General Survey of Cities
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’s 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.