scholarly journals EucaTool®, a cloud computing application for estimating the growth and production of Eucalyptus globulus Labill. plantations in Galicia (NW Spain)

2015 ◽  
Vol 24 (3) ◽  
pp. eRC06 ◽  
Author(s):  
Alberto Rojo-Alboreca ◽  
Juan D. García-Villabrille ◽  
Fernando Pérez-Rodríguez
Keyword(s):  
Cloud Computing ◽  
Carbon Content ◽  
Eucalyptus Globulus ◽  
Basal Area ◽  
Production Model ◽  
Nw Spain ◽  
Transition Functions ◽  
Dominant Height ◽  
Future Production ◽  
Blue Gum

<p><em>Aim of study</em>: To present the software utilities and explain how to use EucaTool<sup>®</sup>, a free cloud computing application developed to estimate the growth and production of seedling and clonal blue gum (<em>Eucalyptus globulus</em> Labill.) plantations in Galicia (NW Spain).</p><p><em>Area of study</em>: Galicia (NW Spain).</p><p><em>Material and methods</em>: EucaTool<sup>®</sup> implements a dynamic growth and production model that is valid for clonal and non-clonal blue gum plantations in the region. The model integrates transition functions for dominant height (site index curves), number of stems per hectare (mortality function) and basal area, as well as output functions for tree and stand volume, biomass and carbon content.</p><p><em>Main results</em>: EucaTool<sup>®</sup> can be freely accessed from any device with an Internet connection, from <a href="http://app.eucatool.com/"><span style="color: #0000ff;">http://app.eucatool.com</span></a>. In addition, useful information about the application is published on a related website: <a href="http://www.eucatool.com/"><span style="color: #0000ff;">http://www.eucatool.com</span></a>.</p><p><em>Research highlights</em>: The application has been designed to enable forest stakeholders to estimate volume, biomass and carbon content of forest plantations from individual trees, diameter classes or stand data, as well as to estimate growth and future production (indicating the optimal rotation age for maximum income) by measurement of only four stand variables: age, number of trees per hectare, dominant height and basal area.</p><p><strong>Keywords: </strong>forest management; biomass; seedling; clones; blue gum; forest tool.</p>

scholarly journals FlorNExT®, a cloud computing application to estimate growth and yield of maritime pine (Pinus pinaster Ait.) stands in Northeastern Portugal

2016 ◽  
Vol 25 (2) ◽  
pp. eRC08 ◽  
Author(s):  
Fernando Pérez-Rodríguez ◽  
Luis Nunes ◽  
Ângelo Sil ◽  
João Azevedo
Keyword(s):  
Cloud Computing ◽  
Pinus Pinaster ◽  
Basal Area ◽  
Site Index ◽  
Maritime Pine ◽  
Growth And Yield ◽  
Forest Modelling ◽  
Transition Functions ◽  
Dominant Height ◽  
Pinus Pinaster Ait

Aim of the study: To introduce and describe FlorNExT®, a free cloud computing application to estimate growth and yield of maritime pine (Pinus pinaster Ait.) even-aged stands in the Northeast of Portugal (NE Portugal).Area of study: NE Portugal.Material and methods: FlorNExT® implements a dynamic growth and yield modelling framework which integrates transition functions for dominant height (site index curves) and basal area, as well as output functions for tree and stand volume, biomass, and carbon content.Main results: FlorNExT® is freely available from any device with an Internet connection at: http://flornext.esa.ipb.pt/.Research highlights: This application has been designed to make it possible for any stakeholder to easily estimate standing volume, biomass, and carbon content in maritime pine stands from stand data, as well as to estimate growth and yield based on four stand variables: age, density, dominant height, and basal area. FlorNExT® allows planning thinning treatments. FlorNExT® is a fundamental tool to support forest mobilization at local and regional scales in NE Portugal.Keywords: forest management; maritime pine; forest modelling; knowledge transfer tool.

scholarly journals Biomass and carbon content in Galicia (NW Spain) Eucalyptus globulus Labill. stands

1970 ◽  
Author(s):  
Juan Daniel García-Villabrille ◽  
Felipe Crecente-Campo ◽  
Ulises Diéguez-Aranda ◽  
Alberto Rojo-Alboreca ◽  
César Pérez-Cruzado ◽  
...  
Keyword(s):  
Carbon Content ◽  
Aboveground Biomass ◽  
Eucalyptus Globulus ◽  
Nw Spain ◽  
Important Species ◽  
Independent Variables ◽  
Forest Inventories ◽  
Northwestern Spain ◽  
National Forest Inventories ◽  
Using Data

Northwestern Spain is one of the most productive forest areas in Europe, being Eucalyptus globulus Labill. the most important species in the area. Stands (pure and mixed) of the species cover more than 400,000 ha, and almost four million cubic metres of timber were produced annually between 2008 and 2012. In this paper we present estimations of total aboveground biomass and the corresponding carbon content in Eucalyptus globulus plantations in Galicia, as useful information for further analysis on carbon sequestration balance. We developed several easy-to-use biomass equations, using data collected from cut trees across Galicia, and these were applied to data from the Third (1997) and Fourth (2011) National Forest Inventories in the region. The fitted model with diameter and height as independent variables showed the best estimates (R2 Adj = 0.9965, RMSE = 6.28). Estimations of current (2011) total aboveground biomass was 34.8 Mt and for the carbon was 15.7 Mt.

