THINNING IMPACTS ON TREE GROWTH

thinning, forestry,, sustainable forest management, tỉa thưa lâm nghiệp, tài liệu tiếng anh. lâm nghiệp, management methods, sustainable, thinning methodology, thinning impacts. thinning effects, effectiveness of thinning, nutrients light, competition in forest, stress of forest, management in forestry

THINNING IMPACTS ON FOREST GROWTH LECTURER: Dr Pham Minh Toai STUDENT: Nguyen Huu Dung ID: 1353091031 MAIN CONTENTS • • • THINNING DEFINITION KEY FACTORS TO ESTABLISH THINNING PLANS POSITIVE AND NEGATIVE IMPACTS OF THINNING ON FOREST GROWTH • CONCLUSION THINNING DEFINITION In forestry, thinning is the selectve removal of trees, primarily undertaken to improve the growth rate or health of the remaining trees Overcrowded trees are under compettve stress from their neighbors Thinning may be done to increase the resistance of the stand to environmental stress such as drought, insect infestaton, extreme temperature, or wildfre,etc (Russell T Graham et al 1999) KEY FACTORS TO ESTABLISH THINNING PLANS MANAGER DECISIONS FOREST TYPES AND FOREST GROWTH RATE AGE OF FOREST Sources: Garry Kerr et al 2011., thinning pratice- a silvicultural guide POSITIVE IMPACTS OF THINNING ON FOREST GROWTH POSITIVE IMPACTS OF THINNING ON FOREST GROWTH D: dominant I: intermediate C: co-dominant S: suppressed Sources: CLE ELUM, Washington news http://oregonforests.org POSITIVE IMPACTS OF THINNING ON FOREST GROWTH Sources: David J Suggett et al., 2013 NEGATIVE IMPACTS OF THINNING ON FOREST GROWTH NEGATIVE IMPACTS OF THINNING ON FOREST GROWTH Sources: JOSEF HAKL et al 2007., The Effect of the Soil Compacton […] on root biomass NEGATIVE IMPACTS OF THINNING ON FOREST GROWTH NEGATIVE IMPACTS OF THINNING ON FOREST GROWTH (*) marginal thinning intensity Sources: Ygui Zheng et al 2005 CONCLUSION THINNING IS PROFITABLE REDUCING WILDFIRE RISK THINNING AND FOREST GROWTH RATE HAS THINNING REDUCE STRESS FOR FOREST HEALTH THINNING INCREASE EROSION RATE AND SOIL COMPACTION INTER-RELATIONSHIP REFERENCES • • • • https://www.forestry.gov.uk/ https://www.ncforestry.org http://www.oregonforests.org https://www.researchgate.net Gary Kurr et al 2011., Thinning Practce A Silvicultural Guide https ://www.forestry.gov.uk/ ...MAIN CONTENTS • • • THINNING DEFINITION KEY FACTORS TO ESTABLISH THINNING PLANS POSITIVE AND NEGATIVE IMPACTS OF THINNING ON FOREST GROWTH • CONCLUSION THINNING DEFINITION In forestry, thinning. .. Washington news http://oregonforests.org POSITIVE IMPACTS OF THINNING ON FOREST GROWTH Sources: David J Suggett et al., 2013 NEGATIVE IMPACTS OF THINNING ON FOREST GROWTH NEGATIVE IMPACTS OF THINNING. .. THINNING ON FOREST GROWTH Sources: JOSEF HAKL et al 2007., The Effect of the Soil Compacton […] on root biomass NEGATIVE IMPACTS OF THINNING ON FOREST GROWTH NEGATIVE IMPACTS OF THINNING ON FOREST GROWTH