STRONG WINDS AND WINDTHROWS IN THE FORESTS OF THE UKRAINIAN CARPATHIANS
Using data from 16 meteorological stations, the frequency and intensity of strong winds (³20 m/s) in the Ukrainian Carpathians have been analysed. 6,633 events of strong wind were recorded in this region, 60 per cent of them at the mountain meteostations Pozhezhevs'ka and Plaj. The number of st...
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Ukrainian National Forestry University
2017-11-01
|
| Series: | Науковий вісник НЛТУ України |
| Subjects: | |
| Online Access: | https://nv.nltu.edu.ua/index.php/journal/article/view/1225 |
| _version_ | 1817977483437277184 |
|---|---|
| author | V. V. Lavnyy |
| author_facet | V. V. Lavnyy |
| author_sort | V. V. Lavnyy |
| collection | DOAJ |
| description | Using data from 16 meteorological stations, the frequency and intensity of strong winds (³20 m/s) in the Ukrainian Carpathians have been analysed. 6,633 events of strong wind were recorded in this region, 60 per cent of them at the mountain meteostations Pozhezhevs'ka and Plaj. The number of strong winds at each station varied greatly from one year to another. In 1996 an annual maximum of 52 strong winds at one station (Pozhyzhevs'ka mountain) was recorded. In general, frequency of the strong winds fluctuated and showed cyclical character. 60 per cent of the strong winds occurred between October and March. 55 percent of the analysed strong winds showed maximum wind speeds between 20.0 and 24.9 m/s. There were a total of 413 strong wind events (6.2 %) with the wind speeds of 40 m/s or more. Winter storms usually lasted longer than summer storms. Analysed was the literature regarding the factors affecting the extent of windthrows. Also, investigated was the influence of the stands composition, their age, average height, average diameter, site class and stand density on the volume of windthrows in the Ukrainian Carpathians. In general, the windthrows in the region under investigation have been only of local character. The volume of the windthrow timber made up on the average 238 m3 per ha. The amount of windthrows changes considerably from year to year. The most frequent forest winthrows were observed in spruce stands. This species made up 72 per cent of the total volume of the fallen trees. The share of silver fir made up 13 per cent of the fallen timber while the share of beech amounted to 12 per cent. Other species made up only 3 per cent of the fallen trees. The windthrows damaged largely the middle-density stands aged 71 to 90 years with the average height ranging from 26 to 30 m. The ways and methods of mitigating the wind-induced damage to forest of the Ukrainian Carpathians are indicated. |
| first_indexed | 2024-04-13T22:17:03Z |
| format | Article |
| id | doaj.art-0444acdbc0aa41ed909525edc7e62f10 |
| institution | Directory Open Access Journal |
| issn | 1994-7836 2519-2477 |
| language | English |
| last_indexed | 2024-04-13T22:17:03Z |
| publishDate | 2017-11-01 |
| publisher | Ukrainian National Forestry University |
| record_format | Article |
| series | Науковий вісник НЛТУ України |
| spelling | doaj.art-0444acdbc0aa41ed909525edc7e62f102022-12-22T02:27:27ZengUkrainian National Forestry UniversityНауковий вісник НЛТУ України1994-78362519-24772017-11-01278768110.15421/402708111225STRONG WINDS AND WINDTHROWS IN THE FORESTS OF THE UKRAINIAN CARPATHIANSV. V. Lavnyy0Ukrainian National Forestry University, LvivUsing data from 16 meteorological stations, the frequency and intensity of strong winds (³20 m/s) in the Ukrainian Carpathians have been analysed. 6,633 events of strong wind were recorded in this region, 60 per cent of them at the mountain meteostations Pozhezhevs'ka and Plaj. The number of strong winds at each station varied greatly from one year to another. In 1996 an annual maximum of 52 strong winds at one station (Pozhyzhevs'ka mountain) was recorded. In general, frequency of the strong winds fluctuated and showed cyclical character. 60 per cent of the strong winds occurred between October and March. 55 percent of the analysed strong winds showed maximum wind speeds between 20.0 and 24.9 m/s. There were a total of 413 strong wind events (6.2 %) with the wind speeds of 40 m/s or more. Winter storms usually lasted longer than summer storms. Analysed was the literature regarding the factors affecting the extent of windthrows. Also, investigated was the influence of the stands composition, their age, average height, average diameter, site class and stand density on the volume of windthrows in the Ukrainian Carpathians. In general, the windthrows in the region under investigation have been only of local character. The volume of the windthrow timber made up on the average 238 m3 per ha. The amount of windthrows changes considerably from year to year. The most frequent forest winthrows were observed in spruce stands. This species made up 72 per cent of the total volume of the fallen trees. The share of silver fir made up 13 per cent of the fallen timber while the share of beech amounted to 12 per cent. Other species made up only 3 per cent of the fallen trees. The windthrows damaged largely the middle-density stands aged 71 to 90 years with the average height ranging from 26 to 30 m. The ways and methods of mitigating the wind-induced damage to forest of the Ukrainian Carpathians are indicated.https://nv.nltu.edu.ua/index.php/journal/article/view/1225forest damageukrainian carpathiansstrong windswindthrowsforestry |
| spellingShingle | V. V. Lavnyy STRONG WINDS AND WINDTHROWS IN THE FORESTS OF THE UKRAINIAN CARPATHIANS Науковий вісник НЛТУ України forest damage ukrainian carpathians strong winds windthrows forestry |
| title | STRONG WINDS AND WINDTHROWS IN THE FORESTS OF THE UKRAINIAN CARPATHIANS |
| title_full | STRONG WINDS AND WINDTHROWS IN THE FORESTS OF THE UKRAINIAN CARPATHIANS |
| title_fullStr | STRONG WINDS AND WINDTHROWS IN THE FORESTS OF THE UKRAINIAN CARPATHIANS |
| title_full_unstemmed | STRONG WINDS AND WINDTHROWS IN THE FORESTS OF THE UKRAINIAN CARPATHIANS |
| title_short | STRONG WINDS AND WINDTHROWS IN THE FORESTS OF THE UKRAINIAN CARPATHIANS |
| title_sort | strong winds and windthrows in the forests of the ukrainian carpathians |
| topic | forest damage ukrainian carpathians strong winds windthrows forestry |
| url | https://nv.nltu.edu.ua/index.php/journal/article/view/1225 |
| work_keys_str_mv | AT vvlavnyy strongwindsandwindthrowsintheforestsoftheukrainiancarpathians |