THE ESTIMATION OF PERTURBANCE FACTORS INFLUENCE ON VEGETATION IN THE REPUBLIC TYVA TERRITORY : доклад, тезисы доклада

Описание

Тип публикации: доклад, тезисы доклада, статья из сборника материалов конференций

Конференция: 11th International Multidisciplinary Scientific Geoconference SGEM 2011; Albena, Bulgaria; Albena, Bulgaria

Год издания: 2011

Идентификатор DOI: 10.5593/sgem2011/s15.102

Ключевые слова: siberia, taiga, mountain forest, forest fires, Burned area, on-ground data and satellite monitoring

Аннотация: Region forests grow on northern macroslopes of ridges from bottom to high- mountainous tundra. The forest plays important role in region ecology and in the Siberia territory as a whole. The influence of vegetation fires is the most important factor of reduction of boreal region forests. Fire activity is rising basically because of Показать полностьюthe human influence. During 35 years (1959-1994) about 33594.8 ha destroyed by wildfires. In 1995-2005 about 546088.6, ha had been destroyed by wildfires. During the period of 1999-2008 116 fires was registered on the area of 376313 ha in territory of Tyva. Fires as the phenomena exist thanks to variation of weather from climatic norms. Especially long drought periods are critically important in process of wildfire activity formation. Ligtning of dry thunder-storms are the major natural cause of forest fire occurrence. Thunder-storms are cause of 20-30 % of total fires. Increasing of quantity of fire number that caused by dry thunder-storms, probably, is the result of global factor as climate warming.The increasing of spring and summer temperatures is observed in southern part of Region (meteorological station Chadaana) according to the Hydrometeorological Center of Republic Tyva data. Average warming in during 1979-2000 years in April was 1.6º C, and in summer - 2ºC. Increase of average temperatures in summer and in spring months and humidity increasing are the most important factors which should lead to expansion of borders of dark coniferous forest altitude zone complex, especially to expansion of an area of a cedar at the bottom and top borders of its growth. Essential changes of forest was exposed on northern macroslopes within 1500-2000 m a.s.l., there they almost are completely covered by lichen.Geoinformation technologies are the tool of the analysis, estimation and monitoring of boreal forests in Region. The regional geoinformation system is produced in collaboration with V.N. Sukachev Institute of Forest SB RAS (Krasnoyarsk) to complex analysis of the factors determine fire-dangerous condition of forests depending on ecological, anthropogenic and weather factors. Databases of monitoring of various levels (on-ground and satellite) will the base of uniform architecture of information layers for fire-prevention monitoring.

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Издание

Журнал: 11th International Multidisciplinary Scientific Geoconference SGEM 2011

Выпуск журнала: 2

Номера страниц: 1029-1034

Место издания: Sofia

Издатель: Общество с ограниченной ответственностью СТЕФ92 Технолоджи

Авторы

  • Kuular Khulermaa (Tuvinian institute for the exploration of natural resources RAS SB)
  • Ponomarev Evgenij (V.N. Sukachev Institute of Forest SB RAS)
  • Kotelnikov Valerij (Tuvinian institute for the exploration of natural resources RAS SB)

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