Explanatory Notes on Main Statistical Indicators
Production Capacity of Water Supply refers to the designed overall
production capacity of water facilities, covering the four segments of water
collection, purification, conveyance, and outflow through trunk pipelines.
Increased capacity through transformation and innovation projects is included
as well. The capacity is determined mainly on the weakest of the
above-mentioned four segments.
Length of Water Supply Pipelines at
Year-end refers to the total length of
all the pipelines between the water pumps and the user water meters, excluding
pipelines newly installed but not used yet, pipeline in the water factory,and pipeline in the user’s buildings.
Annual Volume of Water Supply refers to the total volume of
water supplied by water-works (units) during the reference period, including
both the effective water supply and loss during the water supply.
Consumption of Water for Residential
Use refers to water consumption of
households for daily life and water consumption of public service facilities.
The latter refers to water consumption for urban public services, including the
consumption of government agencies and public institutions, military barracks,
public facilities, wholesale and retail outlets, restaurants, hotels, and other
units providing public services. Household water consumption refers to
consumption of water for daily life of all households within the boundary of
cities, including households of urban residents and farmers, and public water
supply stations.
Coverage Rate of Urban Population with
Access to Tap Water refers to the ratio of the urban population with access to
tap water to the total urban population. The formula is:
Production Capacity of Gaswork Gas
refers to the overall production capacity of the urban gasworks in gas
generation, purification and delivery at the end of the reference period,
excluding capacity of the reserved facilities. In general, it is determined by
the designed capacity, and when actual production capacity is larger than the
designed capacity, the capacity is determined by the actual measurement on the
weakest segment in the production, purification and delivery.
Length of Gas Pipelines refers to the total length of
pipelines in use between the outlet of the compressor of gas-work or outlet of
gas stations and the leading pipe of users, excluding pipelines within
gasworks, delivery stations, LPG storage stations, refilling stations,
gas-mixing stations and supply stations.
Volume of Gas Supply refers to the total volume of gas
provided to users by gas-producing enterprises (units) in a year, including the
volume sold and the volume lost.
Coverage Rate of Urban Population
with Access to Gas refers to
the ratio of the urban population with access to gas to the total urban
population at the end of the reference period. The formula is:
Heating Capacity in Urban Areas refers to the designed
capacity of heating enterprises (units) in supplying heating energy to urban
users during the reference period.
Quantity of Heat Supplied in Urban Areas refers to the total quantity of
heat from steam and hot water supplied to urban users by heating enterprises
(units) during the reference period.
Length of Urban Heating Pipelines refers to the total length of
steam or hot water pipelines for sources of heat to the leading pipelines of
the buildings of the users, excluding internal pipelines in heat generating
enterprises.
Length of Paved Roads at Year-end refers to the length of roads
with paved surface including bridges and tunnels connected with roads by the
end of the year. Length of the
roads is measured by the central lines for vehicles for paved roads with a
width of 3.5 meters and over, including roads in open-ended factory compounds
and residential quarters.
Urban Bridges refer to bridges built to cross
over natural or man-made barriers, including bridges over rivers, overpasses
for traffic and for pedestrians, underpasses for pedestrians, etc. Both
permanent and semi-permanent bridges are included.
Length of Urban Sewage Pipes refers to the total length of
general drainage, trunks, branch and inspection wells, connection wells, inlets
and outlets, etc.
Daily Disposal Capacity of Urban Sewage refers to the designed 24-hour
capacity of sewage disposal by the sewage treatment works or facilities.
Number of Vehicles under Operation at
Year-end
refers to the total number of vehicles under operation by public transport
enterprises (units) at the end of the year, based on the records of operational
vehicles by the enterprises (units).
Area of Urban Green Areas refers to the total area occupied
for green projects at the end of the reference period, including park green
land, production green land, protection green land, green land attached to
institutions, and other green areas.
Park Green Area refers to green areas open to
the public for amusement and rest with the facilities of amusement, rest and
services. Its function includes perfecting ecology, beautifying landscape, and
preventing and reducing disaster. Park green areas include comprehensive
park, community park, topic park, belt-shaped park and green area nearby
street. Total areas of comprehensive park, topic park
and belt-shaped is the area of park.
Area Cleaned refers to the area which are regularly
cleaned, as at the end of the reference period, at urban roads and public
places (mainly including urban roadways, pedestrian walkways, vehicular
tunnels, pedestrian underpasses, underground railway stations, lifted roads,
pedestrians walk bridges, overpasses, plazas, carparks
and other facilities). If there are several times of cleaning in a day at a
location, the area of that time of cleaning with the largest area cleaned will
be taken.
Vehicles Dedicated to Urban
Cleanliness and Environmental Sanitation refer to
vehicles and facilities dedicated for use in the operation, management and
monitoring of environmental hygiene work. They include vehicles for road
cleaning, washing, showering, ice removal, disposal of
garbage and human wastes, cleanliness monitoring and related activities.
Public Transportation Vehicles per
10000 Population refers to the number
of public transportation vehicles, at the end of the reference period, per
10000 population in the city district. The formula for
calculation is:
