Abstract
Aim of study: To develop and evaluate the forest’s wind-risk model, dedicated for stand damage level.Area of study: Model was tested in the northeastern Poland.Material and methods: A risk model referring to the damage of forest stands by wind specifies, for every stand in a selected forest district, the risk factor within the range of 0 to 3. The higher value of the factor, the greater risk of damage, if wind occurs. The model was based on 11 features: average size of a tree stand, mean diameter breast high in the specified features’ ratio, species composition, degree of stand density, age of stand, forest site type, amount of damage caused by wind in the last 10-year period, location of forest district in the region of Poland, and three features for mountains: stand’s altitude above sea level, direction, and slope. The model used information from the State Forests’ Information System database (SILP), and since it was developed in JAVA computer language, the processing of data for one forest district lasted less than one minute.Main results: The model can create a forest district digital map, in which stands characterized by specific risk values are presented with high prediction accuracy.Research highlights: The risk model of tree stand damage by winds uses data provided by the SILP and what was proven in below study, can be used as an effective tool in a forestry practice.
Highlights
In the current 21st century, many extreme weather events have been noted, which resulted in extensive damage throughout the forests of Poland
In November 2004, Hurricane “Pio” damaged the tree stands of the Regional Directorates of State Forests in Katowice and Kraków
The year 2007 was characterized by extensive damage to forests, caused by one of the greatest intercontinental hurricanes, “Kyrill.” Damage mostly occurred in the southwest to tree stands in the Regional Directorates of State Forests in Wrocław, Katowice, and Kraków, as well as forest districts located in the south of Directorate in Zielona Góra and Poznań (Filipek, 2008; Grabowski, 2008)
Summary
In the current 21st century, many extreme weather events have been noted, which resulted in extensive damage throughout the forests of Poland. In November 2004, Hurricane “Pio” damaged the tree stands of the Regional Directorates of State Forests in Katowice and Kraków. The year 2007 was characterized by extensive damage to forests, caused by one of the greatest intercontinental hurricanes, “Kyrill.” Damage mostly occurred in the southwest to tree stands in the Regional Directorates of State Forests in Wrocław, Katowice, and Kraków, as well as forest districts located in the south of Directorate in Zielona Góra and Poznań (Filipek, 2008; Grabowski, 2008). In 2009, severe damage was caused by a hurricane to the forests of the Directorate of State Forests in Wrocław and Arkadiusz Bruchwald, Elżbieta Dmyterko and Radomir Balazy
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