[M-IS01] ENVIRONMENTAL, SOCIO-ECONOMIC, AND CLIMATIC CHANGES IN NORTHERN EURASIA

[MIS01-P06] VS-Cambium-Developer: A New Web Application For Cambium Development Predictive Modeling

*Daria Belousova¹, Margarita Popkova¹, Victor Iljin¹, Vladimir Shishov¹ (1.SibFU)

Keywords:cambial activity, cell differentiation, Vaganov-Shashkin model, climatic factors, Larix sibirica

The stem biomass of the woody plants is one of the key pool of carbon stock in terrestrial ecosystems. We analyze a growth of lateral meristems of conifer species, particularly a seasonal tree-ring formation under the climate forcing which can be defined by cambial cell functioning. There are two principal factors affected on cambial cells: internal biochemical processes and environmental factors. Tree-rings process-based models are precise tool for analyzing these relationships. We have implemented a new version of the VS-Cambium-Developer submodel (VS-CD) of the process-based tree-ring VS-model as a web application (http://vs-genn.ru/VSCD/). The VS-CD simulates a seasonal cell production and cambial kinetics through growth inhibitor concentration regulated by climatic conditions.
The algorithm can be easily adapted to the VS-GENN online platform (http://www.vs-genn.ru/). The developed widgets (process visualization tools) make it possible to track the cambial cell development with high-resolution accuracy less than one day.
The VSCD simulated results over 1963-2011 was verified by long-term direct observations of seasonal cell production of Larix Sibirica trees growing in Southern Siberia (Khakassia republic, Russia). It was shown that climatic conditions explain more than 55% of the variation in cell production.
This work was supported by Russian Science Foundation (Grant 22-14-00048) and the Ministry of Science and Higher Education of the Russian Federation (FSRZ-2023-0007).