Assessing the quality of permanent sample plot databases for growth modelling in forest plantations

Climate has a considerable influence on tree growth. Forest managers benefit from the empirical study of the historic relationship between climatic variables and tree growth to support forest management frameworks which are to be applied under scenarios of climate change. Through this research, we have utilized long-term permanent sample plot records, historic climate datasets, and linear mixed modelling techniques to evaluate the historic influence of climatic variables on the growth rates of major boreal tree species in Newfoundland and Labrador, Canada. For the commercially significant spruce and fir forests of the province, we found growing degree days (GDD) to negatively correlate with tree productivity in warmer regions, such as much of Newfoundland (±1,350 GDD), but positively correlate with growth in cooler regions, such as those in Labrador (±750 GDD). With respect to precipitation, environmental moisture was not on average a limiting factor to species productivity in the province. These dynamics have implications for the productivity of the spruce-fir forests of the study area when considered alongside contemporary climate projections for the region, which generally entail both a warmer and wetter growing environment.

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Development of artificially established spruce stand at the site of mountain beech after intensive selection thinning

Glasnik Sumarskog fakulteta ◽

10.2298/gsf0489063b ◽

2004 ◽

pp. 63-75

Author(s):

Martin Bobinac

Keyword(s):

Basal Area ◽

The State ◽

Sample Plot ◽

Height Increment ◽

Current Volume ◽

Volume Increment ◽

The Future ◽

Permanent Sample Plot

The effects of selection thinning were analyzed at a permanent sample plot in the artificially established spruce stand aged 32 years, on the site of mountain beech. The state in the 32-year-old stand was as follows: 3911 trees per ha, basal area 57.5 m2ha-1 and volume 378.3 m3ha-1. Selection thinning removed 1378 tree per ha (35.2%) and 110 m3ha-1 (29.2%), and in the period between the ages of 32 and 40 years, predominantly because of mortality, another 550 trees per ha and 21.8 m3ha-1. On the remaining trees during the period between the ages of 32 and 40 years, basal area increased by 33%, and volume by 67%. Current volume increment was 20.7 m3ha-1 and it was concentrated on the future trees (28% of the total number of trees produces 52% of volume increment). The disproportion in the intensity of diameter and height increment after the thinning resulted in the increase of form quotient.

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Penobscot Experimental Forest boundary, roads, trails, management units, and permanent sample plot locations (2nd Edition)

Forest Service Research Data Archive ◽

10.2737/rds-2014-0008-2 ◽

2020 ◽

Author(s):

Liam F. Kenefic ◽

Bethany L. Muñoz Delgado ◽

Nicole S. Rogers ◽

Andrew R. Richley

Keyword(s):

Sample Plot ◽

Management Units ◽

Permanent Sample Plot ◽

Forest Boundary

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Penobscot Experimental Forest boundary, roads, trails, management units, and permanent sample plot locations (1st Edition)

Forest Service Research Data Archive ◽

10.2737/rds-2014-0008 ◽

2014 ◽

Cited By ~ 1

Author(s):

Nicole S. Rogers ◽

Laura S. Kenefic ◽

Alan J. Kimball ◽

John C. Brissette

Keyword(s):

Sample Plot ◽

Management Units ◽

Permanent Sample Plot ◽

Forest Boundary

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A conceptual model of forest stand development based on permanent sample-plot data in Estonia

Scandinavian Journal of Forest Research ◽

10.1080/14004080510041039 ◽

2005 ◽

Vol 20 (sup6) ◽

pp. 94-101 ◽

Cited By ~ 15

Author(s):

Ahto Kangur ◽

Henn Korjus ◽

Kalev Jõgiste ◽

Andres Kiviste

Keyword(s):

Conceptual Model ◽

Forest Stand ◽

Stand Development ◽

Sample Plot ◽

Permanent Sample Plot

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Assessment of Dendrochronological Year-of-Death Estimates Using Permanent Sample Plot Data

Tree-Ring Research ◽

10.3959/2010-10.1 ◽

2012 ◽

Vol 68 (1) ◽

pp. 3-16 ◽

Cited By ~ 10

Author(s):

Eileen L. Jones ◽

Lori D. Daniels

Keyword(s):

Sample Plot ◽

Permanent Sample Plot

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The stand dynamics of lodgepole pine

Canadian Journal of Forest Research ◽

10.1139/x88-193 ◽

1988 ◽

Vol 18 (10) ◽

pp. 1255-1260 ◽

Cited By ~ 7

Author(s):

D. E. Tait ◽

C. J. Cieszewski ◽

I. E. Bella

Keyword(s):

General Framework ◽

Lodgepole Pine ◽

Volume Growth ◽

Variable Density ◽

Forest Service ◽

Stand Dynamics ◽

Sample Plot ◽

Site Specific ◽

Permanent Sample Plot ◽

A Site

A general stand model is fitted to a set of permanent sample plot data for lodgepole pine in Alberta. The model represents a site-specific, variable-density stand model for volume growth and mortality of lodgepole pine. The structure of the model provides a general framework for examining volume growth and mortality in lodgepole pine. The model's performance is compared with the Alberta Forest Service yield tables and with the results of an experimental thinning study.

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Physical Quality of an Oxisol in Different Agricultural Systems in Brazilian Cerrado

Journal of Agricultural Science ◽

10.5539/jas.v10n7p46 ◽

2018 ◽

Vol 10 (7) ◽

pp. 46

Author(s):

Diego Dos Santos Pereira ◽

Rafael Montanari ◽

Christtiane Fernandes Oliveira ◽

Jean Carlos de Almeida Ramos ◽

Alan Rodrigo Panosso ◽

...

Keyword(s):

Bulk Density ◽

Total Porosity ◽

Forest Plantations ◽

Soil Resistance ◽

Brazilian Cerrado ◽

Physical Quality ◽

Soil Physical Quality ◽

The Impact ◽

Resistance To Penetration

The soil physical quality is a way of evaluating the current condition of forest plantations that is growing in the southeast region of Mato Grosso do Sul State. In this sense, this work aimed to evaluate the impact of the forest plantations on the physical quality of an Oxisol (Haplic Acrustox) in Cerrado. The experiment was conducted in the Experimental area of the Teaching and Research Farm, of the Engineering college of Ilha Solteira (UNESP), located in the city of Selvíria-MS, situated in the conditions of the Brazilian Cerrado. The soil samples were collected at depths of 0.00-0.10; 0.10-0.20; 0.20-0.30 and 0.30-0.40 m in three areas cultivated for 30 years: area (1) Pine forest (Pinus caribaea var. hondurensis); (2) Eucalyptus forest (Eucalyptus camaldulensis); (3) Reforested ciliary forest, being used a completely randomized design, with 25 replications and 3 treatments. The analyzed attributes of the soil was: macroporosity (Ma), microporosity (Mi), total porosity (TP), bulk density (BD), real particle (RP), soil resistance to penetration (PR), gravimetric moisture (GM), volumetric moisture (VM) and sand, silt and clay contents. The three evaluated areas presented macroporosity below the critical limit (0.100 m³ m-³), thereby impairing the root development. The three evaluated areas affected the physical quality of the soil. Being the physical attributes that most influenced in the reduction of the soil physical quality was the bulk density, total porosity, microporosity, macroporosity and soil resistance to penetration.

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