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Titolo:
Estimating forest crown area removed by selection cutting: a linked regression-GIS approach based on stump diameters
Autore:
Anderson, SC; Kupfer, JA; Wilson, RR; Cooper, RJ;
Indirizzi:
Univ Memphis, Dept Geog & Planning, Memphis, TN 38152 USA Univ Memphis Memphis TN USA 38152 Geog & Planning, Memphis, TN 38152 USA USGS Patuxent Wildlife Res Ctr, Vicksburg, MS 39180 USA USGS Patuxent Wildlife Res Ctr Vicksburg MS USA 39180 sburg, MS 39180 USA Univ Georgia, Daniel B Warnell Sch Forest Resources, Athens, GA 30602 USA Univ Georgia Athens GA USA 30602 h Forest Resources, Athens, GA 30602 USA
Titolo Testata:
FOREST ECOLOGY AND MANAGEMENT
fascicolo: 1-3, volume: 137, anno: 2000,
pagine: 171 - 177
SICI:
0378-1127(20001015)137:1-3<171:EFCARB>2.0.ZU;2-B
Fonte:
ISI
Lingua:
ENG
Soggetto:
CANOPY COVER; BASAL AREA; EDGE;
Keywords:
bottomland hardwood forest; crown area; GIS regression model; silvicultural treatments; stump diameters;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
24
Recensione:
Indirizzi per estratti:
Indirizzo: Anderson, SC Ctr Res Dev & Engn, CEERC, ER, W, 3909 Halls Ferry Rd, Vicksburg, MS 39180USA Ctr Res Dev & Engn 3909 Halls Ferry Rd Vicksburg MS USA 39180
Citazione:
S.C. Anderson et al., "Estimating forest crown area removed by selection cutting: a linked regression-GIS approach based on stump diameters", FOREST ECOL, 137(1-3), 2000, pp. 171-177

Abstract

The purpose of this research was to develop a model that could be used to provide a spatial representation of uneven-aged silvicultural treatments onforest crown area. We began by developing species-specific linear regression equations relating tree DBH to crown area for eight bottomland tree species at White River National Wildlife Refuge, Arkansas, USA. The relationships were highly significant for all species, with coefficients of determination (r(2)) ranging from 0.37 for Ulmus crassifolia to nearly 0.80 for Quercus nuttalliii and Taxodium distichum. We next located and measured the diameters of more than 4000 stumps from a single tree-group selection timber harvest. Stump locations were recorded with respect to an established gl id point system and entered into a Geographic Information System (ARC/INFO). The area occupied by the crown of each logged individual was then estimated by using the stump dimensions (adjusted to DBHs) and the regression equations relating tree DBH to crown area. Our model projected that the selection cuts removed roughly 300 m(2) of basal area from the logged sites resulting in the loss of approximate to 55 000 m(2) of crown area. The model developed in this research represents a tool that can be used in conjunction with remote sensing applications to assist in forest inventory and management, aswell as to estimate the impacts of selective timber harvest on wildlife. (C) 2000 Elsevier Science B.V. All rights reserved.

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Documento generato il 21/09/20 alle ore 12:20:33