The paper makes a preliminary study on the connotation and background of recycle economy, advanced theory and technical support, institutional guarantee and how to design the development program of China's environmental protection industry by virtue of the concept of recycle economy.

The paper explores the necessity for further expanding the comprehensive utilization of gangue in China.

The economic slowdown poses challenges for the transformation of resource-based cities. Taking the city of Yulin in Shaanxi province as the object of study, this report finds difficulties with the transformation of resource-based cities.

The development of clean gas energy such as natural gas, shale gas, coalbed methane, coal gas, and gas hydrate will alleviate the tremendous pressure the country faces in energy security, environmental protection and reduction of pollutant emissions.

The area of the three rivers' headstream is located in the core of the Tibet Tableland, and essential to the safety of China's environment and economy.

With the economic development and opening-up to the outside world, China's economy has become all the more dependent on foreign market and resources, especially on petroleum resources.