主要统计指标解释
水综合生产能力 指按供水设施取水、净化、送水、出厂输水干管等环节设计能力计算的综合生产能力。包括在原设计能力的基础上，经挖、革、改增加的生产能力。计算时，以四个环节中最薄弱的环节为主确定能力。
年末供水管道长度 指从送水泵至用户水表之间所有管道的长度。不包括新安装尚未使用、水厂内以及用户建筑物内的管道。
全年供水总量 指报告期供水企业(单位)供出的全部水量。包括有效供水量和漏损水量。
生活用水量 包括公共服务用水和居民家庭用水。公共服务用水指为城市社会公共生活服务的用水。包括行政事业单位、部队营区和公共设施服务、社会服务业、批发零售贸易业、旅馆饮食业以及其他公共服务业等单位的用水。居民家庭用水指城市范围内所有居民家庭的日常生活用水。包括城市居民、农民家庭、公共供水站用水。
用水普及率 指城市用水人口数与城市人口总数的比率。计算公式：
人工煤气生产能力 指报告期末人工煤气生产厂制气、净化、输送等环节的综合生产能力，不包括备用设备能力。一般按设计能力计算，如果实际生产能力大于设计能力时，应按实际测定的生产能力计算。测定时应以制气、净化、输送三个环节中最薄弱的环节为主。
供气管道长度 指报告期末从气源厂压缩机的出口或门站出口至各类用户引入管之间的全部已经通气投入使用的管道长度。不包括煤气生产厂、输配站、液化气储存站、灌瓶站、储配站、气化站、混气站、供应站等厂(站)内的管道。
全年供气总量 指全年燃气企业(单位)向用户供应的燃气数量。包括销售量和损失量。
燃气普及率 指报告期末使用燃气的城市人口数与城市人口总数的比率。计算公式为：
城市供热能力 指供热企业(单位)向城市热用户输送热能的设计能力。
城市供热总量 指在报告期供热企业(单位)向城市热用户输送全部蒸汽和热水的总热量。
城市供热管道长度 指从各类热源到热用户建筑物接入口之间的全部蒸汽和热水的管道长度。不包括各类热源厂内部的管道长度。
年末道路长度 指年末道路长度和与道路相通的桥梁、隧道的长度，按车行道中心线计算。在统计时只统计路面宽度在
城市桥梁 指为跨越天然或人工障碍物而修建的构筑物。包括跨河桥、立交桥、人行天桥以及人行地下通道等。按使用年限分为永久性桥和半永久性桥。
城市排水管道长度 指所有排水总管、干管、支管、检查井及连接井进出口等长度之和。
城市污水日处理能力 指污水处理厂(或污水处理装置)每昼夜处理污水量的设计能力。
年末运营车数 指年末城市用于公共交通运营业务的全部车辆数。新购、新制和调入的运营车辆，自投入之日起开始计算；调出、报废和调作他用的运营车辆，自上级主管机关批准之日起不再计入。
城市绿地面积 指报告期末用作园林和绿化的各种绿地面积。包括公园绿地、生产绿地、防护绿地、附属绿地和其他绿地的面积。
公园绿地 城市中向公众开放的以游憩为主要功能，有一定的游憩设施和服务设施，同时兼有健全生态、美化景观，防灾减灾等综合作用的绿化用地。包括综合公园、社区公园、专类公园、带状公园和街旁绿地。其中综合公园、专类公园和带状公园面积之和为公园面积。
清扫保洁面积 指报告期末对城市道路和公共场所（主要包括城市行车道、人行道、车行隧道、人行过街地下通道、道路附属绿地、地铁站、高架路、人行过街天桥、立交桥、广场、停车场及其他设施等）进行清扫保洁的面积。一天清扫多次的，按清扫保洁面积最大的一次计算。
市容环卫专用车辆 指用于环境卫生作业、监察的专用车辆和设备，包括用于道路清扫、冲洗、洒水、除雪、垃圾粪便清运、市容监察以及与其配套使用的车辆和设备。
每万人拥有公共交通车辆 指报告期末城区内每万人平均拥有的公共交通车辆标台数。计算公式：
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 Gasworks 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, and
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 populations in the city district. The formula
for calculation is:
