June 5 marks World Environment Day. It is an event celebrated every year to raise global awareness about the need to take positive environmental action.

The 2012 theme for World Environment Day is "Green economy: does it include you?" A Green economy is low carbon, resource efficient and socially inclusive. However, China's economic and social development has come at the cost of resources and the environment.

To improve the environment, China has made great efforts in recent years. While restructuring the economic development mode, China encourages enterprises to gain economic benefits through developing green industries.

Meanwhile, air quality has been a major concern to people in China. In today's press conference, top Chinese environmental protection officials said the country will launch new air quality standards in pilot cities this year.