1:45 PM - 3:15 PM
[MIS01-P18] Influence of tree age and disturbance history on tree climate sensitivity in Korean Pine forests
Keywords:tree ring, disturbance event, climate sensitivity, Korean pine, Russian Far East
More than 20% of the world's forests are concentrated in Russia. One of the most valuable types of forest ecosystems in our country is the undisturbed coniferous-broadleaved forests of the Far East. These ecosystems are characterized by a high biodiversity, sustainable development, a variety of forms of structural and functional organization and scenarios of natural dynamics. Russian Far East is located in the monsoon circulation zone. During the summer monsoon, forest ecosystems are influenced by tropical cyclones, characterized by strong wind gusts and large amounts of rainfall. According to a number of studies, the observed intensification of typhoon activity in recent decades, is due to climatogenic causes and has a strong impact on mixed conifer forests.
Along with the large-scale influence of climatic factors, disturbances may lead to changes in local tree climatic sensitivity due to changes in competition, light conditions, redistribution of soil moisture microelements, etc. Despite the development of research on disturbance regimes in mixed coniferous forests of East Asia in the last decade, to date there are only sporadic papers on the relationship between tree annual ring widths and climatic factors in Russia. However, at present, it is not clear how ecosystem disturbances resulting from the death of individual trees affect the climatic sensitivity of nearby growing trees.
In our study we analyzed how the history of local disturbances under different conditions affects the climate sensitivity of conifers of the Russian Far East. We used the individual-oriented approach via standard dendroecological and dendroclimatological methods to analyze the full spectrum of tree ring responses to climate. According our data it is more objectively reflects the sensitivity of forest ecosystems compared to analyzing most sensitive trees.
Study was supported by Russian Science Foundation project No. 23-24-00511, https://rscf.ru/project/23-24-00511/
Along with the large-scale influence of climatic factors, disturbances may lead to changes in local tree climatic sensitivity due to changes in competition, light conditions, redistribution of soil moisture microelements, etc. Despite the development of research on disturbance regimes in mixed coniferous forests of East Asia in the last decade, to date there are only sporadic papers on the relationship between tree annual ring widths and climatic factors in Russia. However, at present, it is not clear how ecosystem disturbances resulting from the death of individual trees affect the climatic sensitivity of nearby growing trees.
In our study we analyzed how the history of local disturbances under different conditions affects the climate sensitivity of conifers of the Russian Far East. We used the individual-oriented approach via standard dendroecological and dendroclimatological methods to analyze the full spectrum of tree ring responses to climate. According our data it is more objectively reflects the sensitivity of forest ecosystems compared to analyzing most sensitive trees.
Study was supported by Russian Science Foundation project No. 23-24-00511, https://rscf.ru/project/23-24-00511/