China has unveiled a guideline to comprehensively enhance ecological and environmental protection and win the battle against pollution of air, water and soil.

The guideline, published Sunday by the Central Committee of the Communist Party of China (CPC) and the State Council, specified pollution prevention and control targets the country expects to achieve by 2020 and beyond.

　　A view of the CBD area in Beijing on Jan. 12, 2018. [Photo: Chinanews.com]

China will develop and implement a three-year plan to fight air pollution, with much focus on regions like the Beijing-Tianjin-Hebei region and its neighbouring areas, and the Yangtze River Delta. Efforts will be made to improve the region's industry, energy, transport and land use structures.

By 2020, cities with low air quality standards should see their density of PM 2.5, a key indicator of air pollution, fall at least 18 percent from 2015 levels, while cities at prefecture level and above should see the number of good-air days reach over 80 percent annually.

Emissions of sulfur dioxide and nitrogen oxides should drop at least 15 percent from 2015 levels, while chemical oxygen demand and emission of ammonia nitrogen should decrease by over 10 percent, according to the plan.

For water quality improvement, the country will continue to implement the action plan on fighting water pollution as well as the systems of river and lake chiefs.

China aims to see over 70 percent of its surface water to be drinkable by 2020, while the share of polluted surface water should be controlled within five percent. Meanwhile, about 70 percent of the country's offshore area water should be of good quality.

To address soil pollution, China will comprehensively implement the action plan with specific measures taken to control soil pollution and restore polluted soil, promote classified disposal of waste and enhance prevention and control of solid waste pollution.

By 2020, about 90 percent of the polluted farmland can be utilized safely while over 90 percent of the contaminated land will be able to be used safely, according to the guideline.