Перевод названия: High-precision laser-based instrumentation system as a tool for assessing impact of various factors on Scoths pine fire-resistance in Central Siberia
Тип публикации: доклад, тезисы доклада, статья из сборника материалов конференций
Конференция: Международная молодежная школа и конференция по вычислительно-информационным технологиям для наук об окружающей среде; Томск; Томск
Год издания: 2015
Аннотация: A laser-based field instrumentation system together with the other measurements (assessment of biomass stores, forest conditions, undergrowth, vegetation and soil descriptions etc.) provides us a comprehen- sive picture of spatial development of wildfires within the plots. This system permits estimating the re- lationships between Показать полностьюthe spatial parameters and intensity of burning and thus giving us an extent of fire damage of trees with the other related characteristics within the plot (i.e. location of undergrowth, slash, etc.). Moreover it permits assessing the impact of landscape characteristics and natural barriers on the spread of fire edge. Our observations have shown that surface location of root system leads to a strong decrease of Scotch pine fire-resistance. Field experiments have demonstrated that root collar of a tree is the most critical part for pyrogenic damage. Within the fast moving surface forest fires the portion of dead trees with surface location of root system was estimated around 42% and up to 91% of mortality achieved after a steady surface forest fire. The next factor that had influence on tree mortality is other individual morphometric factors: big-butt, slope, and curvature of a tree stem. Our observation have shown that the visible post-fire stem damages were deadly significant for Pinus sylvestris mature trees if fire scars achieved more than 2/3 of circumference (for damage of cambium layer). After such extent damages mortality of Scoths pine trees could achieve up to 89%. Even if a tree survives after fire it will probably be destroyed by next fire due to increased pitch flow, which decreases fire-resistance of the tree. These results confirm that for mature pine stands surface forest fires are practically as dangerous as crown fires.
Журнал: CITES-2015
Номера страниц: 115-119
Издатель: Томский центр научно-технической информации