Study on the adaptation capacity of spruce [Picea] species grown on serpentine soil and its application for forest rehabilitation
2006
Kayama, M.(Forestry and Forest Products Research Inst., Kumamoto (Japan). Kyushu Research Center)
In a harsh field where large scaled disturbance occurred and restoration of vegetation is difficult, establishment of reforestation technology is an urgent subject for environmental conservation and disaster prevention. For example, forest fire is one of the factors causing large scaled forest destruction. After a forest fire, restoration of vegetation is affected by edaphic factors, and its speed is quite slow, especially on serpentine region. There is a similar region in the northern part of Japan, and in this region, forest vegetation is not recovered yet because of several forest fire occurred. When reforestation is executed in this region, native woody species that has high adaptation capacity against edaphic factors is desirable. Spruce is a common woody species in the northern part of Japan, and it is expected that spruce is suitable species to restore a harsh field. Spruce species are distributed widely throughout the northern hemisphere, and seven spruce species have been recorded in Japan. In the northern part of Japan, Picea glehnii and P. Jezoensis are widely distributed. P. jezoensis is found on fertile soils whereas P. glehnii is distributed in infertile soil conditions, such as serpentine soil. However, little is known about growth characteristics of P. glehnii and P. jezoensis associated with their habitats.
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