scholarly journals Determinação da produção de madeira Acácia negra, Acacia Mearnsii de Wild

1989 ◽  
Vol 11 (11) ◽  
pp. 101
Author(s):  
Paulo Renato Schneider ◽  
Gerard Oesten
Keyword(s):  
Basal Area ◽  
Production Model ◽  
Generic Model ◽  
Acacia Mearnsii ◽  
Independent Variables ◽  
Yield Variation ◽  
Dominant Height ◽  
Statistical Precision ◽  
Black Wattle

The present research was undertaken with black wattle, Acacia mearnsii De Wild. The objective was to determine wood yield with shell and without, bark estimated through an equation obtained by a production model, related to age, dominant height and basal area, expressed by the generic model: log V = b0 + bl.h02 + b2.LogG, were V was volume/hectare; G basal area per hectare; h0 the dominant height. This equation showed a high statistical precision. The independent variables, dominant height and basal area exolicated 97,8 and 85,2% of the yield variation with and without bar, respectively.

scholarly journals A Dynamic Stand Growth Model System for Loblolly Pine Responding to Mid-Rotation Treatments

Forests ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 556
Author(s):  
Mauricio Zapata-Cuartas ◽  
Bronson P. Bullock ◽  
Cristian R. Montes ◽  
Michael B. Kane
Keyword(s):  
Growth Model ◽  
Loblolly Pine ◽  
Basal Area ◽  
Model System ◽  
Growth And Yield ◽  
Site Quality ◽  
Response To Treatment ◽  
Plantation Management ◽  
Vegetation Control ◽  
Dominant Height

Intensive loblolly pine (Pinus taeda L.) plantation management in the southeastern United States includes mid-rotation silvicultural practices (MRSP) like thinning, fertilization, competitive vegetation control, and their combinations. Consistent and well-designed long-term studies considering interactions of MRSP are required to produce accurate projections and evaluate management decisions. Here we use longitudinal data from the regional Mid-Rotation Treatment study established by the Plantation Management Research Cooperative (PMRC) at the University of Georgia across the southeast U.S. to fit and validate a new dynamic model system rooted in theoretical and biological principles. A Weibull pdf was used as a modifier function coupled with the basal area growth model. The growth model system and error projection functions were estimated simultaneously. The new formulation results in a compatible and consistent growth and yield system and provides temporal responses to treatment. The results indicated that the model projections reproduce the observed behavior of stand characteristics. The model has high predictive accuracy (the cross-validation variance explained was 96.2%, 99.7%, and 98.6%; and the prediction root mean square distance was 0.704 m, 19.1 trees ha−1, and 1.03 m2ha−1 for dominant height (DH), trees per hectare (N), and basal area (BA), respectively), and can be used to project the current stand attributes following combinations of MRSP and with different thinning intensities. Simulations across southern physiographic regions allow us to conclude that the most overall ranking of MRSP after thinning is fertilization + competitive vegetation control (Fert + CVC) > fertilization only (Fert) > competitive vegetation control only (CVC), and Fert + CVC show less than additive effect. Because of the model structure, the response to treatment changes with location, age of application, and dominant height growth as indicators of site quality. Therefore, the proposed model adequately represents regional growth conditions.

Modelling fine fuel moisture content and the likelihood of fire spread in blue gum (Eucalyptus globulus) litter

2014 ◽  
pp. 353-359
Author(s):  
Anita Pinto ◽  
Juncal Espinosa-Prieto ◽  
Carlos Rossa ◽  
Stuart Matthews ◽  
Carlos Loureiro ◽  
...  
Keyword(s):  
Moisture Content ◽  
Eucalyptus Globulus ◽  
Fire Spread ◽  
Fuel Moisture ◽  
Fuel Moisture Content ◽  
Blue Gum

scholarly journals Induction of Defensive Response in Eucalyptus globulus Plants and its Persistence in Vegetative Propagation

2013 ◽  
Vol 8 (3) ◽  
pp. 1934578X1300800 ◽  
Author(s):  
Christian Troncoso ◽  
Claudia Perez ◽  
Victor Hernandez ◽  
Manuel Sanchez-Olate ◽  
Darcy Rios ◽  
...  
Keyword(s):  
Vegetative Propagation ◽  
Eucalyptus Globulus ◽  
Mechanical Damage ◽  
Defense Responses ◽  
Caryophyllene Oxide ◽  
Defensive Compounds ◽  
Flame Ionization ◽  
Different Types ◽  
Induction Type ◽  
Blue Gum

The expression of defensive compounds derived from secondary metabolism in plants of Eucalyptus globulus Labill, and the persistence of these in vegetative propagation was evaluated by gas chromatography with flame ionization (GC-FID) and mass spectrometry (MS). The plants were induced by attack from the insect Ctenarytaina eucalypti (“blue gum psyllid”) and by mechanical damage. Defense responses were activated in plants for the different types of tested induction. We identified four defensive compounds present in the leaves of plants induced in entomological form (β-terpineol, aromadendrene, caryophyllene-oxide and eremophilene); all remained in the vegetative propagation. After mechanical induction, we identified three compounds (β-terpineol, aromadendrene and ledol), of which ledol and aromadendrene persisted in the vegetative propagation. Virtually all the compounds detected, in addition to persisting in the vegetative propagation, showed specificity for the induction type, whether entomological or mechanical, except for aromadendrene, which was expressed in both types of induction.

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