4 edition of Growth intercept, years-to-breast-height, and juvenile height growth models for ponderosa pine found in the catalog.
Growth intercept, years-to-breast-height, and juvenile height growth models for ponderosa pine
Gordon D. Nigh
by British Columbia Ministry of Forests, Forest Science Program in Victoria
Written in English
Includes bibliographical references (p. 6).
|Statement||Gordon D. Nigh.|
|Series||Technical report -- 002, Technical report (British Columbia. Forest Science Program) -- 002.|
|Contributions||British Columbia. Forest Science Program.|
|The Physical Object|
|Pagination||v, 6 p. :|
Restoration of pine forests has become a priority for managers who are beginning to embrace ideas of highly heterogeneous forest structures that potentially encourages high levels of regeneration. This study utilizes stem-mapped stands to assess how simulated regeneration timing and magnitude influence longevity of reduced fire behavior by linking growth and yield model outputs to a crown fire. 1. Introduction. Competition among trees is one of the main factors determining their growth and mortality (Oliver and Uzoh, , Zeide, ).The competition stressors can be long-term or short-term (van Mantgem et al., ).For a model to adequately characterize tree growth it must include estimates of mortality rates (or survival), because mortality is an integral part of stand .
Introduction. The World Health Organization (WHO) Child Growth Standards for children 0–5 years of age are based on a prescriptive approach designed to depict how all children should grow when their health care needs are met (Garza & de Onis ).The children whose growth was documented to derive the WHO standards were internationally diverse (Brazil, Ghana, India, Norway, Oman and the. One of the main issues when analyzing long-term growth trends is disentangling the age/size trend in the growth curve of individual trees from the long-term growth trend in the tree population, and a variety of methods exists to deal with this challenge (Bontemps et al., , Bontemps and Esper, , Peters et al., ).
We reviewed the growth characteristics of American boys and girls from published studies, including age at takeoff, age at peak height velocity, peak height velocity, duration of puberty, and the magnitude of the pubertal contribution to adult height. Age at takeoff is highly variable and sex-dependent. The mean takeoff age in children growing at an average rate is ∼11 years in boys and 9. The growth characteristics of ponderosa pine might facilitate access to the roost. High crowns and a lack of branches on the lower bole increase the probability ponderosa pine will survive frequent, low intensity ground fires that were common in this dry forest. These characteristics create relatively open conditions under the canopy.
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Eighty plots of ponderosa pine stem analysis data were collected across the range of ponderosa pine in British Columbia. The years-to-breast-height, growth intercept, and juvenile height models were developed with these data. Height-age models were also developed, but are described elsewhere.
Growth intercept, years-to-breast-height, and juvenile height growth models for ponderosa pine. Victoria: British Columbia Ministry of Forests, Forest Science Program, (OCoLC) Growth Intercept, Years-to-Breast-Height, and Juvenile Height Growth Models for Ponderosa Pine.B.C.
Min. For., Technical Report Nigh, G.D. and P.J. Martin. A method to assess the performance of growth intercept models in British Columbia. Growth intercept, years-to-breast-height, and ju- venile height growth models for ponderosa pine.
B.C. Min. and Love, B.A. Juvenile height development in. interior spruce stands of. Years-to-stump-height and years-to-breast-height model for Interior Douglas-fir, western larch, and ponderosa pine.
Northwest Sci. Nigh, G.D. and P.J. And juvenile height growth models for ponderosa pine book. Sixty-five jack pine (Pinus banksiana Lamb.) plantations (height growth and variable growth intercept (GI) models for jack pine plantations in northern.
Height models for juvenile even aged mixed-species stands were developed for locations near Nelson, British Columbia.
Separate models were developed for each conifer species found, as well as for paper birch (Betula papyrifera). The objectives were to develop models for: 1) the number of years to reach breast height; 2) height achieved at a given age above breast height (height yield); 3.
Title: Growth TechReport4 Created Date: 9/24/ PM. Genetic Conservation of Tropical Trees. In The Overstory Book: Cultivating Connections with Trees Edited by C.R. Elevitch. Permanent Agriculture Resources, Holualoa, USA. Growth Intercept, Years-to-Breast-Height, and Juvenile Height Growth Models for Ponderosa Pine.
Growth intercept models which relate the early average height growth of trees to site index, have been shown to provide reasonable site index estimates for young stands [35,36,46,59].
Although the growth intercept model has proven to provide significant information on growth and yield of conifers, it still represents an early estimate of the.
Models to predict height SDS at 5 y were developed using data for 1 yr (Model 1) and 2 yrs (Model 2). The data of (63%) children were available: SGA: n =AGA: n = Highlights A modified version of the 3-PG model was used to predict growth of Pinus taeda plantations.
The model was calibrated with data from one highly productive stand. Seven fast and slow growing plantations were used to validate model predictions.
3-PG produced accurate predictions of stem biomass, diameter and volume growth. It was less accurate in predicting stand density. Height distribution of five cohorts of year-old Swiss conscripts from / to / (representing ~90% of the total census population). Request PDF | Stand Density, Drought and Herbivory Constrain Ponderosa Pine Regeneration Pulse | Trees in dry forests often regenerate in episodic pulses when wet periods coincide with ample seed.
Gordon D. Nigh's 57 research works with citations and 1, reads, including: The Effect of Leader Damage on White Spruce (Picea glauca) Site Tree Height Growth and Site Index. In this study, we focused on structural models of weight and height growth. 6 Several models have been developed to model infant weight and height growth (Count and Kouchi models, and infancy component of the Karlberg model), 7,8,9,10 childhood growth (Jenss and Reed 1st and 2nd order models), 11,12 pubertal growth or total growth.
13 However. Height growth of black spruce in British Columbia. For. Chron. Nigh, G. Site index conversion equations for mixed trembling aspen and white spruce stands in northern British Columbia.
Silva Fennica 36(4): Nigh, G.D., P.V. Krestov, and K. Klinka. Trembling aspen height-age models for British Columbia. Fitted growth models for height of children.
Figure 2 shows the graphical representation of the six models for height fitted from 3 months to 10 years, showing the Count, the adapted Jenss-Bayley and Berkey-Reed 1st order models fitting well to the data at. is the growth per time period, in this case growth per year. Between the two measurements, the population grew by 15, = 3, but it took = 4 years to grow that much.
To find the growth per year, we can divide: elk / 4 years = elk in 1 year. We can now write our equation in whichever form is preferred.
The number of planted trees per hectare influences individual volume growth, which in turn can affect wood properties. The objective of this study was to assess the effect of six different plantation spacings of jack pine (Pinus banksiana Lamb.) 25 years following planting on tree growth, morphology, and wood properties.
Stem analyses were performed to calculate annual and cumulative diameter. The Mongolian pine (Pinus sylvestris var. mongolica) is one of the most common tree species in semiarid and arid areas of China, especially in the sand dunes of the Hulunbeier steppe.
This study addresses the morphological and physiological characteristics of the Mongolian pine according to sand dune height. Five sites were chosen with various sand dune heights (P1–P5).measure height increment during the previous growing season, for juvenile trees growing under open conditions at 12 sites.
As expected, height growth rates generally decreased with increasing altitude. However, relationships between altitude and height growth did not differ among species. As growth rates of cold-resistant N. pumilio were.The old-growth, mixed-conifer forest community was primarily comprised of white fir, sugar pine, incense cedar, ponderosa pine (P.
ponderosa), Jeffrey pine (P. jeffreyi), and black oak (Quercus kelloggii). The climate was characterized as Mediterranean, with warm, dry summers and cold, wet winters.