Actual and projected growth and yields of Populus 'Tristis #1' under intensive culture

1976 ◽  
Vol 6 (2) ◽  
pp. 132-144 ◽  
Author(s):  
Alan R. Ek ◽  
David H. Dawson
Keyword(s):  
Simulation Model ◽  
Tree Growth ◽  
Dry Weight ◽  
Intensive Culture ◽  
Annual Increment ◽  
Growth Simulation ◽  
Stand Growth ◽  
Mean Annual Increment ◽  
Stand Characteristics ◽  
Branch Wood

Yields and related stand characteristics of Populus 'Tristis #1' cuttings based on 4 years of growth under intensive culture (fertilization and irrigation) at square spacings of 0.75, 1, and 2 ft (0.23, 0.30 and 0.61 m) in northern Wisconsin are reported. Stem and branch wood yields were 40 390, 45 132, and 27 567 lb/acre (45 272, 50 586, and 30 899 kg/ha) for these spacings, and current annual increment peaked at age 3 for the 0.75- and 1-ft spacings. Tree growth and competition information from these plots was then used to calibrate a stand growth simulation model to develop yield projections to the 10- to 25-year range for the above plus 4-, 8-, and 12.7-ft (1.22-, 2.44-, and 3.87-m) spacings. Mean annual increment in terms of stem and branch wood dry weight for the projections peaked at about 8–15 years for all six spacings with values in the range of 13 881 – 16 584 lb/acre (15 559 – 18 588 kg/ha), respectively. The maximum mean annual increment was obtained at age 15 with a 4-ft spacing. Results further indicate substantial product-oriented flexibility in the choice of spacings and rotation ages since curves of mean annual increment are both similar and relatively flat in the 10- to 20-year range, except for the two widest spacings. A discussion of stand model projection methodology, reliability, and limitations is presented along with suggestions for more refined projections.

Growth characteristics of lodgepole pine associated with the start of mountain pine beetle outbreaks

1983 ◽  
Vol 13 (1) ◽  
pp. 137-144 ◽  
Author(s):  
D. M. Shrimpton ◽  
A. J. Thomson
Keyword(s):  
Tree Growth ◽  
Mountain Pine Beetle ◽  
Cost Effective ◽  
Annual Increment ◽  
Growth Ratio ◽  
Stand Growth ◽  
Mountain Pine ◽  
Periodic Growth ◽  
Pine Beetle ◽  
Mean Annual Increment

The dynamics of tree and stand growth were studied in six small but expanding mountain pine beetle outbreaks in British Columbia. Stands had exceeded a previously reported hazard threshold of age 80 years by 26 years, and a second frequently used hazard threshold of 20.5 cm mean dbh was exceeded by 37 years. However, stands had exceeded maturity, as defined by the intersection of current annual increment (CAI) and mean annual increment (MAI), by an average of only 17 years. In all cases, the beginnings of the outbreaks were coincident with a period of reduced tree growth. This reduced tree growth was difficult to detect at breast height, with a consequent failure of the periodic growth ratio to indicate susceptibility. Although the stands were past the point of maturity, the dominant and codominant trees continued to add significant wood volume, which could make surveillance for incipient outbreaks and subsequent control actions cost effective.

scholarly journals Effect of soil type on mean annual increment, wood anatomy and properties of 33-year-old Corymbia citriodora (Hook.), K. D. Hill, & L. A. S. Johnson

2021 ◽  
Vol 10 (10) ◽  
pp. e558101019004
Author(s):  
Willyam de Lima Vieira ◽  
Erick Phelipe Amorim ◽  
Caio Corsato Correa ◽  
Fabio Minoru Yamaji ◽  
Miguel Luiz Menezes Freitas ◽  
...  
Keyword(s):  
Tree Growth ◽  
Water Availability ◽  
Annual Increment ◽  
The Mean ◽  
Fiber Cell Wall ◽  
Red Latosol ◽  
Corymbia Citriodora ◽  
Mean Annual Increment ◽  
Water Holding ◽  
Physical And Mechanical Characteristics

This study aimed to determine the effects of physical, chemical and water-holding capacity of Quartzarenic Neosol, Red Latosol and Red Nitosol on tree growth, physicomechanical properties and anatomical features of wood from 33-year-old C. citriodora plantations. More clayey soils with higher water availability, such as Red Latosol and Red Nitosol, increased the mean annual increment and heartwood percentage. In more sandy soils, such as Quartzarenic Neosol, density increased, but the size and diameter of fibers and vessels decreased, and both fiber cell wall thickness and frequency of vessels and rays increased. Wood shrinkage and mechanical properties did not differ between soils. We observed a gradual increase in the anatomical, physical and mechanical characteristics in the pith-bark direction. The uniformity index showed that Quartzarenic Neosol and Red Latosol soils produced more homogeneous woods. We concluded that soil texture and water availability influenced tree growth, anatomical properties and wood density.

scholarly journals Comparison of the Growth of SixEucalyptusSpecies in Angola

2011 ◽  
Vol 2011 ◽  
pp. 1-9 ◽  
Author(s):  
Cristobal Delgado-Matas ◽  
Timo Pukkala
Keyword(s):  
Species Introduction ◽  
Annual Increment ◽  
Eucalyptus Saligna ◽  
Stand Volume ◽  
X Ray ◽  
Optimal Rotation ◽  
The Mean ◽  
Introduction Experiment ◽  
Mean Annual Increment ◽  
Stand Characteristics

