The NGO say that when you replace trees in the jungle with palm oil trees it will be a loss in CO2 absorption and not save CO2 emission but increase. I doubt that.

1st. It is true in phase of planting palm oil trees because it take 4 years to first be harvested.

2. I know that 1 ha of palm oil trees produce up to 4 tons of palm oil. From that I can calculated by stochiometrie that that is equal to 4 times the mass of CO2.

conclusion 1 ha of palm oil trees absorb 4. * 4 = 36 tons of CO2

Please check

3. If that is correct, I doubt that a tree in the jungle absorbed more or maybe equal but I guess lesss CO2 from the athmospher because it does not convert the CO2 into too 4 tons of oil or any other CO2 capturing material

Accordingly, growing palm oil trees making biodiesel therefrom will not increase CO2 in the atmosphere but reduce it

If not I would like to really understand why (Please leave off the point of variety of animal and species, with that argument I agree)