Abstract
Siberian silk moth is one of the most dangerous pests of coniferous forests of Krasnoyarsk region, which are the most important natural resource of the region. Climate change is considered to be one of the essential criteria for the growth of the silk moth population. In 2014, there was another outbreak of the number of silk moth in the Yenisei district of Krasnoyarsk region. It is known that the forest area of the Yenisei river left bank is subject to severe damage by the silk moth, and the right bank is characterized by a weak forest damage. The task of this work is to analyze the situation with the heterogeneous lesion of the forest by the Siberian silkworm on both banks of the Yenisei river of the territory under consideration according to most detailed available meteorological data for the period from 2009 to 2018. The results of the study showed that the left bank of the river has an increased surface temperature compared to the right bank by an average of 1-1.5°C during the period under review. This effect may be the reason for the spatial distribution of the Siberian silk moth population.
Highlights
Siberian silk moth is one of the most dangerous pests of coniferous forests of Siberia and the Far East, which are one of the most important natural resources of the country
It is known that the forest area of the Yenisei river left bank is subject to severe damage by the silk moth, and the right bank is characterized by a weak forest damage
The results of the study showed that the left bank of the river has an increased surface temperature compared to the right bank by an average of 1-1.5°C during the period under review
Summary
Siberian silk moth is one of the most dangerous pests of coniferous forests of Siberia and the Far East, which are one of the most important natural resources of the country. This type of insect feeds on fir, Siberian cedar, spruce and larch. Several regions of moth outbreaks are highlighted in Krasnoyarsk Territory: Chulymo-Keski, Priamurskiy, Prieniseiskoi, West Sayan, KanskBiryusinskaya, Kuznetsk-Alatauskiy, Osinusi, Sibson-Tubinskiy, Mana-Agul. The greatest intensity of the different outbreaks of the moth in dark-coniferous forests of the Central part of the Krasnoyarsk territory: Chulymo-Ket, Priamurskiy and Prieniseiskoi areas. The boundary of the focal distribution of the silkworm is the temperature criterion – the average long-term temperature of August, which is +13.5°C [3]
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