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Hardwood forest stands in Latvia serves mainly recreational purposes, as well as ensuring biological diversity. Ash stands in 2015 were occupied 0.4% of the total (2923515 ha) forest area. This proportion have been made up from the dominant tree species registered in the State Forest Register. The research was conducted in the pure and mixed stands (other species admixture up to 30%), selecting middle-age (44, 47 years) and mature (66, 67 years) stands with a density of 0.7. For data collection, were installed 16 ...

For unused agricultural land afforestation are several aims like, rational land use, rural landscape diversification, decrement of environment pollution, increasing recreation possibilities and other but also can be established or special purposes planted forest stands as plantation forest. In Latvia during year 2015 State Forest Service (VMD) registered 3.4 thou. ha of afforested agricultural land and 2.7 thou. ha were registered as plantation forests. Aim of research is to analyse sanitary condition of agricultu...