Abstract: Resources and the environment are the basic material conditions for human survival, and the evaluation of resource and environmental carrying capacity can provide a data basis for regional land and space planning. Firstly, construct an evaluation index system of resources and environment carrying capacity in Gansu Province from the three subsystems of resources (environment, economy and society). Secondly, use the entropy method to comprehensively evaluate the comprehensive carrying capacity of Gansu Province from 2004 to 2019 and the carrying capacity of the three subsystems, and the coupling coordination degree model is used to measure and analyze the internal coupling coordination of the three subsystems. Finally, the obstacle degree model is introduced to obtain the obstacle factors of Gansu Province’s resource and environmental carrying capacity improvement. The results show that from 2004 to 2019, the resource and environmental carrying capacity index of Gansu Province has increased from 0.207 in 2004 to 0.876 in 2019, showing a steady upward trend, and changing from an uncarryable stage to a strong carrying stage; The carrying capacity of resources, environment, and economic and social subsystems has shown a trend of increasing year by year, however, the level of carrying capacity of resources lags behind that of the economy, society and environment; The degree of system coordination has increased from 0.355 in 2004 to 0.935 in 2019, showing a steady increase. In 2019, it is in a stage of high coupling and high-quality coordination, and the resource, environment, and economic and social subsystems are in a state of benign coupling. The resource criterion layer is the main criterion layer that restricts the carrying capacity of resources and environment in Gansu Province. The development and utilization of natural resources, the level of pollutant emission, the level of farmland infrastructure construction, and the construction of social security systems are the main obstacles constrainting the improvement of the carrying capacity of resources and environment in Gansu Province. Research shows that the carrying capacity of resources and the environment and the internal coordination of the system in Gansu Province are currently at a relatively high level. At the same time, there is still room for improvement in the development and protection of resources and environment. Therefore, it is recommended to strengthen the unified registration of natural resources, establish long-term monitoring and early warning, improve the carrying capacity of resources and the environment in terms of mechanisms, introduce agricultural science and technology, and establish a sound ecological compensation mechanism.

Key words: resource and environment carrying capacity, entropy weight method, coupling and coordination, obstacle factors, Gansu, China