It is explicit that forest harvesting operations have effects on forest soil at operation sites. In this paper, investigations for the changes of physical and chemical properties of soil in a Larch Forest, occurred after operations, have been carried out in Daxinganling Forest Region, China. The further influences to regeneration at sites by both natural and artificial ways have been studied. Investigations and studies focus on changes of the soil properties and the regeneration qualities, caused mainly by two different harvestings: clear cutting and selective cutting, which are quite popular in northeast part of China. Preliminary results of investigations and laboratory analysis as well as studies show that significant differences of soil properties and regeneration qualities exist between the normal soil and the soil disturbed by harvesting. Based on these results, the authors of this paper presented a certain number of recommendations for harvesting operations in a Larch Forest in Daxinganling Forest Region, China from the point of view of environmental considerations as well as the development of a larch forest.
Key words: harvesting, physical, chemical, regeneration.
Correspondence: Wang Lihai, Northeast Forestry University, P.O.Box 245, Harbin 150040, China
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