QUOTE(Michael J. @ Oct 23 2014, 10:58 PM)
lainux:
The whole idea of coppicing is to manage the supply of trees you are growing.
When coppicing is done, the trees that are cut-down will regenerate new shoots from the stump (note: only if the tree is one of those cut-and-come-again types). From the new shoots, you'd only choose 1 or 2 really strong shoots and let them grow. These new growths will also take about the approximate number of years to reach the desirable girths.
Eg. for teak, coppiced teak stumps will put out shoots quite quickly, and the selected shoot will take about 10 years to reach the desired harvesting girth (+/- 20cm).
But in the meantime, the extra "breathing" space created from coppicing allows the remaining tree stands to grow better, which improves the quality of those trees and their wood.
So let us use an example to illustrate this:
Let's say you plant 600 teak trees on 1 hectare of land. You know that it will take about 10 years for your trees to reach marketable sizes. But you also know that the more growing space each tree has, the better the quality of the wood. And the better the quality of wood, the higher the price you can command.
Thus, you decide to implement coppicing technique. What you'd do is allow the trees to grow to about 5-6 years age, and then for every 1 tree, you remove 1 neighbouring tree. Thus in effect, you have removed 300 trees from your original 600.
Now this does not mean those 300 trees removed are gone forever, no. They will put up new shoots soon, and by the time they are 4-5 years old, the older stands can now be harvested for sale.
Therefore, you've created a tree-harvesting cycle of 4-5 years through the use of coppicing technique.
As for the comparison between tree farming and fruit production... they are about the same in terms of work, really. It is just that the type of work will be different.
With fruit trees, your crop are the fruits, and you will need to protect your crop against pest, diseases etc. With timber plantations, your crop is the tree itself, and you will still need to protect them against pest, diseases etc. Sarawak used to have large tracks of acacia timber plantations, but now they are shuttering them down. Why? Because of fungal outbreak, wood boring beetles, lightning strikes (oh yes, lightning is a big problem in timber plantations), and of course theft. Theft is inevitable, especially if you have valuable timber species.
But to answer your question more directly, tree cropping requires less intensive attention compared to fruit cropping. However, by "less intensive attention", it does not mean checking the farm only once a month. It is more like having the luxury of checking the farm once every 3-4 days instead of every other day.
As for creating a forest-like environment... sure, that is a good idea. But do talk to some permaculturist about that. As far as I understand, permaculture focuses a lot about natural balance. And the permaculturist I know really put in a lot of work to achieve this balance, so it is not going to be a walk in the park, so the speak.
But yes, once the permacultured farm has reached its natural balance, there is a noticeable scarcity of disease outbreaks. Even when an outbreak does occur, the intensity is often very reduced compared to intensive farms.
Mixed trees do grow better, as long as they are compatible. Some trees are just bad idea to grow. For example silver oak is know to produce toxins that it injects into the soil through its roots, which are poisonous to seeds and seedlings of all other tree species, but has no effect against animals, humans or soil organisms. Trees like casurinas and certain pines also produce a similar toxin, but through its mutualistic mychorrhiza.
OK, now I really understand what coppicing is. So, it is kind of similar to thinning.