Changes in the Nature Reserve District stands at Jaervselja during the last six decades
2001
Kasesalu, H. (Estonian Agricultural Univ., Tartu (Estonia). Forest Research Inst.)
The author of the present paper carried out the forest inventory of the stands of the nature reserve district in 2000. There are present the stand assessment indices collected during the measurement work. The mire forests where pine and spruce have survived as chief tree species grow along the western forest vista of the nature reserve. The changes in these stands are relatively small. A common alder stand on an alder fen site, where the changes in the composition and the average dimensions of the stand are also small, can be found in the middle part of the nature reserve. Along the eastern forest vista the stands grow on fertile mineral soils. The biggest changes during the last six decades have taken place in these stands. In some places the lime, the common ash and the maple have reached the first tree layer. In the old aspen stand growing in the middle of the strip the chief tree species has intermingled with spruce in the second tree layer. In the nemoral forest, the understorey of aspen and birch is very small and insufficient to form a new forest generation. The dead parts of the forest are extensive in these stands
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