Abstract: Territory differentiation is no longer a term in geography. It involves not only natural evolution in the terrestrial ecosystem, but also economy, ecology, environmental protection, carbon emission and carbon-sink trade etc., under the influence of human's activities. The national research on territory differentiation is mainly about agricultural land use, agricultural resources, and agroecology. More recently, it focuses on social and economic fields. The mathematical model and simulation are commonly used. Several high-impact papers are published and new research methods have been applied in recent years.