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Explanatory Notes on Main Statistical Indicators
 

Total Water Resources refers to total volume of water resources measured as run-off for surface water from rainfall and
recharge for groundwater in a given area, excluding transit water.

Surface Water Resources refers to total renewable resources which exist in rivers, lakes, glaciers and other collectors from
rainfall and are measured as run-off of rivers.

Groundwater Resources refers to replenishment of aquifers with rainfall and surface water.

Duplicated Measurement Between Surface Water and Groundwater refers to mutual exchange between surface water
and groundwater, i.e. run-off of rivers includes some depletion with groundwater while groundwater includes some replenishment
with surface water.

Water Supply refers to gross water supply by supply systems from sources to consumers, including losses during distribution.

Surface Water Supply refers to withdrawals by surface water supply system, broken down with storage, flow, pumping and
transfer. Supply from storage projects includes withdrawals from reservoirs; supply from flow includes withdrawals from rivers and
lakes with natural flows no matter if there are locks or not; supply from pumping projects includes withdrawals from rivers or lakes
with pumping stations; and supply from transfer refers to water supplies transferred from first-level regions of water resources or
independent river drainage areas to others, and should not be covered under supplies of storage, flow and pumping.

Groundwater Supply refers to withdrawals from supplying wells, broken down with shallow layer freshwater, deep layer
freshwater and slightly brackish water. Groundwater supply for urban areas includes water mining by both waterworks and own
wells of enterprises.

Other Water Supply Sources include supplies by waste-water treatment, rain collection, seawater desalinization and other
water projects.

Water Use refers to gross water use distributed to users, including loss during transportation, broken down with use by
agriculture, industry, living consumption and biological protection.

Water Use by Agriculture includes uses of water by irrigation of farming fields and by forestry, animal husbandry and fishing.
Water use by forestry, animal husbandry and fishing includes irrigation of forestry and orchards, irrigation of grassland and
replenishment of fishing pools.

Water Use by Industry refers to new withdrawals of water, excluding reuse of water within enterprises.

Water Use by Living Consumption includes use of water for living consumption in both urban and rural areas. Urban water
use by living consumption is composed of household use and public use (including services, commerce, restaurants, cargo
transportation, posts, telecommunication and construction). Rural water use by living consumption includes both households and
animals.

Water Use by Biological Protection includes replenishment of rivers and lakes and use for urban environment.

Waste Water Discharged by Industry refers to the volume of waste water discharged by industrial enterprises through all
their outlets, including waste water from production process, directly cooled water, groundwater from mining wells which does not
meet discharge standards and sewage from households mixed with waste water produced by industrial activities, but excluding
indirectly cooled water discharged (It should be included if the discharge is not separated with waste water).

Waste Water Directly Discharged into Sea refers to the volume of waste water directly discharged into sea through outlets
of enterprises situated by sea without going through municipal sewerage networks or any other intermediates or being affected
by any other water bodies.

Industrial Waste Water Meeting Discharge Standards refers to volume of industrial waste water discharge which, with or
without treatment, reaches national or local standards with regard to all pollutants.

Ratio of Industrial Waste Water Meeting Discharge Standards refers to percentage of industrial waste water meeting
discharge standards over total industrial waste water discharge. It is calculated as:

Ratio of industrial waste water meeting discharge standards = industrial waste water meeting discharge standards / total
industrial waste water discharge

Urban Non-industrial Waste Water Discharge refers to annual discharge of non-industrial waste water by urban
households. It is estimated by per capita coefficient using the formula:

Urban non-industrial waste water discharge = urban non-industrial waste water discharge coefficient urban non-agricultural
population 365

Volume of Chemical Oxygen Demand ( COD) Generated by Urban Non-industrial Waster Water refers to chemical
oxygen demand generated through the annual discharge of non-industrial waste water by urban households. It is estimated as:

Volume of chemical oxygen demand (cod) generated by urban non-industrial waster water = Coefficient of COD generated
through urban non-industrial waste water urban non-agricultural population 365

Chemical Oxygen Demand (COD) refers to index of water pollution measuring the mass concentration of oxygen consumed
by the chemical breakdown of organic and inorganic matter.

Industrial Waste Air Emission refers to discharge into atmosphere of waste air containing pollutants generated from fuel
burning and production process in enterprises within a given period of time. It is calculated at standard status (273K, 101325Pa)
as:

Industrial waste air emission = emission through fuel burning + emission through production process

SO 2 Emission through Non-industrial and Other Activities is calculated on the basis of consumption of coal by
households and other activities and the sulphur content of coal with the following formula:

SO 2 emission through non-industrial and other activities = consumption of coal by households and other activities sulphur
content 0.8 2

SO 2 Emission through Industrial Activities refers to volume of sulphur dioxide emission from fuel burning and production
process by enterprises during a given period of time. It is calculated as:

SO 2 emission through industrial activities = SO 2 emission from fuel burning + SO 2 emission from production process

Industrial Soot Emission refers to volume of soot in smoke emitted in process of fuel burning in premises of enterprises.

Soot Emission by Consumption and Others refers to net volume of soot emitted by fuel burning from all social and
economic activities and operation of public facilities other than industrial activities. It is calculated on the basis of coal
consumption by households and others.

