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Developed Areas

refer to the land in administrative areas having been developed concentratedly with municipal public facilities. For core city, developed areas include concentrated areas and decentralized areas, having basic perfect municipal public facilities; for the city with several towns, developed areas are composed of several concentrated areas with municipal public facilities. Therefore, the scope of developed areas refers to actual construction land of a city.

Water Resources

refers to gross water supply by supply systems from sources to consumers, including losses during distribution.

Chemical Oxygen Demand (COD) 

refers to the amount of oxygen required when chemical oxidants are used to oxidize organic pollutants in water. A higher value of COD corresponds to more serious pollution by organic pollutants. 

Industrial Waste Water Discharged

refers to the volume of waste water discharged by industrial enterprises through all their outlets, including waste water from production process, directly cooled water, groundwater from mining wells which does not meet discharge standards and sewage from households mixed with waste water produced by industrial activities, but excluding indirectly cooled water discharged (It should be included if the discharge is not separated with waste water).

Ratio of Meeting Standard of Industrial Waste Water Discharged

refers to percentage of industrial waste water meeting discharge standards over total industrial waste water discharge. It is calculated as:

 

Industrial Waste Gas Emission

refers to discharge into atmosphere of waste air containing pollutants generated from fuel burning and production process in enterprises within a given period of time. It is calculated at standard status (273K, 101325Pa) as:

Industrial Waste Gas Emission = Emission through Fuel Burning +  Emission through Production Process

Industrial Dust Emission

refers to volume of dust emitted by production process of enterprises and suspended in the air for a given period of time, including dust from refractory material of iron and steel works, dust from coke-screening systems and sintering machines of coke plants, dust from lime kilns and dust from cement production in building material enterprises, but excluding soot and dust emitted from power plants.

Industrial Waste Residue Produced

refers to total volume of solid, semi-solid and high concentration liquid residues produced by industrial enterprises from production process in a given period of time, including hazardous wastes, slag, coal ash, gangue, tailings, radioactive residues and other wastes, but excluding stones stripped or dug out in mining (gangue and acid or alkaline stones not included). A stone is acid or alkaline depending on the pH value of the water below 4 or above 10.5 when the stone is in, or soaked by, the water.

Comprehensive Utilization of Industrial Waste Residue

refers to volume of solid wastes from which useful materials can be extracted or which can be converted into usable resources, energy or other materials by means of reclamation, processing, recycling and exchange (including utilizing in the year the stocks of industrial solid wastes of the previous year). Examples of such utilizations include fertilizers, building materials and road materials.

Ratio of Comprehensive Utilization of Industrial Waste Residue

refers to the percentage of industrial solid wastes utilized over industrial solid wastes produced (including stocks of the previous years). It is calculated as:

 

Level of Equivalent Noise (LEQ)

refer to the A sound pressure of a continuous steady state sound, in the specified time interval with the same mean square A sound pressure as the time variant noise. This sound level of a continuous steady state sound is the equivalent sound level of the time variant noise. The smaller of the value of noise equivalent sound level (dB), the better.

Natural Reserves

refer to certain areas of land, waters or sea that are representative in natural ecological systems, or are natural habitats for rare or endangered wild animals or plants, or water conservation zones, or the location of important natural or historic relics, which are marked by law and put under special protection and management. Natural reserves are designated by the formal approval of governments at and above county level (including those approved by relevant departments or ��revolutionary committees�� before 1980). Scenic spots and cultural preservation zones are not included.