Explanatory Notes on Main Statistical Indicators
Length
of Railways in Operation refers to the total length
of the trunk line for passenger and freight transportation in full operation or
temporary operation.
Length
of Highways refers to the actual length of highways at the end of reference period. It
covers public roads running vehicles among cities, city and rural areas,
township (villages), highways passing through streets at small cities and
towns, length of bridges and tunnels, width of ferry piers. It does not include
the length of streets in cities, dead end highways, the length of streets built
for agricultural (forest) production and inside factories (mines). It can only
be calculated with the actual mileage having been completed, checked and
accepted or put into operation. If two or more highways go the same section of
the way, the length of the section is only calculated for once.
Length
of Navigable Inland Waterways refers to the length
of natural rivers, lakes, reservoirs and canals that are open to navigation for
ships and rafts during a given period. It includes the channels with annual
seasonal navigation for more than three months other than the waterways only
for scattered bamboo and wooden rafts. If two provinces share one river as the
border, the length of waterways will be half divided for each province to avoid
duplication.
Length
of Routes with Scheduled Flights refers to the total length of all routes for scheduled flights, which is
calculated using million kilometres as the unit.
There are usually two ways to calculate the route length: duplicated
calculation and non-duplicated calculation. Duplicated calculation means that
the same segment of different routes can be added duplicately,
while the non-duplicated calculation allows the same segment of different
routes be counted once only.
Freight
(Passenger) Traffic refers to the volume of freight (passenger) transported with various
means. Freight transport is calculated in tons and passenger traffic is
calculated in the number of persons. Despite the type of freight and traveling
distance, the freight transport is calculated in the actual weight of the
goods: and despite the traveling distance and ticket price, the passenger
traffic is calculated by the principle that one person can be counted only once
in one travel. The passengers who travel with a half price ticket or a child
ticket is also calculated as one person. The freight (passenger) traffic
provides a quantitative measure to show how the transport industry serves the
national economy and people, and is also an important indicator for planning
the transport industry and for studying the development scale and speed of the
transport industry.
Freight
Ton-kilometers (Passenger-kilometers) refer to the sum of the products of the volume of transported cargo
(passengers) multiplying by the transport distance. It is an important
indicator to reflect the achievement of transportation industry. Normally, the
shortest distance between the departure station and the destination station
(i.e., the payable distance) is the basis to calculate the freight
ton-kilometers. This is an important indicator to show the total results of the
transport industry, to prepare and examine the transport plan and to measure
the efficiency, the labor productivity and the unit cost of transport. The
formula is as follows:
Freight Ton-kilometers (Passenger-kilometers)
=��{Freight
(Passenger) Traffic x Distance of Transportation}
Measuring unit: ton-kilometer
(person-kilometer)
Business
Volume of Post and Telecommunications refers to the total amount of postal services, expressed in value terms,
provided by the post and telecommunications departments for society. This
indicator reflects the overall results of development of postal and
telecommunication services. It can be classificated
as postal services and telecommunication services. Business volume of post and
telecommunications is the sum of all services in kind multiplying with the unit
price (constant price) to get the total business value.
Mobile
Telephone Subscribers refer to persons who have gone through registration procedures in the
operation points of enterprises engaged in telecommunications and are hence
connected with the mobile telephone communication network through the mobile
telephone switchboards and occupy mobile phone numbers. Included are various
types of subscriber, prepaid users for intelligent network and wireless network
card users.
Local
Telephone Subscribers refer to all subscribers who
have gone through registration procedures in the operation points of
enterprises engaged in telecommunications and are hence connected to the local
telecommunications service provider through fixed line network. Included are
general subscribers, wireless local telephone subscribers, public telephones
subscribers, N-ISDN subscribers and intelligent network terminal subscribers.
Urban
Telephone Subscribers refer to the number of telephone subscribers, located at the
municipalities directly under the Central Government, cities under the
jurisdiction of province, cities at prefecture level, downtown and suburb of
city at county level town and county towns according to the administrative
division, including subscribers in rural mineral area, forest area, military
area that are at or above county level.
Rural
Telephone Subscribers refer to telephone
subscribers, located at the towns and villages outside the coverage of urban
areas according to the administrative division.
Household Telephone Subscribers refer to all kinds of subscribers with telephone sets paid privately or installed in the dwelling units of residents, and registered as private subscribers or residence subscribers for payment.