> the agricultural yields are already falling almost everywhere because of climate dereliction
Sorry, but that's not necessarily true. Photosynthesis intensity increases with elevated CO2 [1] and decreases with higher temperatures. The exact effect of higher yields from more CO2, lower yields from temperatures, and increased arable land area from higher temperatures is not well known.
Agricultural yields depend on many more factors than just CO2 and temperature.
There's been a lot more extreme weather events - case in point : australia (recently floods - a lot of them, and the long term drought for over a decade). I'm sure similar stories could be seen in other parts of the world.
Yields are factually decreasing. As just mentioned, because natural disasters are broader, more intense and more frequent as the result of climate warming; that's why I pay attention to say "climate dereliction that the IPCC scientists prefer to "climate warming".
Furthermore, our pollution (plastic, pesticide s, fertilizers, synthetic materials of all kinds, oil spills, etc etc) is destroying the fertile soils, depleting them from its biodiversity. The ratio living creatures of all sizes per ounce of soil is decreasing. Intensive agriculture of cereals for example with Monsanto seeds and pesticides leads to a 80% loss of " life" inside the soil.
To make that worse, the climate warming destroys biodiversity because it rises far too fast for the Nature to adapt. A forest can move one meter per year in direction of the climate best adapted: the seeds on the less adapted climate die but the seeds on the better side grow. The natural climate cycles varies by a few degrees per 10 000 years (in a global average). The human impact will soon have risen the average temperature of 2ºC in 200 years.
Otherwise, yes, the increase of CO2 in the atmosphere is making the forests rise faster in many places. But it is far from compensating the emissions. And the huge fires in Australia, USA and Siberia, plus the going Amazon forest ecocide have emitted an immense tonnage of CO2.
Sorry, but that's not necessarily true. Photosynthesis intensity increases with elevated CO2 [1] and decreases with higher temperatures. The exact effect of higher yields from more CO2, lower yields from temperatures, and increased arable land area from higher temperatures is not well known.