Eucalyptusspecies have been planted in Angola since the early twentieth century. The species introduction experiment of Tchianga, in the Angolan Highlands, was established in 1966/1967. The experiment included several tropical pines and eucalypts. The plots were 43 years old when measured in 2009. Species includedEucalyptus salignaSm.,E. camaldulensisDehnh.,E. macarthuriiH. Deane & Maiden,E. resiniferaSm.,E. siderophloiaBenth., andE. grandisHill ex. Maiden.E. salignahad the highest stand volume at 43 years (1427 m3 ha−1), followed byE. grandis(1006 m3 ha−1).E. macarthuriiandE. camaldulensishad the lowest stand volume (423 and 511 m3 ha−1, resp.). Using X-ray analyses of increment cores, it was possible to study the temporal development of the stand characteristics. An analysis of the mean annual increment showed that the optimal rotation length for most of the studied eucalypts is around 22 years with the exception ofE. resinifera, for which 12–15 years is the best.E. salignahad the highest maximum mean annual increment (MMAI) of 37 m3 ha−1attained at 22 years of age.E. grandisreached its MMAI of 25 m3 ha−1at 28 years. The results suggest thatE. salignais the most recommendedEucalyptusspecies for new plantations in Angola.

scholarly journals Above-ground dendromass of sprouted black locust energy plantations: a case study

2017 ◽  
Vol 23 (1-4) ◽  
Author(s):  
Zs. Keserü ◽  
I. Csiha ◽  
B. Bakti ◽  
K. Rédei
Keyword(s):  
Black Locust ◽  
Robinia Pseudoacacia ◽  
Dry Weight ◽  
Test Results ◽  
Annual Increment ◽  
The Mean ◽  
Energy Plantations ◽  
Robinia Pseudoacacia L ◽  
Mean Annual Increment

Black locust (Robinia pseudoacacia L.) can be considered as one of the most suitable tree species for establishing energy plantations due to its favourable growing characteristics such as vigorous growing potential in the juvenile phase, excellent coppicing ability, a relatively high resistance to pests. Based on national and international test results the mean annual increment of oven-dry weight of energy plantations regenerated by coppicing generally exceeds the first cycle plantations established by seedlings.

scholarly journals Fuel manipulation with herbicide treatments to reduce fire hazard in young pine (Pinus elliottii × P. caribaea) plantations in south-east Queensland, Australia

2012 ◽  
Vol 21 (8) ◽  
pp. 992 ◽  
Author(s):  
Tom Lewis ◽  
Joanne De Faveri
Keyword(s):  
Adverse Effects ◽  
Tree Growth ◽  
Prescribed Fire ◽  
Fire Hazard ◽  
Dry Weight ◽  
Pinus Elliottii ◽  
Pine Plantations ◽  
Prescribed Burns ◽  
Standing Biomass ◽  
Herbicide Treatments

Wildfire represents a major risk to pine plantations. This risk is particularly great for young plantations (generally less than 10 m in height) where prescribed fire cannot be used to manipulate fuel biomass, and where flammable grasses are abundant in the understorey. We report results from a replicated field experiment designed to determine the effects of two rates of glyphosate (450 g L–1) application, two extents of application (inter-row only and inter-row and row) with applications being applied once or twice, on understorey fine fuel biomass, fuel structure and composition in south-east Queensland, Australia. Two herbicide applications (~9 months apart) were more effective than a once-off treatment for reducing standing biomass, grass continuity, grass height, percentage grass dry weight and the density of shrubs. In addition, the 6-L ha–1 rate of application was more effective than the 3-L ha–1 rate of application in periodically reducing grass continuity and shrub density in the inter-rows and in reducing standing biomass in the tree rows, and application in the inter-rows and rows significantly reduced shrub density relative to the inter-row-only application. Herbicide treatment in the inter-rows and rows is likely to be useful for managing fuels before prescribed fire in young pine plantations because such treatment minimised tree scorch height during prescribed burns. Further, herbicide treatments had no adverse effects on plantation trees, and in some cases tree growth was enhanced by treatments. However, the effectiveness of herbicide treatments in reducing the risk of tree damage or mortality under wildfire conditions remains untested.

scholarly journals ECONOMIC APPROACH TO THE CHOICE OF TARGET WOOD SPECIES FOR THE FOREST GROWING IN KAMA REGION OF THE REPUBLIC OF TATARSTAN

2017 ◽  
pp. 20-27
Author(s):  
Пуряев ◽  
Aynur Puryaev ◽  
Мифтахов ◽  
Timur Miftakhov ◽  
Демаков ◽  
...  
Keyword(s):  
Tree Species ◽  
Market Value ◽  
Economic Assessment ◽  
Oak Forests ◽  
Forest Site ◽  
Economic Approach ◽  
Annual Increment ◽  
The Republic ◽  
Standard Terms ◽  
Mean Annual Increment

The objectives of economic assessment of forests, growing on rich soil and environmental conditions, are especially important for the Republic of Tatarstan, as forest site conditions are presented, mostly, fresh suramens and sudubravas. The aim is to develop an algorithm and a mathematical model of the tax and market value dynamics of stands, needed to justify the choice of target tree species. The object of the study is served as detached electronic database of forestry and forest taxation indices of Kama region, general commodity tables and rate per unit volume of standing wood. The methodology of the study was consistent sort and organize raw data on the studied parameters, as well as the drawing up of mathematical models of the dynamics of the studied parameters. According to the research rezults the algorithm of selecting the target tree species was developed, providing the highest economic benefit in cultivation. The pine stands are most profitable to grow at fresh suramens and oak forests at fresh sudubravas. Age of stand’s economic maturity, which occurs at the climax moment of values of mean annual increment of its tax value, is much lower for most tree species, than the established standard terms of logging.

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