Modeling of progressive-age dynamics of the mountain-taiga forest in - - PowerPoint PPT Presentation

Modeling of progressive-age dynamics of the mountain-taiga forest in Pribaikalye and maps of forest management optimization.

Myasnikova Svetlana Ivanovna V.B. Sochava Institute of Geography SB RAS, (Irkutsk, Russia, tyara@irigs.irk.ru) Мясникова Светлана Ивановна Институт географии им. В.Б. Сочавы СО РАН (г. Иркутск)

Моделирование восстановительно-возрастной динамики горно-таежных лесов Прибайкалья и карты оптимизации лесопользования.

Problem:

• ptimal management of mountain-taiga forest reserves in

the area of the Khamar-Daban Range Goal:

• ptimization of forest reserves for different stages of

succession, different groups of forest types, and different bonitets Task: studying mechanisms of optimal behavior of ecosystem in local conditions using modeling interaction of different groups of species in the process of progressive-age succession based on the system analysis

Scheme of procedures of the system analysis for geoinformation modeling and mapping of mechanisms of interaction of ecosystems

Formulation of a problem, goals and tasks The information image of a territory Investigation of inner structure and determination of input parameters which are base for model building Selection of a model which provides the best solving

• f set problem and building of its algorithms

Calculation of the model coefficients taking into account given criteria of optimization Verification of stability of the model and including additional limitations Visualization of the results of modeling using methods

• f geoinformation mapping

The information image of the studied territory is generated as a GIS-project containing the database of forest characteristics for each forest unit (“videl”)

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Small-leaved species

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Light-coniferous species

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Dark-coniferous species

The following information was taken from the GIS database:

• The age class of the main forest-forming species
• The species composition of forest stands
• The total reserves of a forest management unit
• The area of a forest management unit
• The type of forest

Were identified three mutually interacting elements of forest:

In their interaction these groups of species are responsible for the emergence of progressive-age succession in cutting-spots and fire- sites.

The optimality criterion is the maximum of the forest reserves within the given period The optimization problem is solved using the Pontryagin’s maximum principle.

As a result, the progressive-age dynamics of mountain-taiga forest is analysed, the results of the analysis of the data, containing in GIS and calculated as a result of modeling are compared and the maps were generated for the directions and intensity of management of forest stands in terms of landscape planning.

Thank you for your attention!