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Forest Harvesting Methods. Clear Cutting This is the method most used ALL the trees in a certain area are cut down The stumps and underbrush that is left.

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Presentation on theme: "Forest Harvesting Methods. Clear Cutting This is the method most used ALL the trees in a certain area are cut down The stumps and underbrush that is left."— Presentation transcript:

1 Forest Harvesting Methods

2 Clear Cutting This is the method most used ALL the trees in a certain area are cut down The stumps and underbrush that is left behind is burned

3 Trees Most Often Clear Cut Pine Douglas fir

4 Advantages of Clear Cutting Cheap Efficient (easiest, fastest method)

5 Disadvantages of Clear Cutting Has to be replanted by hand (takes time and is expensive) If left unplanted, the soil will erode

6 Selective Cutting Also called “Highgrading” Small areas of big trees are cleared to leave space for smaller trees to grow

7 Trees Most Often Selectively Cut Cedar Hemlock

8 Advantage of Selective Cutting Smaller trees will have a chance to grow much larger

9 Disadvantages of Selective Cutting Takes a lot of time Other trees get in the way and make the job harder More expensive

10 Seed Tree Cutting Cutting down almost all the trees in an area, but leaving a few The few trees provide seeds to repopulate the area

11 Patch Logging Trees are cut down in a checkerboard pattern. The parts that are cut down are clear cut

12 Trees Most Often Patch Logged Douglas fir

13 Advantages of Patch Logging Because so many trees are left behind, the forest reseeds itself naturally It is cheaper than selective cutting

14 Disadvantages of Patch Logging New roads have to be built to get to each section of the “checkerboard” This is expensive and takes a lot of time After the logging is finished, the roads are no longer used, but they are cut right through the forest (ugly)

15 Shelterwood Cutting All the trees in a row are cut down All the other trees are left This is only used for trees that need shade to grow

16 Strip Logging A cutter uses a chainsaw to cut strips of trees in alternating rows Allows the cutter to choose to only cut the trees he wants, or to cut the whole strip The strips should be cut perpendicular to the wind to prevent erosion

17 Types of Trees Most Often Strip Logged Usually done in Boreal and Mixed Forests

18 Advantages of Strip Logging The forest naturally reseeds itself It is cheaper and easier than patch logging Not as many roads need to be built

19 Disadvantages of Strip Logging Really bad erosion can happen in the strips that are cut down


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