Explanatory Notes on Main Statistical Indicators

Production Capacity of Tap Water at the Year-end  refers to the actual comprehensive production capacity of the waterworks administered by the urban construction department and those owned by enterprises or institutions, taking the capacity of the main links, such as water inflow, purification,conveyance and outflow of the trunk pipelines into account.

Length of Water Supply Pipelines at the Year-end  refers to the total length of all the pipelines between the water pumps and the users water meters.

Annual Volume of Water Supply  refers to the total volume of water supplied by the public water-works and those owned by individual enterprises and institutions during the whole year, 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 welfare facilities,including the consumption of restaurants,hotels,hospitals,barber shops,public bathhouses,laundries,swimming pools, shops, schools, institutions, army units and other units.

Percentage of Urban Population with Access to Tap Water refers to the ratio of the urban non-agricultural population (excluing temporary and mobile population)with access to tap water to the total urban non-agricultural population.The formula is:

Percentage of Population with Access to Tap Water  ＝Urban Non-agricultural Population with Access to Tap Water ÷Urban Non-agricultural Population×100%

Production Capacity of Gaswork Gas  refers to the actual comprehensive production capacity of the urban gasworks in gas generation,purification and delivery.

Length of Gas Pipelines  refers to the total length of  pipelines between the outlet of the compressor, blower or gas tank and the gas meters of users.

Volume of Gas Supply  refers to the total volume of gas sold to users in a year, including the volume for industrial use, residential use and other uses.

Percentage of Urban Population with Access to Gas  refers to the ratio of the urban non-agricultural population with access to gas (including gas, liquefied petroleum gas and natural gas) to the urban non-agricultural population(excluding temporary and mobile population). The formula is:

Percentage of Population with Access to Gas =Urban Non-agricultural Population with Access to Gas÷Urban Non-agricultural Population×100%

Heating Capacity in Urban Area  refers to the capacity of hourly supply of steam and hot water to cities by thermal power plants,heating corporations and centralized heating boiler rooms which meet certain standard.

Heating Volume in Urban Area  refers to the total volume of steam and hot water supplied to cities every year by thermal power plants,heating corporations and centralized heating boiler rooms which meet certain standard.

Length of Heating Pipelines  refers to the total length of pipelines for centralized supply of steam and hot water from the thermal power plants,heating corporations and centralized heating boiler rooms which meet certain standard to the users.

Length of Paved Roads at the Year-end  refers to the length of roads with a paved surface,and with a width of more than 3-5 meters, including high quality,medium quality and ordinary roads.

Urban Bridges refer to bridges over river courses, great separated junctions and overpasses in urban areas.Permanent bridges and semi-permanent bridges are included.Temporary bridges,railway bridges and culverts are excluded.

Length of Urban Sewage Pipes  refers to the total length of general drainage, trunks. branch and blind drainage, inspection wells, connection wells, inlets and outlets, etc.

Daily Disposal Capacity of Urban Sewage  refers to the designed 24 hour capacity of sewage disposal at the sewage treatment works.

Number of Public Vehicles (Buses and Trolley buses) at the Year-end refers to the total number of operational buses available at the year-end, including the year-end operational vehicles and vehicles in stock.Non-operational vehicles such as stringing cars,tank cars,machine shop cars,trucks and other special vehicles and the borrowed passenger vehicles are excluded.

Area of Urban Gardens and Green Areas  refers to the total area of urban public green land,special green land,production green land,protection green land and suburban scenic spots.

Public Green Area  refers to green areas of various parks, zoos, botanical gardens, cemeteries, amusement parks, tree-flanked boulevards greenland squares for tourism and relaxing.Areas with trees planted along-side the streets and boulevards are excluded.