Wednesday, September 28, 2005
Sokli; koivua ja katajaa - Birch and juniper growing in mixture in Sokli
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Sokli phosphorite area is situated north-west of Varrio nature reserve. In Sokli the Scots pine forest suddenly changes into strange two-layer forest: the upper layer is pure birch (Betula pubescens) and the lower layer is growing dense juniper (Juniper communis). The explanation for this is thought to be the phosprorus-rich soil of Sokli. That is why a phosphorite mine was planned to be opened in Sokli at the turne of 1960s to 1970s. This was the time when forest fertilization (which needed a lot of phosphorus) was in a steady rise in Finland. The forest fertilization, however, went drastically down after the 1970s energy crises. As a result, Sokli mine was never opened.