Keyword: growth and yield
- Predicting the impact of silvicultural treatments on yield, products and value.
http://www.for.gov.bc.ca/hre/pubs/pubs/0045.htm
pp. 44-60. In H.N. Chappell and Douglas A. Maguire (Editors). Predicting Forest Growth and Yield: Current Issues, Future Prospects. College of Forest Resources, Univ. Wash., Seattle, Wash. Inst. For. Resources Contribution No. 58. ...
- Comparison of Mcardle, DFSIM, and TASS growth and yield models.
http://www.for.gov.bc.ca/hre/pubs/pubs/0046.htm
Comparison of Mcardle, DFSIM, and TASS growth and yield models. ...
- Expanding concepts of growth and yield modelling to disease impacts and forest products.
http://www.for.gov.bc.ca/hre/pubs/pubs/0047.htm
Expanding concepts of growth and yield modelling to disease impacts and forest products. ...
- Modelling the growth of Douglas-fir in France.
http://www.for.gov.bc.ca/hre/pubs/pubs/0051.htm
Proceedings of the meeting on "Forest Growth Modelling and Simulation", Mensuration, Growth and Yield Section of IUFRO, Vienna, Austria. pp. 25-39. ...
- Impact of planting density and juvenile spacing on the yield of Douglas-fir.
http://www.for.gov.bc.ca/hre/pubs/pubs/0055.htm
pp. 143-158. In Joran Fries, Harold E. Burkhart and Timothy A. Max (editors). Proceedings of the Conference on Growth Models for Long Term Forecasting of Timber Yields and Forest Resources Management; Mensurations, Growth and Yield Section of IUFRO, Virginia Polytech. Inst and SU, Blacksburg, Virg. ...
- Site index conversion equations for mixed species stands.
http://www.for.gov.bc.ca/hre/pubs/pubs/0101.htm
Models are developed to predict the site index of one species in a mixed stand from the site index of a cohort. These models are applicable to site quality evaluation, growth and yield modelling, and timber management planning. A single-equation compatible site index conversion system is developed using the geometric mean regression (GMR) line for the following species mixes: coastal Douglas-fir/western hemlock; interior Douglas-fir/lodgepole pine, Douglas-fir/white spruce, Douglas-fir/western hemlock, Douglas-fir/western larch, white spruce/lodgepole pine, white spruce/subalpine fir, lodgepole pine/subalpine fir, and lodgepole pine/western larch. ...
- Effects of Thinning and Fertilizing Mixed Western Hemlock-Sitka Spruce Stands.
http://www.for.gov.bc.ca/hre/pubs/pubs/0313.htm
Limited information exists on the growth and yield of young mixed western hemlock (Tsuga heterophylla) and Sitka spruce (Picea sitchensis) stands on the Queen Charlotte Islands following pre-commercial thinning and fertilization. As a result, research into thinning and fertilization was initiated by the South Moresby Forest Replacement Account research committee. Our research project (Experimental Project [EP] 1097), conducted on Graham Island, investigates tree and stand growth responses to thinning and nitrogen and phosphorus fertilization in young Sitka spruce-western hemlock stands. In this extension note, we describe this project, present the 5-year response results taken from remeasurements after the 1996 growing season, and offer some preliminary conclusions. ...
- Early genetic gains verified in realized-gain trials of coastal Douglas-fir and western hemlock.
http://www.for.gov.bc.ca/hre/pubs/pubs/0352.htm
Coastal Douglas-fir and western hemlock breeding programs began in the late 1960s with the selection of better trees from natural stands throughout the coastal area. Extensive breeding and testing of these selected parents was carried out to learn more about genetic diversity patterns and performance stability, and to identify which parent trees produced offspring with superior performance potential. The testing programs allowed identification of superior parents from the original selections made in natural stands (Table 1). Information on the long-term growth and yield of offspring from these parents is needed to better predict volume and value gains relative to natural-stand seed. Data are also needed to assist with the adjustment of growth models to account for genetic gains. The first series of trials to provide this information for Douglas-fir and western hemlock was planted in 1992. ...
- Recommendations for development of a Growth and Yield Data Strategy for planted Conifers in Misiones, Argentina.
http://www.for.gov.bc.ca/hre/pubs/pubs/0362.htm
Recommendations for development of a Growth and Yield Data Strategy for planted Conifers in Misiones, Argentina. ...
