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. The capacity is determined mainly on the weakest of the above-mentioned four segments.
Length of Water Supply Pipelines refers to the total length of all the pipelines between the water pumps and introduction pipe for various users, excluding pipelines newly installed but not used yet, pipeline in the water factory, and pipeline in the user��s buildings.
Total Volume of Urban 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.
Water Use by Household Consumption refers to water of all resident families for daily use in urban areas, includes city dweller, rural household and water of public water supply station.
Coverage Rate of with Access to Water supply refers to the ratio of with access to water supply to the total population at the end of the reference period. The formula is:
Volume of Gas Sales refers to the total volume of gas sold to various users by gas-producing enterprises (units) during the reporting period.
Coverage Rate of Population with Access to Gas refers to the ratio of the population with access to gas to the total population at the end of the reference period.. The formula is:
Length of Paved Roads refers to the length of roads with paved surface including bridges and tunnels connected with roads. Length of the roads is measured by the central lines.
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.
Length of Urban Sewage Pipes refers to the total length of general drainage, trunks, branch and inspection wells, connection wells, inlets and outlets, etc.
Area of Urban 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.
Park refers to perennially open green spaces for public tours, ornaments, recreations, scientific, cultural and leisure activities, with perfect facilities, good greening environment and beautiful scenery.
Park area refers to the total area occupied by comprehensive parks, special parks and zonal parks at the end of the reference period.
Vehicles and Facilities 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.
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