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The effects of highgrading on forest...

Finkral, Alex J.

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The effects of highgrading on forest stands of southern New England.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	The effects of highgrading on forest stands of southern New England./
作者:	Finkral, Alex J.
面頁冊數:	85 p.
附註:	Source: Dissertation Abstracts International, Volume: 66-03, Section: B, page: 1236.
Contained By:	Dissertation Abstracts International66-03B.
標題:	Agriculture, Forestry and Wildlife. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3168889
ISBN:	9780542048463

The effects of highgrading on forest stands of southern New England.
Finkral, Alex J.

The effects of highgrading on forest stands of southern New England. - 85 p.

Source: Dissertation Abstracts International, Volume: 66-03, Section: B, page: 1236.

Thesis (Ph.D.)--Yale University, 2005.

Highgrading is the practice of harvesting the most economically valuable timber in a forest stand while leaving the less valuable, unmerchantable, or poorly formed individuals. Stem analysis was used to reconstruct residual stands of mixed hardwood species in southern New England to determine growth responses to two partial harvesting practices: highgrading and crown thinning. Stem volume growth, value growth, and species compositions between highgraded and thinned plots were compared six to twenty years after a harvest. Post-harvest stemwood volume growth was higher in thinned plots as a function of higher initial post-harvest volume. There was no significant difference in species diversity between the two treatments during the period following harvest although dominance of shade tolerant species increased in highgraded plots. The cash value of the harvested trees was compounded at different interest rates over different treatment periods and combined with value growth of the residual timber to produce a composite future value. Results showed that highgraded plots had a total percent return higher than thinned plots at interest rates greater than 6.7% when using median stumpage prices as the value of the timber. Using a range of stumpage prices caused the threshold at which the percent return of highgraded plots exceeded that of thinned plots to move to 6.5%. Further, using median stumpage prices and a stumpage price range in separate analyses, a simulated commercial clearcut treatment---the liquidation of all merchantable volume at the time of treatment---produced the highest returns at interest rates above 7.2% for both treatments. Highgrading provides a financially lucrative option for partial cutting in mixed hardwood stands in southern New England at higher interest rates. Highgrading maximizes investment potential under very few circumstances when both thinning and commercial clearcutting are possible options.

ISBN: 9780542048463Subjects--Topical Terms:

783690
Agriculture, Forestry and Wildlife.

The effects of highgrading on forest stands of southern New England.
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