Explanatory Notes on Main Statistical Indicators
Energy Production is
an important indicator reflecting the energy production size, composition and
production results. By the cause of formation, it consists of the production of
primary energy (also known as natural energy) and that of secondary energy
(also known as artificial energy).
Production of Primary Energy means
up-to-grade products produced by primary energy producers in the reporting
period through extraction of existing energy in the nature, mainly including
crude coal, crude oil, natural gas, water and electricity, etc.
Production of Secondary
Energy means various up-to-grade energy products in another form that are made
from primary energy with various processing and converting equipments in the
reporting period, including thermal power, heating power, washed out, coke,
various petroleum products, coke oven gas and other gas, etc.
Total Energy Consumption means the total
consumption of various energies by national economic sectors and resident
households in a specific region (administrative or geographic). Total energy
consumption can be divided into three parts: end-use energy consumption, loss
during energy processing and conversion and loss during energy transport and
management.
Total Energy Consumption
(in Equivalent Caloricity) means the total
consumption of electric power and heating power calculated in equivalent
caloricity. Equivalent caloricity is a caloricity concept frequently used in
statistics of energy. It means the quantity of primary energy input for a
secondary energy produced through processing and conversion, i.e. the primary
energy in terms of caloricity which is consumed to produce one measuring unit
of a secondary energy.
Input and Output of
Energy Processing and Conversion One form of energy can
be converted into another form of energy. And in the consumption, one sort of
energy can be replaced with another. In order to improve the energy use value
and efficiency, energy is processed and converted to produce energy products at
higher levels which are suitable for productive and living needs. In the
processing and conversion input (-) and output (+), “-” means the input for
energy processing and conversion. And “+” means the output from energy
processing and conversion.
Input means the volume
of energy put into the energy processing and converting equipment in order to
produce secondary energy products.
Output means the volume of secondary energy products (including byproducts and
multi-products not used as energy generated) from processing and conversion of
energy sources (primary energy or a small amount of secondary energy re-input).
Loss during Processing
and Conversion means the energy lost in the
processing and conversion of energy, namely the difference between the energy
input and the secondary energy output during energy processing and conversion.
Energy Loss means the loss of energy
during operation, management, production, transportation, distribution and
storage, as well as the loss due to natural factors and other reasons. It
excludes the loss during processing and conversion.
End-use Energy Consumption means the energy
consumption in the last section of energy consumption, including the
consumption of various energy sources used as fuel, raw materials and power.
Such consumption represents the end of energy consumption, and the energy will
not be put into use again as energy. End-use energy consumption does not
include the input for energy processing and conversion, loss during the
processing and conversion of energy, and energy loss.
Elasticity Coefficient of
Energy Consumption means the ratio of growth rate of total energy consumption to
the growth rate of GDP of Beijing.
Elasticity Coefficient of
Electric Power Consumption means the ratio of growth rate of electric power
consumption to the growth rate of GDP of Beijing.
Average
Energy Consumption per RMB10000 GDP means the ratio of total
energy consumption or energy consumption by variety to the GDP of Beijing.
Per-capital
Energy Consumption by Households means the ratio of
quantity of energy consumed by households to the total population.
Daily
Energy Consumption means the ratio of energy
consumption to the actual days in the same year.
Harmless Disposal Capacity of Waste means the quantity of
domestic waste that can be disposed at harmless disposal facilities (sites) according
to the process designed. Harmless disposal facilities (sites) must be domestic
waste disposal facilities, including landfills, manure yards, incineration
facilities and so on, which are designed, built, operated and managed in
accordance with relevant technological, environmental, and sanitary standards
and criterion.
Total Water Resources means
the total volume of surface water and underground water caused by rainfall,
excluding passing-by water.
Length of Drainage
Pipelines
means the total length of all main drain piles,
trunk pipes, branch pipes, access manholes, and connector well entrances and
exits, and so on. The length of single pipes shall be included. Namely, if
there are two or more drain pipes parallel on a street, the length of every
pipe shall be summed.
