1. Response Reaction of Scots Pine Pinus sylvestris L. After Forest Fire in Forest Site Type Vacciniosa turf. mel. in Klīve Forest District.
- Author
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Freimane, Lāsma, Miezīte, Olga, Ailts, Mārtiņš, Meiere, Nensija, and Luguza, Solveiga
- Subjects
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SCOTS pine , *PINACEAE , *FIRE lookouts , *FIRE debris - Abstract
It is important to conduct studies on the fire impact in different forest site types in order to obtain information for the planning of forestry activities, financial gain or loss prediction after the forest fire. The topic is current because in the scale of Latvia there is no significant research about the fire impact on radial growth of trees. The study analyzes impact of fire occurred nine years ago in middle-aged Scots pine stand growing in forest site type Vacciniosa turf.mel. During the research mortality of trees were compared and sanitary conditions in areas affected by the forest fire and in unaffected areas were evaluated as well as the analysis of forest fire impact on the dynamics of radial growth of the stand was carried out. For the collection of empirical data five sample plots in the affected part by fire and five in unaffected part of the stand were established each 500 m2 large. The diameter and height of trees and height of the scorch were measured, Kraft class were established, cores were taken for measuring the width of annual rings, and sanitary conditions were estimated listing cracked barks caused by fire, insect damages, bark openings at the root collar and exposed roots. Analysis of the data shows that forest fire does not significantly affect the amount of tree mortality as evidenced by analysis of variance (p<0.05). In assessing the sanitary conditions it was found that between all tree damages after fire cracked bark have the greatest proportion (14%), followed by insect damaged trees (7%), trees with bark opening at the root collar (4%) and trees with exposed roots (3%). There is a significant difference between the number of cracked bark in different diameter groups and in the groups of the maximum height of scorching, most of them are found in diameter group up to 20 cm and in the maximum scorching group from 1.51 m to 2.00 m. The effect of fire impact on growth dynamics of tree stand is negative creating a volume reduction in average of 2 m3 ha-1 per year. Overall volume reduction of stand since 2004 is 18.7±0.21 m3 ha-1, potential loss reach 704.14 LVL i.e. 950.25 EUR. [ABSTRACT FROM AUTHOR]
- Published
- 2013