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 Parks and Green Land 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: