Explanatory Notes on Main Statistical Indicators
Developed Area
refers 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.
Total Water Resources
refer to the total volume of surface and underground water
formed by precipitation in the local region, which equals to the sum of surface
runoff and the infiltration supplement of underground water from precipitation,
excluding crossing water.
Chemical Oxygen Demand (COD)
refers to the water pollution index of measuring the mass concentration of
oxygen consumed in the chemical decomposition of organic and inorganic matter.
Industrial Solid Wastes
Produced
refers to the industrial solid wastes that are not
listed in the ��National Catalogue of Hazardous Wastes��, or not regarded as hazardous according to the national hazardous waste
identification standards (GB5085), solid waste-Extraction procedure for leaching
toxicity (GB5086) and solid waste-Extraction procedure for leaching toxicity
(GB/T 15555). The calculation formula is as followed:
Common Industrial Solid
Wastes Produced = (common industrial solid wastes utilized-the proportion of
utilized stock of previous years) + common industrial solid waste stock +
(common industrial solid wastes disposed-the proportion of disposed stock of
previous years) + common industrial solid wastes discharged.
Industrial Solid Wastes
Comprehensively Utilized
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) during the report period, e.g. being used as agricultural
fertilizers, building materials or as material for paving road. Examples of
such utilization include fertilizers, building materials and road materials.
The information shall be collected by the producing units of the wastes.
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:
Ratio
of Comprehensive Utilization of Industrial Waste Residue =
Level of Equivalent Noise
(LEQ)
refers 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
refers 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. Scenic spots and
cultural preservation zones are not included.