Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

A new model to simulate forest growth

14.11.2007
The Algorithm Engineering Group at the UPM’s School of Computing has developed, in conjunction with a forestry engineer from the University of Córdoba, a simulator modelling the evolution of a forest. This tool, called Vorest, is a forestry engineering research aid and an excellent example of how to apply computational geometry to real-world problems.

Tree development within a forest largely depends on how much space they have both on the ground and in the air, around the treetops. Trees compete to dominate the space they need to develop, and this relates these biological systems directly to Voronoi diagrams. A Voronoi diagram can be seen as the space partition as a result of expanding the sites in the diagram.

Vorest users can examine what impact the space the trees take up has on the development of a forest. This includes the space transfer dynamics between neighbouring trees dictated by their life strategies, and the outcome in terms of tree growth and mortality. Vorest’s simulation process is based on the fact that any tree is surrounded by an influence region of variable size that determines the future growth of the individual tree.

User flexibility

Vorest automatically calculates the influence regions, but offers users a wide range of options for deciding how growth should be simulated depending on this region. The application outputs two key classes of visual information.

First, Vorest represents the Voronoi diagram modelling the influence regions of each of the trees loaded in the program at any point of their growth. Second, it generates a more or less detailed representation of what the trees could really be expected to look like in their natural environment. The application then is able to generate a detailed 3D scene of what the forest really looks like.

Users will be able to manipulate this scene using textures to improve soil appearance or even by configuring the SkyBox representation. This produces a basic, but effective 3D background effect. The application has a straightforward and easy-to-use interface, and users have no need of computing expertise to operate the system.

The model was developed by Manuel Abellanas and Carlos Vilas from the Department of Applied Mathematics at the Universidad Politécnica de Madrid’s School of Computing and by Begoña Abellanas from the Department of Forestry Engineering at the Universidad de Córdoba. They were advised by Professor Oscar García from Canada’s Northern British Columbia University, who was a visiting professor at the Department of Applied Mathematics this year.

Useful models

Forest simulation models or forest growth models are very useful for forest managers and forestry researchers in many respects. A forest growth model aims to describe the dynamics of the forest closely and precisely enough to meet the needs of the forester or forestry researcher.

Dynamics includes all the change processes throughout the forest’s or tree’s lifetime. The primary changes in the forestry field are related to the incorporation, growth and death of trees, a forest’s key asset. There are many forest growth models. Vorest models the individual tree.

The most common uses of these models for managers are to forecast timber production or, less often, other forestry products (cones, cork, etc.) and to simulate different forestry management alternatives with a view to decision making. The models help to forecast what long-term effects a forestry management intervention is likely to have on both timber production and the future conditions of the actual forest, as well as the impact of interventions on other forest values.

For forestry researchers, models are most useful as tools for researching forest dynamics. A forest growth model like Vorest describes the dynamics of the forest closely and precisely enough to meet the needs of forestry managers or forestry researchers.

Eduardo Martínez | alfa
Further information:
http://www.fi.upm.es/?pagina=536

More articles from Information Technology:

nachricht Construction of practical quantum computers radically simplified
05.12.2016 | University of Sussex

nachricht UT professor develops algorithm to improve online mapping of disaster areas
29.11.2016 | University of Tennessee at Knoxville

All articles from Information Technology >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Significantly more productivity in USP lasers

In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.

Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...

Im Focus: Shape matters when light meets atom

Mapping the interaction of a single atom with a single photon may inform design of quantum devices

Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...

Im Focus: Novel silicon etching technique crafts 3-D gradient refractive index micro-optics

A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.

Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...

Im Focus: Quantum Particles Form Droplets

In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.

“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...

Im Focus: MADMAX: Max Planck Institute for Physics takes up axion research

The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.

The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ICTM Conference 2017: Production technology for turbomachine manufacturing of the future

16.11.2016 | Event News

Innovation Day Laser Technology – Laser Additive Manufacturing

01.11.2016 | Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

 
Latest News

NTU scientists build new ultrasound device using 3-D printing technology

07.12.2016 | Health and Medicine

The balancing act: An enzyme that links endocytosis to membrane recycling

07.12.2016 | Life Sciences

How to turn white fat brown

07.12.2016 | Health and Medicine

VideoLinks
B2B-VideoLinks
More VideoLinks >>>