ABSTRACT
The outbreak of the global resources and environmental crisis in 1960s and 1970s caused a series of problems. Since then, people have begun to pay attention to land capacity. Nevertheless, the early concept of land carrying capacity only considered the capacity of food production. In the 21st century, the connotation and denotation are extended. For one thing, the scope of land expands, from the initial arable land for food production to a broader sense of the land. For another, the scope of bearing capacity increases, including not only the population, but also a variety of human activities and their social and economic scale and intensity as well as strategic thinking for sustainable development and harmonious society. At the same time, analyzing technologies and methods of land capacity also tends to diversify, but they contain deficiencies. For instance, the subjectivity of AHPindex weight is too large; the rules of genetic algorithm is complex and its astringency is general; the ecological footprint method does not consider technical factors.
