Crown Condition Classification

Author : Anonim
Publisher : Unknown
Page : 92 pages
File Size : 44,9 Mb
Release : 2007
Category : Forest canopies
ISBN : UOM:39015087429687

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Crown-condition Classification by Anonim Pdf

The Forest Inventory and Analysis (FIA) Program of the Forest Service, U.S. Department of Agriculture, conducts a national inventory of forests across the United States. A systematic subset of permanent inventory plots in 38 States is currently sampled every year for numerous forest health indicators. One of these indicators, crown-condition classification, is designed to estimate tree crown dimensions and assess the impact of crown stressors. The indicator features eight tree-level field measurements in addition to variables traditionally measured in conjunction with FIA inventories: vigor class, uncompacted live crown ratio, crown light exposure, crown position, crown density, crown dieback, foliage transparency, and crown diameter. Indicators of crown health derived from the crown data are intended for analyses at the State, regional, and national levels, and contribute to the core tabular output in standard FIA reports. Crown-condition measurements were originally implemented as part of the Forest Health Monitoring (FHM) Program in 1990. Except for crown diameter, these measurements were continued when the FIA Program assumed responsibility for FHM plot-based detection monitoring in 2000. This report describes in detail the data collection and analytical techniques recommended for crown-condition classification.

Author : Joan DeYoung
Publisher : Unknown
Page : 159 pages
File Size : 44,7 Mb
Release : 2016
Category : Electronic books
ISBN : OCLC:1001573486

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Forest Measurements by Joan DeYoung Pdf

"This is a forest measurements textbook written for field technicians. Silvicultural applications and illustrations are provided to demonstrate the relevance of the measurements. Special “technique tips” for each skill are intended to help increase data collection accuracy and confidence. These include how to avoid common pitfalls, effective short cuts, and essentials for recording field data correctly. The emphasis is on elementary skills; it is not intended to be a timber cruising guide"--BC Campus website.

Author : Kenneth W. Outcalt
Publisher : Unknown
Page : 638 pages
File Size : 49,9 Mb
Release : 2002
Category : Forests and forestry
ISBN : MINN:31951D029963169

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Proceedings of the Eleventh Biennial Southern Silvicultural Research Conference by Kenneth W. Outcalt Pdf

Author : Anonim
Publisher : Unknown
Page : 614 pages
File Size : 49,9 Mb
Release : 1987
Category : Forests and forestry
ISBN : UOM:39015012631662

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General Technical Report SE by Anonim Pdf

Author : G. Bruce Wiersma
Publisher : CRC Press
Page : 792 pages
File Size : 54,5 Mb
Release : 2004-04-27
Category : Nature
ISBN : 9780203495476

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Environmental Monitoring by G. Bruce Wiersma Pdf

The current rate and scale of environmental change around the world makes the detection and understanding of these changes increasingly urgent. Subsequently, government legislation is focusing on measurable results of environmental programs, requiring researchers to employ effective and efficient methods for acquiring high-quality data. Envi

Author : Katherine A. McManus,Kathleen Stone Shields,Dennis R. Souto
Publisher : Unknown
Page : 248 pages
File Size : 55,7 Mb
Release : 2000
Category : Eastern hemlock
ISBN : MINN:31951D02964898P

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Proceedings by Katherine A. McManus,Kathleen Stone Shields,Dennis R. Souto Pdf

Author : Faizaan Naveed,Baoxin Hu,Jianguo Wang,G. Brent Hall
Publisher : Infinite Study
Page : 21 pages
File Size : 42,5 Mb
Release : 2024-07-01
Category : Mathematics
ISBN : 8210379456XXX

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Individual Tree Crown Delineation Using Multispectral LiDAR Data by Faizaan Naveed,Baoxin Hu,Jianguo Wang,G. Brent Hall Pdf

In this study, multispectral Light Detection and Ranging (LiDAR) data were utilized to improve delineation of individual tree crowns (ITC) as an important step in individual tree analysis. A framework to integrate spectral and height information for ITC delineation was proposed, and the multi-scale algorithm for treetop detection developed in one of our previous studies was improved. In addition, an advanced region-based segmentation method that used detected treetops as seeds was proposed for segmentation of individual crowns based on their spectral, contextual, and height information.