Waste Water
Disposal Capacity means the designed capacity of waste water disposal for a waste water
disposal plant (or facility).
In terms of extent, waste water disposal consists of
the primary disposal, secondary disposal and tertiary disposal.
Primary Disposal is a disposal process focusing on
deposition. It means a purification process removing the floating and suspended
substances in waste water, mostly deposition.
Secondary Disposal is a disposal
process focusing on biological disposal. It means a purification process further
removing the colloids and resolvable organic substances in waste water after
the process of primary disposal.
Tertiary Disposal is also known as senior or
deep disposal. It means a disposal process further removing any pollutants that
cannot be removed completely in the process of secondary disposal.
Volume of Waste Water
Disposed means the volume of waste water
actually disposed by waste water disposal plants and facilities, consisting of
physical volume, biological volume and chemical volume of waste water disposed.
Rate of Waste Water Disposed
means
the ratio of waste water disposed to the total discharge of waste water. The
formula is:
Rate of Waste Water Disposed = Waste Water Disposed / Total Discharge of
Waste Water × 100%
Domestic Waste Removed
and Transported
means the quantity of waste collected and
transported to waste treatment sites (plants) in the reporting period.
Excrement Removed
and Transported means the quantity of excrement collected and transported to
waste treatment sites (plants) in the reporting period.
Harmless
Disposal of Domestic Waste means the total volume
of waste disposed by simple disposal sites and harmless waste disposal sits
(plants) in the reporting period. Simple disposal of waste means the total
volume of waste by simple landfills. Harmless waste disposal means the total
volume of waste disposed by harmless waste disposal sites (plants).
Rate
of Harmless Disposal of Domestic Waste means
the ratio of harmless waste disposal to the waste produced in the reporting
period. The formula is:
Rate of Harmless Disposal of Domestic
Waste = Harmless Waste Disposal / Waste Produced × 100%
In practical statistics, if it is hard to
get data on the volume of domestic waste produced, the volume removed and
transported may be used.
Chemical Oxygen Demand
(COD) means
the sum of COD emission in industrial waste water and the COD emission in
domestic waste water. It means the amount of oxygen required when chemical
oxidants are used to oxidize organic pollutants in water. A higher value of COD
corresponds to more serious pollution by organic pollutants.
SO2 Emission means the sum of
industrial SO2 emission and domestic SO2 emission in the
reporting period.
Industrial Solid Wastes
Utilized means the volume of solid
wastes from which useful materials can be extracted or which can be converted
into usable resources, energy or other materials by means of reclamation,
processing, recycling and exchange (including utilizing in the year the stocks
of industrial solid wastes of the previous year). Examples of such utilizations
include fertilizers, building materials and road materials.
Green Land in Parks means the green land open to the public,
with main function of strolling and relaxation, together with ecological,
landscaping and disaster preventing functions, and with more than 65% green
coverage, provided with multiple arbors, shrubs and ground-cover plants, along
with certain facilities and artistic layouts. They include parks, community
parks, street-side green land and other green land in gardens.
Green Land Coverage Rate means the ratio
of area of green land in a region to the area of the region in the reporting
period. The formula for calculating forest coverage rate is as follows:
Forest Area means the area
of forest where arbor trees grow with canopy density above 0.2 (and at 0.2) or
forest area with crown width more than
Live Stumpage Reserves mean the total
reserves volume of all trees on specific area of land, including trees in
forest, trees in sparse forest, scattered trees and trees planted by the side
of villages, farm houses and along roads and rivers.
Forest Reserves mean to the total
volume of timber of forest tree trunks growing on specific area of forest,
which are measured with cubic meters.
Number of Forest Fires means the number of all
fires occurring in forests, woods, woodlands in and outside the urban
districts, including forest fires, general fires, severe fires and super fires.