Individual-tree diameter growth model for sugar maple trees in uneven-aged northern hardwood stands under selection system

2008 ◽  
Vol 256 (9) ◽  
pp. 1579-1586 ◽  
Author(s):  
Diane H. Kiernan ◽  
Eddie Bevilacqua ◽  
Ralph D. Nyland
Keyword(s):  
Growth Model ◽  
Sugar Maple ◽  
Diameter Growth ◽  
Selection System ◽  
Individual Tree ◽  
Northern Hardwood ◽  
Tree Diameter

Individual-tree diameter growth model for rebollo oak (Quercus pyrenaica Willd.) coppices

2008 ◽  
Vol 255 (3-4) ◽  
pp. 1011-1022 ◽  
Author(s):  
Patricia Adame ◽  
Jari Hynynen ◽  
Isabel Cañellas ◽  
Miren del Río
Keyword(s):  
Growth Model ◽  
Diameter Growth ◽  
Quercus Pyrenaica ◽  
Individual Tree ◽  
Tree Diameter

scholarly journals Growth of Saplings after Selection Cutting in Northern Hardwoods

2000 ◽  
Vol 17 (4) ◽  
pp. 149-152 ◽  
Author(s):  
Pablo J. Donoso ◽  
Ralph D. Nyland ◽  
Lianjun Zhang
Keyword(s):  
Acer Saccharum ◽  
Sugar Maple ◽  
Age Groups ◽  
Fagus Grandifolia ◽  
Diameter Growth ◽  
Selection System ◽  
Northern Hardwood ◽  
Selection Cutting ◽  
Single Tree Selection ◽  
Old Trees

Abstract We evaluated height and diameter growth of 19 sugar maple (Acer saccharum Marsh.) and 20 American beech (Fagus grandifolia Ehrh.) saplings in a 22 ac northern hardwood selection system stand cut in Fall 1973 to a residual density of 73 ft²/ac, and again in Summer 1993 to 82 ft²/ac. We classified the sample trees according to the proportion of total age represented by the 19 yr period after the 1973 selection cutting: more than 80% (young trees), 67–80% (intermediate trees), and less than 67% (old trees). Young trees reached 1 in. dbh almost one decade sooner than old trees (25.7 vs. 33.8 yr), but the two age groups did not differ significantly in height when they reached that threshold diameter. Young and intermediate-aged trees grew more rapidly in height than older trees, especially during the first 10 yr after cutting (6.1 vs. 4.9 ft during the 10 yr period). Height growth of saplings for the last 9 yr of the first cutting cycle did not differ significantly from that prior to the first cutting (2.4 ft in 5 yr), but differed from the growth during the first 10 yr after the 1973 cutting (2.85 ft in 5 yr). Young trees also took 33% less time to reach 1 in. dbh during the first cutting cycle. Findings show the influence of single-tree selection cutting on the development of small trees, and highlight the importance of matching residual density and cutting cycle length in order to maintain good rates of height and diameter growth among young age classes in uneven-aged selection system stands. North. J. Appl. For. 17(4):149–152.

Deriving Tree Diameter Growth and Probability of Survival Equations from Successive Diameter Distributions

2008 ◽  
Vol 54 (1) ◽  
pp. 31-35
Author(s):  
Thomas G. Matney ◽  
Emily B. Schultz
Keyword(s):  
General Procedure ◽  
Growth And Yield ◽  
Diameter Distribution ◽  
Diameter Growth ◽  
Individual Tree ◽  
Statistical Probability ◽  
Growth And Survival ◽  
Tree Diameter ◽  
Growth And Yield Models ◽  
Diameter Distributions

Abstract Many growth and yield models have used statistical probability distributions to estimate the diameter distribution of a stand at any age. Equations for approximating individual tree diameter growth and survival probabilities from dbh can be derived from these models. A general procedure for determining the functions is discussed and illustrated using a loblolly pine spacing study. The results from the spacing study show that it is possible to define tree diameter growth and survival probability functions from diameter distributions with an accuracy sufficient to obtain a link between the individual tree and diameter growth and yield models.

scholarly journals Testing Lake States TWIGS: Five-Year Growth Projections for Upland Hardwoods in Northern Lower Michigan

1996 ◽  
Vol 13 (4) ◽  
pp. 182-188 ◽  
Author(s):  
Patrick J. Guertin ◽  
C. W. Ramm
Keyword(s):  
Sugar Maple ◽  
Diameter Growth ◽  
Red Oak ◽  
Time Interval ◽  
Northern Red Oak ◽  
Red Maple ◽  
White Oak ◽  
Validation Data ◽  
Individual Tree ◽  
Lake States

Abstract Five-year diameter growth, basal area growth, and mortality for five upland hardwood species in northern Lower Michigan were compared to projections from Lake States TWIGS. The species studied were northern red oak, white oak, other red oak (pin oak and black oak combined), sugar maple, and red maple. The validation data consisted of individual tree measurements from 44 stands across 10 ecological land types on the Manistee National Forest. The stands were measured in 1986 and 1991; during this time interval stands experienced a drought and outbreaks of leaf defoliators. For individual dbh classes, 5 yr diameter growth was predicted within ± 0.3 in. for all species. Mean errors for BA projections were within ± 5 ft²/ac for all species, and mean error for trees/ac ranged from - 33 for other red oak to + 16 for sugar maple. Although precision was variable, Lake States TWIGS provided accurate predictions of 5 yr diameter growth for the five species tested. Projections of mortality were less accurate. North. J. Appl. For. 13(4):00-00.

Sign in / Sign up

Export Citation Format

Share Document