Author : Anonim
Publisher : Unknown
Page : 372 pages
File Size : 52,8 Mb
Release : 2004
Category : Forest plants
ISBN : MINN:31951D02981112K

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Field Instructions for the Annual Inventory of Washington, Oregon and California, 2004 by Anonim Pdf

Author : KaDonna C. Randolph
Publisher : Unknown
Page : 32 pages
File Size : 49,9 Mb
Release : 2006
Category : Forest canopies
ISBN : UOM:39015075616501

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Descriptive Statistics of Tree Crown Condition in the Southern United States and Impacts on Data Analysis and Interpretation by KaDonna C. Randolph Pdf

The U.S. Department of Agriculture Forest Service, Forest Inventory and Analysis Program (FIA) utilizes visual assessments of tree crown condition to monitor changes and trends in forest health. This report describes and discusses distributions of three FIA crown condition indicators (crown density, crown dieback, and foliage transparency) for trees in the Southern United States. Descriptive statistics are presented for all trees combined, by hardwood and softwood species groups, and for 53 individual species. Implications of these characteristics and other factors for the analysis of the phase 3 crown condition indicators are discussed.

Author : Anonim
Publisher : Unknown
Page : 522 pages
File Size : 40,8 Mb
Release : 2013-05
Category : Forest products
ISBN : UCBK:C083250966

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Resource Bulletin SRS by Anonim Pdf

Author : Anonim
Publisher : Unknown
Page : 220 pages
File Size : 42,7 Mb
Release : 2002
Category : Agriculture
ISBN : UGA:32108033096333

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Technical Bulletin by Anonim Pdf

Author : Kenneth W. Stolte
Publisher : Unknown
Page : 56 pages
File Size : 54,6 Mb
Release : 1997
Category : Forest health
ISBN : MINN:31951D015496900

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1996 National Technical Report on Forest Health by Kenneth W. Stolte Pdf

Author : Anonim
Publisher : Unknown
Page : 490 pages
File Size : 40,6 Mb
Release : 2015
Category : Forests and forestry
ISBN : UCBK:C112261228

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Canadian Journal of Forest Research by Anonim Pdf

Author : Joe H. Scott
Publisher : Unknown
Page : 68 pages
File Size : 52,5 Mb
Release : 2001
Category : Fire risk assessment
ISBN : MINN:31951D03001930H

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Assessing Crown Fire Potential by Linking Models of Surface and Crown Fire Behavior by Joe H. Scott Pdf

Fire managers are increasingly concerned about the threat of crown fires, yet only now are quantitative methods for assessing crown fire hazard being developed. Links among existing mathematical models of fire behavior are used to develop two indices of crown fire hazard-the Torching Index and Crowning Index. These indices can be used to ordinate different forest stands by their relative susceptibility to crown fire and to compare the effectiveness of crown fire mitigation treatments. The coupled model was used to simulate the wide range of fire behavior possible in a forest stand, from a low-intensity surface fire to a high-intensity active crown fire, for the purpose of comparing potential fire behavior. The hazard indices and behavior simulations incorporate the effects of surface fuel characteristics, dead and live fuel moistures (surface and crown), slope steepness, canopy base height, canopy bulk density, and wind reduction by the canopy. Example simulations are for western Montana Pinus ponderosa and Pinus contorta stands. Although some of the models presented here have had limited testing or restricted geographic applicability, the concepts will apply to models for other regions and new models with greater geographic applicability.

Author : David A. Marquis
Publisher : Unknown
Page : 28 pages
File Size : 52,9 Mb
Release : 1969
Category : Forest thinning
ISBN : MINN:31951D02964032F

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Thinning in Young Northern Hardwoods by David A. Marquis Pdf

S2The yield of even-aged hardwoods can be increased by a A program of regular thinnings. The questions are: How much increase can be expected? And what are the effects on quality? The 5-year results from a long-term study of thinning in young northern hardwoods on the Bartlett Experimental Forest in New Hampshire show that heavy thinning increased crop-tree basal-area growth by 53 percent and crop-tree diameter growth by 64 percent. There were no adverse effects on tree quality, and overall stand quality has been improved.S3.