DOI: 10.1016/j.foreco.2013.03.041
Scopus记录号: 2-s2.0-84876785349
论文题名: Horizon visibility and accuracy of stocking determination on circular sample plots using automated remote measurement techniques
作者: Zasada M. ; Stereńczak K. ; Dudek W.M. ; Rybski A.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 302 起始页码: 171
结束页码: 177
语种: 英语
英文关键词: Forest inventory
; Relascope
; Terrestrial laser scanning
; Terrestrial photogrammetry
Scopus关键词: Forest inventory
; Quadratic mean diameter
; Relascope
; Spatial arrangements
; Stand characteristics
; Terrestrial laser scanning
; Terrestrial photogrammetries
; Tree identification
; Forestry
; Photogrammetry
; Steel beams and girders
; Surveying instruments
; Visibility
; accuracy assessment
; basal area
; diameter
; forest inventory
; laser method
; photogrammetry
; remote sensing
; stand structure
; visibility
; Beams
; Forestry
; Inventories
; Lasers
; Photogrammetry
; Scanning
; Surveying
英文摘要: When using such methods as terrestrial laser scanning (TLS), Bitterlich relascope and methods utilizing short-range terrestrial photogrammetry, one of the major factors influencing the accuracy of stand characteristics determination is the visibility of trees on a sample plot, which is often obscured by the shadow effect caused by trees located closer to the plot center. In the presented study the equation for assessing the visibility of the horizon in relationship to the sample plot radius and such characteristics of stands as stocking and quadratic mean diameter (QMD) was presented. The verification of the formulae using data from 30 sample plots with simple structure confirmed the practical applicability of the derived equation for the determination of horizon visibility on circular sample plots with radii above 15. m. It has also been verified, that spatial arrangement of tress influences the derived relationship in the investigated stands with simple structures. The relationship between the horizon visibility and the accuracy of stocking and basal area has also been examined. It was concluded, that this relationship is relatively weak and significant only for close distances to the plot center. At the same time, the percentage of the visible trees and basal area also depends on the distance from the plot center. It has been concluded, that for the analyzed plots the error of stocking determination does not exceed 5% for a plot radius up to 15. m. The accuracy of tree identification is also particularly influenced by other trees located close to the plot center, which cause relatively large, significant obstacles in horizon visibility. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66562
Appears in Collections: 影响、适应和脆弱性
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作者单位: Warsaw University of Life Science - SGGW, Faculty of Forestry, Nowoursynowska 159, 02-776 Warsaw, Poland; Forest Research Institute, Department of Computer Science and Modeling, Braci Leśnej 3, 05-090 Raszyn, Poland; University of Warsaw, Interdisciplinary Centre for Mathematical and Computational Modelling, Pawińskiego 5a, 02-106 Warsaw, Poland
Recommended Citation:
Zasada M.,Stereńczak K.,Dudek W.M.,et al. Horizon visibility and accuracy of stocking determination on circular sample plots using automated remote measurement techniques[J]. Forest Ecology and Management,2013-01-01,302