- The effect of commercial thinning on the growth and yield of lodgepole pine.
http://www.for.gov.bc.ca/hre/pubs/pubs/0606.htm
The effect of commercial thinning on the growth and yield of lodgepole pine. ...
- Status of interior Douglas-fir growth and yield information in BC and yield prediction problems.
http://www.for.gov.bc.ca/hre/pubs/pubs/0611.htm
Status of interior Douglas-fir growth and yield information in BC and yield prediction problems. ...
- An analysis of problems in estimating the growth and yield of interior dry- belt stands.
http://www.for.gov.bc.ca/hre/pubs/pubs/0612.htm
An analysis of problems in estimating the growth and yield of interior dry- belt stands. ...
- British Columbia Forest Service's Science Program: Science to support sustainability.
http://www.for.gov.bc.ca/hre/pubs/pubs/1182.htm
The prime mandate of the BC Forest Service's Forest Science Program is to bring scientific innovation to bear on sustainable forest management. For over 80 years, its staff has been an integral part of many significant changes to forest policies and practices. Decentralized researchers are in direct contact with local forest managers and resource users throughout the province, ensuring a focus on operationally relevant research as well as providing an accessible source of best available scientific knowledge to support policies and practices. Five core research activities within the program, including growth and yield, silviculture, forest genetics, ecology and earth sciences, yield valuable short and long-term information about how to sustain ecosystems, enhance timber production and manage forests for a variety of resource uses. In cooperation with partners and clients in universities, institutes, government agencies, the forest industry and others in both research and extension, program scientists and st ...
- The Effect of the Silviculture Survey Parameters on the Free-Growing Decision Probabilities and Projected Volume at Rotation
http://www.for.gov.bc.ca/hre/pubs/pubs/1184.htm
This handbook discusses the silviculture survey system used by the B.C. Ministry of Forests to assess stands for free-growing status. The silviculture survey system is reviewed, and the decision curve as a statistical tool to assess risk is explained. Decision curves are used to explore the effects of changes to survey parameters, as determined by a simulation study of homogeneous stem maps. Projected volumes for homogeneous lodgepole pine stands (based on TASS, a growth and yield model) are also presented and discussed. The simulation study did not investigate the effects of disease, infestation, or brush competition on volume: all trees were assumed to be healthy and unimpeded by vegetation. ...
- Standing dead tree dynamics extracted from growth and yield permanent sample plots in British Columbia.
http://www.for.gov.bc.ca/hre/pubs/pubs/1204.htm
Standing dead tree dynamics extracted from growth and yield permanent sample plots in British Columbia. ...
- Effects of inbreeding on coastal Douglas fir growth and yield in operational plantations: a model-based approach.
http://www.for.gov.bc.ca/hre/pubs/pubs/1279.htm
Effects of inbreeding on coastal Douglas fir growth and yield in operational plantations: a model-based approach. ...
- An Early History of the Research Branch, British Columbia Ministry of Forests and Range.
http://www.for.gov.bc.ca/hre/pubs/pubs/1413.htm
The B.C. Forest Branch (now Service) was created in February 1912 but research activities didn't begin until 1921 when James (Alex) Alexander studied timber utilization, logging slash disposal, natural regeneration, tree growth and yield, and fire protection. In 1923 Assistant Chief Forester Robert St. Clair recommended the establishment of forest experimental stations in the major forest types of the province, resulting in the Aleza Lake Experiment Station near Prince George (in 1924) and the Cowichan Lake Research Station on Vancouver Island (in 1929). The Research Division was formally established in 1927 with a staff of seven and annual expenditures of $34 000. The director was Percy Barr. By 1930 the Research Division of the B.C. Forest Branch was the largest and most active forest research organization in Canada. In the ensuing decades the research program went through many changes and evolved into a province-wide multi-disciplinary organization. Based on archival material and interviews ...
- Modelling Boreal Mixedwoods with the Tree and Stand Simulator (TASS).
http://www.for.gov.bc.ca/hre/pubs/pubs/1420.htm
This Extension Note provides an overview of the TASS modelling project for boreal mixedwoods. A general discussion of the present needs of boreal forest managers is provided with an introduction to our mixedwood and complex stand modelling approach using the TASS v.III multicanopy, growth and yield model. An overview of the available tree and stand level information is provided as well as a large body of references for further reader interest. ...
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