Explanatory Notes on Major Statistical Indicators
【Annual Volume of Water Supply】refers to the total volume of water supplied by the public
water-works and those owned by individual enterprises and institutions during
the whole year, including both the effective water supply and loss during the
water supply.
【Percentage of Urban Population with
Access to Tap Water】refers to the ratio of urban
non-agricultural population (excluding temporary and mobile population) with
access to tap water to the total urban non-agricultural population. The formula
is:
Percentage of Population with Access to Tap
Water=( Urban Non-agricultural Population with Access
to Tap Water ÷ Urban Non-agricultural Population) 100%
【Public Green Area】refers to green areas of various parks, zoos, botanical gardens,
cemeteries, amusement parks, tree-flanked boulevards, green-land squares for
tourism and relaxation. Area with trees planted along-side the streets and
boulevards are excluded.
【Total Discharge of Sewage】includes production sewage and domestic sewage. Production sewage
refers to the total discharge by the enterprises and institutions in their
production and scientific research. Domestic sewage refers to the discharge by
urban and rural residential communities and the residential neighborhoods of
the enterprise/institutions staff.
【Volume of Industrial Waste Water
Discharged】refers to the volume of
industrial waste water discharged, through all outlets, to the outside of
industrial enterprises, including waste water produced, direct cooling water,
underground water from mines that does not meet the standard of discharge, and
the domestic sewage mixed up with industrial waste water when discharged, but
excluding discharged indirect-cooling water.
【Volume of Waste Gas Emission】refers to waste gas emitted from burning of fuels and from
production process in the area of the factory, and is measured by 10000
standard cubic metres each year under normal
condition.
【Industrial Dust Discharged】refers to the total weight of solid dust discharged by industrial
enterprises in the production process, such as dust of refractory materials
from iron plants, dust from coke-screening system or from sintering machines of
coking plants, dust from lime kilns, cement dust from building material
enterprises, etc. but excluding smoke and dust
discharged by power plants.
【Volume of Industrial Solid Wastes
Produced】refers to the total volume of
solid, semisolid or high concentration liquid residue produced by industrial
enterprises in their production process, including dangerous wastes, residues
from melting, slag, powdered coal ash, gangue, chemical residues, tailings,
radioactive residues and other residues, but excluding stripped or dug stones
in mining (except gangue and acid or alkali stones which are stones washed or
soaked by water with a pH value smaller than 4 or larger than 10.5.)
【Social Welfare Institutions】refer to institutions taking care of old people without children, handicapped people and orphans. They include social welfare institutions run by civil affairs departments, children's welfare institutions social welfare institutions for mental patients, and collectiveowned old people's homes in tualareas.