Use Of Site Factors To Predict Lodgepole Pine And Interior Spruce Site Index In The Sub Boreal Spruce Zone
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Use Of Site Factors To Predict Lodgepole Pine And Interior Spruce Site Index In The Sub Boreal Spruce Zone
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Author :
language : en
Publisher:
Release Date : 1994
Use Of Site Factors To Predict Lodgepole Pine And Interior Spruce Site Index In The Sub Boreal Spruce Zone written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with categories.
Site index is the measure of a given tree species' productivity. Relationships between site index & ecological site quality have been the focus of recent research efforts in British Columbia that have used categorical measures of ecological site quality to explain the variation in site index of major tree species. This report describes a study that expands these efforts to lodgepole pine & interior spruce. To establish a link between ecological site quality & forest productivity in the sub-boreal spruce zone of the Prince Rupert Forest Region, site index & site data were obtained from 93 lodgepole pine stands and 77 interior spruce stands distributed across two climatic regimes, eight soil moisture regimes, and five soil nutrient regimes. These regimes were used as categorical variables to stratify the stands and in the subsequent regression analysis of the data. Six types of regression models were developed and one model, which showed strong relationships between site index & some ecological parameters, was used to draft site index isolines which were then superimposed onto edatopic grids. The results test the capability of estimates of soil moisture & soil nutrient regimes as predictors of pine & spruce site index.
Ecology And Management Of Sitka Spruce
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Author : N. Merle Peterson
language : en
Publisher: UBC Press
Release Date : 2011-11-01
Ecology And Management Of Sitka Spruce written by N. Merle Peterson and has been published by UBC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-11-01 with Technology & Engineering categories.
Sitka spruce, the largest of the world's spruces, is an important component of British Columbia's coastal forests. Its ecology gives it a special place in the sustainable management of the province's forests. However, in west coast forestry it is poorly known in comparison with its main coniferous companions -- Douglas-fir, western redcedar, and western hemlock. As an important international forestry resource, it is crucial that Sitka spruce -- its ecology and the ecosystems in which it occurs -- be clearly understood by those who are involved with its management.
A Site Index Model For Lodgepole Pine In The Sub Boreal Spruce Biogeoclimatic Zone Of British Columbia
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Author : Adrian Emerson Batho
language : en
Publisher:
Release Date : 2011
A Site Index Model For Lodgepole Pine In The Sub Boreal Spruce Biogeoclimatic Zone Of British Columbia written by Adrian Emerson Batho and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.
An interior lodgepole pine stand level height growth and site index model is developed using stochastic differential equations and state-space approaches. Two data types, stem analysis and permanent sample plots were used. Four formulations of the Bertalanffy/Richards growth equation were evaluated using the EasySDE program. Data was partitioned based on data type, stand origin and combinations thereof. The best model was identified using maximum likelihood, and differences among data types and stand origins were evaluated for using likelihood ratio tests. A Power formulation was found to be statistically superior for all data types and origins. Combining the Stem Analysis and Permanent Sample Plot data in such a way that their respective variance structures was accommodated in parameter estimation was significantly better than the individual and origin specific runs, even though this increased the number of parameters. The resultant model was compared to the existing provincial model and differences were observed. --P. ii.
Long Term Results From Ep841
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Author : Teresa A. Newsome
language : en
Publisher:
Release Date : 2016
Long Term Results From Ep841 written by Teresa A. Newsome and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with Douglas fir categories.
Relationships Between Site Index And Soil Moisture And Nutrient Regimes For Western Hemlock And Sitka Spruce
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Author : Gordon J. Kayahara
language : en
Publisher:
Release Date : 1996
Relationships Between Site Index And Soil Moisture And Nutrient Regimes For Western Hemlock And Sitka Spruce written by Gordon J. Kayahara and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Sitka spruce categories.
Harmonisation Of Regulatory Oversight In Biotechnology Safety Assessment Of Transgenic Organisms Volume 3 Oecd Consensus Documents
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Author : OECD
language : en
Publisher: OECD Publishing
Release Date : 2010-11-09
Harmonisation Of Regulatory Oversight In Biotechnology Safety Assessment Of Transgenic Organisms Volume 3 Oecd Consensus Documents written by OECD and has been published by OECD Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-11-09 with categories.
These OECD Biosafety Consensus Documents identify elements of scientific information used in the environmental safety and risk assessment of transgenic organisms which are common to OECD member countries and some non members associated with the work.
Height Growth Response Of Interior Spruce And Lodgepole Pine To Various Site Treatments In The Sub Boreal Spruce Biogeoclimatic Zone
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Author : Clifford Stanley Robertson
language : en
Publisher:
Release Date : 1999
Height Growth Response Of Interior Spruce And Lodgepole Pine To Various Site Treatments In The Sub Boreal Spruce Biogeoclimatic Zone written by Clifford Stanley Robertson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with categories.
Site Index Estimates By Site Series For Coniferous Tree Species In British Columbia
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Author : British Columbia. Ministry of Forests
language : en
Publisher: British Columbia, Ministry of Forests
Release Date : 1997
Site Index Estimates By Site Series For Coniferous Tree Species In British Columbia written by British Columbia. Ministry of Forests and has been published by British Columbia, Ministry of Forests this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Technology & Engineering categories.
Site index is a measure of forest site growth potential, and is important for forest management and timber supply analysis. This document presents a first approximation of estimates of average site index for coniferous crop tree species according to site units of the biogeoclimatic ecosystem classification (BEC) system of British Columbia. The estimates are displayed in site index/site unit tables. Information is included on site index, content and reliability of the tables, the method used to produce the tables, the relationship between site index and other site variables, had how to use the BEC method to estimate site index in the field.
Canadian Journal Of Forest Research
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Author :
language : en
Publisher:
Release Date : 2012
Canadian Journal Of Forest Research written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Forest genetics categories.
Condition Growth And Projected Yield Of Lodgepole Pine And Interior Spruce 20 Years After Rehabilitation Of An Understocked Site In North Central British Columbia
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Author : Roger J. Whitehead
language : en
Publisher:
Release Date : 2011
Condition Growth And Projected Yield Of Lodgepole Pine And Interior Spruce 20 Years After Rehabilitation Of An Understocked Site In North Central British Columbia written by Roger J. Whitehead and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Mathematics categories.
The Stony Lake trial was established in 1987 to benchmark growth performance of interior spruce and lodgepole pine planted into 12 treatment regimes for rehabilitating an understocked sub-boreal spruce site. All combinations of three options for primary site clearing treatments (burn, spray and burn, or windrow), two options for secondary site preparation treatments (disc-trenching or no disc-trenching), and two options for tertiary weeding treatments (broadcast application of herbicide three years after planting or no treatment) were tested. The objectives of this report were to 1) document the status of interior spruce and lodgepole pine trees planted into the 12 treatment regimes at the Stony Lake long-term research trial and 2) use these early growth data to customize Tree and Stand Simulator (TASS) runs to project potential impact on yield and expected value at rotation.--Includes text from document.