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| Toru KOIZUMI | |
| Chief | |
| Kyushu Research Center, | |
| Forestry and Forest Products Research Institute, | |
| 4-11-16, Kurokami, Kumamoto, 860-0862, Japan | |
| Tel: +81-96-343-3168 Fax: +81-96-344-5054 | |
| E-mail: koizmy@affrc.go.jp |
22,915,000 Yen
(FY 2000; 11,331,000 Yen)
A history of forest disturbance, institutional and economic analysis of forestry in the Russian Far East, and influences of forest disturbance on ecosystem were surveyed in the boreal forest, near Khabarovsk. Forest disturbances occurred on the lowland in 1980's, while on the backland in 1990's. Forest cutting seemed to be the main cause of the disturbance. Although timber export had increased in 1990's, the profit was rarely reinvested with both forest production and industry sector. Although methane was taken up by the soil in natural forest, methane emission was observed at a high moist area in the felling site. S042- fluxes indicates that there was much input of artificial acidic deposition at forest ecosystems at Khabarovsk, Russia. A kind of fungus, Patella scutella, could be an indicator of disturbance of forest floor. Soil animal population increased in felling site due to an addition of organic matter supplied by the residue of wood litter. In contrast, rodents contributing seed dispersal were not recorded in the center of disturbed areas. Methane uptake was significantly related to soil temperature and moisture.
Biological Diversity, Russian Boreal Forest, Forest Disturbance, LANDSAT Image, Biogeochemical fluxes