In order to calculate the cost of carbon dioxide fixation by the large scale afforestation (AF) for the reduction of the global greenhouse gas, we have analyzed in detail about the one model AF data and4publication AF data. In this report, we have defined the unit cost of accumulated (Acc) AF cost by US$⁄ha⁄year as below.
The unit cost of Acc AF cost by US$⁄ha⁄year
=The Acc AF cost by US$⁄the Acc area of AF by ha⁄year
As a result, we have obtained an estimated (Est.) cost of AF by US$⁄ha⁄year with the functional formulas of the AF year (n) and the gross domestic product per capita (GDP
⁄cap) of the AF country.
Est. cost of AF by US$⁄ha⁄year=130+0.0341×n
-0.445×GDP
⁄cap (20≤n≤30)
There is a significant coefficient (R
2=0. 88) in 44 data between the real Acc total cost of AF and the Est. value.
By the same token, we have obtained Est. Cost of AF by US$⁄ha⁄year among 3 to 30 years of AF.
Est. Cost of AF by US$⁄ha⁄year=800×n
-0.566+0.141×n
-0.879×GDP
⁄cap (3≤n≤30)
In this case, there is a nearly equal coefficient (R
2=0. 90) in 157 data between the real Acc. Total Cost of AF and the Est. Cost of AF.
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