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Lesson 1 – Regeneration Methods

Explore the advantages and disadvantages of natural and artificial forest regeneration methods, including seed tree and shelterwood techniques. Learn about the benefits and drawbacks of artificial reforestation, such as control of spacing and genetic improvement. Understand how to choose the right regeneration method based on landowner objectives.

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Lesson 1 – Regeneration Methods

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  1. Lesson 1 – Regeneration Methods Forest Science I Unit 6 – Reforestation Original by Jonathan H. Stribling December 3, 2001 Modified by Georgia Agriculture Education Curriculum Office July 2004 And CTAE Resource Network, 2010

  2. Two Basic Types of Regeneration • Natural • Artificial

  3. Natural Regeneration Advantages: • Low cost • Less labor and equipment required • Good early root development • Minimal visual impact • Less Soil erosion

  4. Natural Regeneration Disadvantages • Less Control of Spacing and Stocking • Generally lower yield • No genetic improvement • No increased disease resistance • Possible Pre-commercial thinning required

  5. Methods of Natural Regeneration • Seedtree • Shelterwood

  6. Seed Tree • Most popular natural regeneration method • Leave 6-8 (10) trees per acre to reseed • Trees left need to be evenly distributed over area to be regenerated • Disadvantage -- Often cannot get a logger to come back for such a light volume of wood

  7. Shelter Wood • Leaves more trees than seed tree (25-60) • Must plan ahead • Must control pioneer species in all regeneration methods (start 5 yrs or so before shelter wood cut. • Careful selection in deciding which trees to leave

  8. Artificial Reforestation • Clearcut followed by either planting seedlings or direct seeding.

  9. Artificial Reforestation Advantages • Control of Spacing and Stocking • Use of Genetically Improved Seedlings • Disease Resistant Seedlings • Allows for Change in Species

  10. Artificial Reforestation Disadvantages • Homogenous Stand – More Susceptible • Visually Displeasing to Some People Some political action groups rally against artificial methods of reforestation.

  11. Clear Cutting • Precedes planting seedlings or direct seeding • Cuts basically all timber off property

  12. Artificial Regeneration • Planting Seedlings Hoedad Dibble Machine An experienced planter may plant 1000 seedlings per day manually!!!!!

  13. Reforestation • Method Chosen will primarily depend on landowner objectives!!

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