Explanatory Notes on Main Statistical Indicators
Developed
Area
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.
Total
Water Resources
refers 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:
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. Scenic spots and cultural
preservation zones are not included.