森林成長モデル関連のセミナー

日時

2011年2月1日(火) 14:00-16:00

場所

統計数理研究所 セミナー室5 (3階D313)

Title

Cork oak woodlands monitoring system:
A knowledge based growth modeling approach for complex forest systems

Speaker

Dr. Nuno Ribeiro

Abstract

Cork oak (Quercus suber L.) woodlands (montado) consist of a multifunctional forest system that covers about 713000 ha in Portugal.
Today, its importance stems from cork production, with Portugal producing half of the cork in the world. As the main economic objectives may change with changes in markets and environment conservation concerns (e.g. biodiversity, water, carbon) there is a need for improved management tools. Spatial individual tree growth simulators are tools that enable the generation of tree growth scenarios dependent on site and competition status, that allow to simulate large scope management actions. It is intended to present the cork oak woodland production system and discuss the challenges created by the new ecosystem adaptive management approaches. It is presented the cork oak tree spatial growth simulator, CORKFITS that was constructed with data generated by the monitoring system installed in 1995. The simulator was built assuming the potential increment modifier principle: z=zpot*modifier +e, where zpot is the potential growth as function of site; modifier is the reduction factor as function of spatial competition index and the intensity of debark; e is a random error. CORKFITS is composed by sub growth models (cork, stem, tree height and crown), cork production models and mortality models. Finally it is presented the ecological based decision support system (ECCORK) for aid in management decisions for cork oak stands supported in the concept of ecosystem adaptive management approaches.

Title

Examples of Applied Informatics in Forest Management and Modeling.

Speaker

Dr. Peter Surový

Abstract

The complexity of the growth and production models in forestry makes indispensable the use of computational power and so incorporate knowledge from computer science and research. In this presentation I would like to show the possibility of linking the advances in computer research into mathematical modeling and subsequently into forest management and decision making processes. It will be shown progress of our group in the development of simulator software for growth and production of cork oak woodland - montados.
Desktop version, web server version and possibilities of incorporation of this simulator into other software by means of SOAP protocol via web services will be shown. In second part of the presentation it will be explained a method for acquisition of 3dimensional data by magnetic digitizer and the option for structural model development with respect towards forestry management. Some basic examples of three-dimensional modeling through Functional-Structural Model Plant modeling environment (GroIMP) will be shown. At the end I would like to show few works from image analysis topic, the current ongoing projects in our group, some algorithms developed and practical case studies.