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 Controlling robots with brainwaves and hand gestures
20.06.2018 | Massachusetts Institute of Technology, CSAIL

nachricht Innovative autonomous system for identifying schools of fish
20.06.2018 | IMDEA Networks Institute

All articles from Information Technology >>>

The most recent press releases about innovation >>>

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

Im Focus: Temperature-controlled fiber-optic light source with liquid core

In a recent publication in the renowned journal Optica, scientists of Leibniz-Institute of Photonic Technology (Leibniz IPHT) in Jena showed that they can accurately control the optical properties of liquid-core fiber lasers and therefore their spectral band width by temperature and pressure tuning.

Already last year, the researchers provided experimental proof of a new dynamic of hybrid solitons– temporally and spectrally stationary light waves resulting...

Im Focus: Overdosing on Calcium

Nano crystals impact stem cell fate during bone formation

Scientists from the University of Freiburg and the University of Basel identified a master regulator for bone regeneration. Prasad Shastri, Professor of...

Im Focus: AchemAsia 2019 will take place in Shanghai

Moving into its fourth decade, AchemAsia is setting out for new horizons: The International Expo and Innovation Forum for Sustainable Chemical Production will take place from 21-23 May 2019 in Shanghai, China. With an updated event profile, the eleventh edition focusses on topics that are especially relevant for the Chinese process industry, putting a strong emphasis on sustainability and innovation.

Founded in 1989 as a spin-off of ACHEMA to cater to the needs of China’s then developing industry, AchemAsia has since grown into a platform where the latest...

Im Focus: First real-time test of Li-Fi utilization for the industrial Internet of Things

The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.

Modern production technologies in the automobile industry must become more flexible in order to fulfil individual customer requirements.

Im Focus: Sharp images with flexible fibers

An international team of scientists has discovered a new way to transfer image information through multimodal fibers with almost no distortion - even if the fiber is bent. The results of the study, to which scientist from the Leibniz-Institute of Photonic Technology Jena (Leibniz IPHT) contributed, were published on 6thJune in the highly-cited journal Physical Review Letters.

Endoscopes allow doctors to see into a patient’s body like through a keyhole. Typically, the images are transmitted via a bundle of several hundreds of optical...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Munich conference on asteroid detection, tracking and defense

13.06.2018 | Event News

2nd International Baltic Earth Conference in Denmark: “The Baltic Sea region in Transition”

08.06.2018 | Event News

ISEKI_Food 2018: Conference with Holistic View of Food Production

05.06.2018 | Event News

 
Latest News

Graphene assembled film shows higher thermal conductivity than graphite film

22.06.2018 | Materials Sciences

Fast rising bedrock below West Antarctica reveals an extremely fluid Earth mantle

22.06.2018 | Earth Sciences

Zebrafish's near 360 degree UV-vision knocks stripes off Google Street View

22.06.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>