Explanatory Notes on Main Statistical Indicators
Production
Capacity of Water Supply refers to the designed comprehensive production capacity of
water facilities, covering the 4 links of water collection, purification,
conveyance, and outflow through trunk pipelines. Increase capacity
through transformation and innovation projects are included as well. The
capacity is determined mainly on the weakest of the above-mentioned 4 links.
Length
of Water Supply Pipelines at the Year-end refers to the total length of all the pipelines
between the water pumps and the user抯 water
meters, excluding pipelines newly installed but not used yet.
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 the water consumption of households for
daily life and the 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 in the boundary of
cities, including households of urban residents and farmers, and public water
supply stations.
Percentage
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:
Percentage
of population with access to tap water= (Urban population with access to tap
water) / (Urban population)×100%
Production
Capacity of Gaswork Gas refers to the comprehensive 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 link 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.
Percentage
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:
Percentage
of population with access to gas = (Urban population with access to gas / Urban
population) x 100%
Heating
Capacity in Urban Area 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 Area 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 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 the Year-end refers to the length of roads with paved surface including
squares 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 pedestrian, underpasses for pedestrian, 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 the 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 Gardens and Green Areas refers to the total area occupied for green projects at the end of the
reference period, including public green land, green land in residential
quarters, green land attached to institutions, protection green land,
production green land, roadside green land and forest in scenic spots. It does
not include the following:
(1)
Greenery and plants on roofs, balconies, indoors and vertical green areas;
(2)
(3)
Water areas that are not included in urban master plan as green land.
Public
Green Area refers to green areas open to the public such as
municipal, community and neighborhood parks and roadside parks, including
waters within parks. Neighborhood parks should occupy an area larger than 10,000
square meters, and the width of roadside parks should occupy an area larger
than 400 square meters, with a width of more that 8 meters.