• Korean Journal of Agricultural and Forest Meteorology
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• v.16 no.4
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• pp.336-342
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• 2014

This study was conducted to estimate of the greenhouse gas inventory on forest land at provincial level. The greenhouse gas emissions are calculated according to the K-MRV guidance. We collected activity data from statistical yearbook of forestry and used default emission factors. The annual total $CO_2$ emission in forest land was -58,711Gg $CO_2eq.$ and the annual $CO_2$ emission in loss such as fellings, fuelwood and fire was 19,896Gg $CO_2eq.$ in 2011. The results showed the removals of carbon dioxide in the forest land, it's amount was -38,815Gg $CO_2eq.$ in 2011. Annual net $CO_2$ removal of local forest was highest in Kangwon province in 2011. Our study did not use the many statistics due to exclusion of double counting. There are need complementary activity data and emission factors, and then we will find a way to calculate the greenhouse gas emissions/removals in the near future.

• Journal of Korean Society of Forest Science
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• v.59 no.1
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• pp.9-14
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• 1983

The study was performed to decide the returns or investment efficiency of the fuel forest established project and to examine its economic value as compared the benefit with the cost occurring from that established by I.B.R.D loan. The data got from the surveying plot and other things connected with the project were applied to the measures of benefit-cost ratio and internal rate of return (IRR). The following are the results from the economic analysis of the fuel forest created by the loan per hectare 1) In case of converting the fuelwood value from the fuel forest into briquet price, the benefit-cost ratio is 1.18 at the 6 percent discount rate and the IRR is appraised to 12.2 percent 2) In the sensitivity analysis estimated by the rising rate of rural wages 27% the yearly mean, the B/C ratio is 1.07 at the 6 percent discount rate and the IRR 9.2 percent. 3) In the sensitivity analysis estimated by the rising rate of briquet price, 26% the yearly mean, the B/C ratio is 1.34 at the 6 percent discount rate and the IRR is appraised high to 15.7 percent 4) In the event of including indirect effects to the direct in the project, the economic effect could be increased just a little more.

• Journal of Korean Society of Forest Science
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• v.55 no.1
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• pp.30-36
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• 1982

Wood biomass production at 1-year, 2-year, and 3-year rotations on both low and upper hills at 2m 2m spacing (25,000 trees/ha) was studied for a six-year period with following 12 species; Lespedeza cyrtobotrya Amorpha fruticosa. Robinia pseudoacacia, Acer saccharinum, Platanus orientalis Populus alba ${\times}$ P. glandulosa $F_1$, Salix alba, Pinus rigida, Alnus hirsuta var. sibirica, A. inokumai A. gultinosa, and A. incana. In One-year rotation, Lespedeza cyrtobotrya produced largest amoung of biomass (2.6 t/ha/year, fresh weight) and Populus alba ${\times}$ P. glandulosa $F_1$ the second largest (2.2 t/ha/year) on low hill. In two-year rotation, the latter produced the largest amount (4.8 t/ha/year) and Alnus hirsuta var. sibirica second largest (2.8 t/ha/year) on low hill. In three-year rotation, the largest weight (11.2 t/ha/year) was produced by Robinia pseudoacacia and the second largest (6.2 t/ha/year) by Alnus hirsuta var. sibirica on low hill Amorpha fruticosa, Acer saccharinum, Platanus orientalis and Salix alba were not suitable for biomass or fuelwood productio due to poor growth. Biomass yield on upper hill was reduced considerably for all tewlve species, with less than 4 t/year at maximum Only nitrogen fixing species (Robinia and Alnus species) are recommended on upper hill for biomass production wood sprouting ability of species was generally associated with good biomass production. Calori values of ovendry wood ranged from 4,485 cal/g for Salix alba to 5,125 cal/g for Alnus glutinosa. For maximum biomass production a three-year ratation with coppice is preferred to one-year and two-year roataions The best species appeared to be Robinia pseudoacacia and Alnus hirsuta var sibirica.