another point is: since WW2, denmark has one of the highest, if not THE highest, percentages of area under agriculture. During WW2, we temporarily allowed agriculture on very poor farmland. It was meant to cease after the war, but our strong farmer lobbyists kept extending the permission.. So it is not about giving up 'good farm land', it is about stopping abusive agriculture which is only possible with extreme chemistry. Source: am Old dane.
Nah, these policies are aimed into increasing food imports (therefore decreasing food security btw), because it's easier for politicians to steal money with off-shore businesses.
And the farmers alao get shafted in the process, farmers are always totalitarian's first target. Venezuela, Rwanda, Zimbawe, Cuba.
What percentage of output is accounted for in the lower tier (not good) farmland? If the land is truly suboptimal the additional costs will not scale with the reduction of output.
I'm sorry I'm not directly answring your question. But part of the answer is, that we are not really intending to fix the CO2 issue. A/the major point with the initiative is that we have effectively killed marine/water life in our local rivers, lakes and near coastal areas, primarily by the leakage of fertilizer from low-yield farming areas (algae remove oxygen from our water, having thus killed off marine life). Because of this, we are no longer discussing the economics of it - once you kill off all marine life, the price is 'always' too high (the way we see it..) So, it might help or not help CO2, but our immediate concern is making it possible to have life in our local water bodies, and more oxygen than 0%. I'm describing it a bit crude, but this should paint the general picture. If we run out of food and starve, we can return to killing allmarine life again :-)