Productivity potentials of the global land resource for cropping and grazing

The chapter gives an overview of global land potentials, crop yields and their limiting factors, and of methods to evaluate the productivity potential of land. Maintaining the capacity of the global land resource to produce plant biomass which can be used for humans is one of the most challenging issues of the 21^st century. We need methodologies to observe and control the status of the potential productivity of agricultural and other lands. …