Evaluation on the Warning-Degree of the Ecological Carrying Capacity of Guangzhou City Based on the DPSIR Model

Abstract

Evaluation on the ecological carrying capacity is related to the sustainable development of cities. The evaluation requires a scientific, reasonable and intuitive evaluation method system. In order to evaluate the ecological carrying capacity of Guangzhou city, based on the “Driving-Pressure-State-Impact-Response (DPSIR)” model, this paper constructs a warning-degree evaluation index system for city, evaluates the ecological carrying capacity, judges the warning-degree of Guangzhou City from 2009 to 2018 by the method of entropy weight, and puts forward the countermeasures and suggestions to improve the city carrying capacity. The calculation result shows that the comprehensive index scores of the warning-degree evaluation of ecological carrying capacity of Guangzhou city are rising, the warning degree decrease from high to medium and low during the research period. Comparing each evaluation subsystem, there is a slight drop in the driving subsystem index scores, while pressure, impact and response index scores increase significantly. And the contribution proportion of each subsystem to the comprehensive index score is different. The pressure subsystem makes the biggest contribution. Therefore, Guangzhou should continue to encourage technological innovation, promote the use of clean production, implement energy conservation and emission reduction, and develop a green economy. The government should strengthen ecological and environmental protection legislation, and improve the economic policy system for ecological and environmental protection. The public should raise the environmental protection, ecological and participation awareness.