Metoder för att undersöka effekterna av naturvårdshänsynen i skogsbruket, efter den senaste skogsvårdslagenMetoder för att undersöka effekterna av naturvårdshänsynen i skogsbruket, efter den senaste skogsvårdslagen.

Sammanfattning: In 1994 a new Forestry Act was accepted in Sweden. One of the aims of the law is to raise consideration forpreservation of biodiversity. Since the new law got accepted and some time has passed, there now lie someinterest in examining whether the law has been effective towards its purpose. Methods suitable for analysishave been examined during this study. The content of this pilot study is based around five parameters whichcan be used to validate the effects of the new law. The field study were executed in Orsa, Dalarna, Sweden ina managed forest where last clearcut was performed after 1994. The work consisted of measuring theparameters specified and comparing the results to reference data from before 1994. The parameters benefit tothe preservation of biodiversity is discussed in the report aswell as the differences between the Forestry Actfrom 1994 and the previous one. The parameters examined in this study were standing dead wood, treespecies, thick big trees, trees with cavities/cavernous trees and smaller areas saved for preservation. All ofthese plus a few other variables are being considered in the 30 § of the Forestry Act of 1994. The reportimplied that the variables had a positive effect on the preservation of biodiversity, and possible to beinvestigated within the restrictions of this study, seemed to have increased. Due to the size of the forest beingsmall and reference data for some parameters missing or covering larger areas, one must be careful wheninterpreting the results.In 1994 a new Forestry Act was accepted in Sweden. One of the aims of the law is to raise consideration forpreservation of biodiversity. Since the new law got accepted and some time has passed, there now lie someinterest in examining whether the law has been effective towards its purpose. Methods suitable for analysishave been examined during this study. The content of this pilot study is based around five parameters whichcan be used to validate the effects of the new law. The field study were executed in Orsa, Dalarna, Sweden ina managed forest where last clearcut was performed after 1994. The work consisted of measuring theparameters specified and comparing the results to reference data from before 1994. The parameters benefit tothe preservation of biodiversity is discussed in the report aswell as the differences between the Forestry Actfrom 1994 and the previous one. The parameters examined in this study were standing dead wood, treespecies, thick big trees, trees with cavities/cavernous trees and smaller areas saved for preservation. All ofthese plus a few other variables are being considered in the 30 § of the Forestry Act of 1994. The reportimplied that the variables had a positive effect on the preservation of biodiversity, and possible to beinvestigated within the restrictions of this study, seemed to have increased. Due to the size of the forest beingsmall and reference data for some parameters missing or covering larger areas, one must be careful wheninterpreting the results.