1. Introduction To achieve the goals of the Paris Agreement on climate change, many countries are aiming at CO2 or greenhouse gas (GHG) neutrality, e.g., Germany by 2045 [1], the European Union by 2050 [2], and China by 2060 [3], among others. As a consequence, decarbonisation transformations are required in all sectors of the economy, in particular in the energy sector, the agriculture sector, as well as in the land use, land use change, and forestry (LULUCF) sector [4].
