posted 12 years ago
Hey Drew,
I work as a consulting Forester for a living. I set up and administer private timber sales quite often. If you are still looking for advice I have a few questions for you.
You said your trees were large, can you be more specific? The commonly used measure is the trunk diameter 4.5 feet above ground level. This is an important measure since many trees over, say, 14" at this point are large enough for higher value markets like rail road ties and grade lumber.
Could you be more specific about some of your species? Any guesses as to the types of oaks you have? Red or White, or even species? Red oaks in your area will generally have dark bark that holds tight to the tree, their leaves also come to a point at the tip of each lobe. White oaks generally have lighter bark that will flake off in small pieces when you rub it with your hand. White oak leaves do not have points on the lobes. White oaks live much longer than Reds and can be 2-3 times more valuable (depending on size, species, and tree grade). I am guessing if you are in North Carolina that the "poplars" you have are Tulip Poplars "Liriodendron Tulipifera"? If that is the case disregard the earlier comment about poplars being short lived. Tulip poplars are not "true" "Populus" "Poplars", they are very long lived and highly sought after for timber.
Using a "selective" logger is the way to go, but I would give a few words of caution. Did you get any references? Could you check out some areas he has logged in the past? If your land is less than 20-30% slope his machine will do a great job getting around and minimizing damage. The term "selective" means different things to different people. If you have large (diameter/height) high value (depends on size, species, and tree grade) trees it could mean a "high grade" or "diameter limit" cut. This would essentially take out all the commercially valuable species in the woods. While this kind of harvest usually leaves many trees standing it guts the diversity and future value of the forest. The ideal way to harvest would be to take some of all the species in all the diameter classes out in a stand wide thinning. That would likely mean you take a few very large, more medium, and a lot of small trees out all at the same time. Specifics would depend on the diameter distribution of your property. Shawn's advice to remove about 30% (of both total number of stems and standing volume) is a good rule of thumb. The small tree (here I mean 10" diameter down to 1" diameter) removal would likely have to be done by you. The small tree thinning is often the hardest to explain. In trees there is a very loose relationship between diameter and age. In a thick stand many of the 3-10" diameter trees can be as old as the trees 2-3 times their size, they simply lost the race for the sun and got over topped. Just because they are small does not mean they will be able to respond to a thinning by growing larger. By removing some of these older/smaller trees you are allowing the more vigorous saplings to really take off, and that is where you want your growth to be concentrated.
By thinning this way you would open all layers of the canopy and make some significant canopy holes ( a single 20-30" diameter oak can have a canopy that covers 1/4 acre or more). This lets you have a mix of direct and diffuse light on the forest floor. It allows for the most diversity of regeneration. If you are wanting to add edibles I would suggest looking into your state nursery. You should be able to get many of the native fruit and nut trees as bare root seedlings for well under a dollar a piece. Post thinning would be an ideal time to plant as many species as you can get in the ground. If you want to continue to manage this tract it is important you don't cut to heavily right now, or it would simply take to long to recover.
Your idea to select a single root sprout is a great way to propagate most hardwoods. Oaks, Hickories, Tulip and true Poplars, will all stump sprout given enough sunlight, and they will grow quite quickly off the old tree roots. I usually suggest waiting 3 years post harvest. Then select the tallest or straightest sprout present to leave and cut all the rest (don't use herbicide). Thinning the sprouts speeds up growth and prevents you from having an abundance of multi-stemmed trees.
Hope this helps.
J