larger trees in the stand are

now of one age. Continued cutting will lead to a stand

of many ages.

An inescapable conclusion from this study is that

careful logging can enhance both forestry and the

roadside view, thus providing both fores.t commodities

and amenities.

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Fig. 3. A, above, before logging, April 1968. The stand is dark and dense. 8, below, after logging, April 1969. Close examination will show that a number of trees were logged.

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Logging A Roadside Stand