Industrial Dust Emission refers to volume of dust emitted by production process of enterprises and suspended in the air for a
given period of time, including dust from refractory material of iron and steel works, dust from coke-screening systems and
sintering machines of coke plants, dust from lime kilns and dust from cement production in building material enterprises, but
excluding soot and dust emitted from power plants.

Industrial Solid Wastes Produced refers to total volume of solid, semi-solid and high concentration liquid residues produced
by industrial enterprises from production process in a given period of time, including hazardous wastes, slag, coal ash, gangue,
tailings, radioactive residues and other wastes, but excluding stones stripped or dug out in mining (gangue and acid or alkaline
stones not included). A stone is acid or alkaline depending on the pH value of the water below 4 or above 10.5 when the stone is
in, or soaked by, the water.

Hazardous Wastes refers to those included in the national hazardous wastes catalogue or specified as any one of the following
properties in the national hazardous wastes identification standards: explosive, ignitable, oxidizable , toxic, corrosive or liable to
cause infectious diseases or lead to other dangers.

Industrial Solid Wastes Utilized refers to 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. The information shall be collected by the producing units of the wastes.

Ratio of Industrial Solid Wastes Utilized refers to the percentage of industrial solid wastes utilized over industrial solid
wastes produced (including stocks of the previous years). It is calculated as:

Ratio of industrial solid wastes utilized = volume of industrial solid wastes utilized / (industrial solid wastes produced + stock of
previous years) 100%

Stocks of Industrial Solid Wastes refers to volume of solid wastes placed in special facilities or special sites for purposes of
utilization or disposal. The sites or facilities should take measures against dispersion, loss, seepage, and air and water
contamination.

Industrial Solid Wastes Disposed refers to quantity of industrial solid wastes which are burnt or placed ultimately in the sites
meeting the requirements for environmental protection and not salvaged or recycled (including disposition in the year of those
wastes of previous years). The disposition includes landfill (Safe landfills should be conducted for hazardous wastes),
incineration, containment spaces, deep underground disposal, backfill in mining pits and disposal at sea.

Industrial Solid Wastes Discharged refers to volume of industrial solid wastes discharged by producing enterprises to
disposal facilities or to other sites. The wastes exclude stones stripped or dug from mining (gangue and acid or alkaline waste
stones not included).

Output Value of Products Made from Waste Gas, Waste Water and Solid Wastes refers current value of products with
waste gas, waste water and solid wastes as main materials of production. Products sold and ready to sell shall be included while
those produced for own use shall not be included.

Consumption Wastes Transported refers to volume of consumption wastes collected and transported to disposal factories or
sites. Consumption wastes are solid wastes produced from urban households or from service activities for urban households, and
solid wastes regarded by laws and regulations as urban consumption wastes, including those from households, commercial
activities, markets, cleaning of streets, public sites, offices, schools, factories, mining units and other sources.

Ratio of Consumption Wastes Treated refers to consumption wastes treated over that produced. In practical statistics, as it
is difficult to estimate, the volume of consumption wastes produced is replaced with that transported. It is calculated as:

Ratio of consumption wastes treated = consumption wastes treated / consumption wastes produced ×100%

Area under Land Survey   refers to the total area of land, under the land survey, within the jurisdiction of the administrative
region, including land for agriculture use, land for construction and unused land.

Land for Agriculture Use refers to land directly used for agriculture production, including land for cultivation, gardening,
forests, herbage and other agriculture activities.

Cultivated Land at Beginning (End) of the Year refers to total area of cultivated land within the geographic area of
statistical survey at the beginning (end) of the year.

Increase of Cultivated Land during the Year   refers to the increase of cultivated land during the year as a result of land
preparation, reclamation, new development, adjustment of agriculture structure and other reasons.

Decrease of Cultivated Land during the Year   refers to the decrease of cultivated land during the year as a result of
adjustment of agriculture structure, construction projects, natural disasters, conversion for ecological purpose, and other reasons.

Area of Man-made Forests   refer to the area of stable growing forests, planted manually or by airplanes, with a survival rate
of 80% or higher of the designed number of trees per hectare, or with a canopy density of or above 0.20 after 3-5 years of
manual planting or 5-7 years of airplane planting.

Total Area of Afforestation refers to the total area of land suitable for afforestation , including barren hills, idle land, sand
dunes, rain for green land, on which acres of arbores or bushes are planted through manual planting, airplane planting, plant
seedlings, etc. in accordance with the required density standards of the Technical Procedures of Afforestation , and with a survival
rate of over 85% in line with the Implementing Rules of the Forest Law of the People Republic of China (or a survival rate of 75% in
areas with less that 400 mm of annual rainfall and without irrigation facilities). Included in the this category are trees planted
alone the roadsides, riversides, or next to houses that occupy an area over 0.066 hectares, or where more than 4 lines of trees
are planted. Total area of afforestation is further classified by ownership (state-owned, state-collective, collective or private), by
approach of planting (manual, airplane), and by type of forests (timber, by-products, protection, fuel, special use, etc.).

Timber Forests   refer to forests which is mainly for the production of timber, including bamboo groves planted to harvest
bamboos.

Fast-growing Timber Forests   refer to forests intensively planted and managed through scientific planning to produce fast-
growing, high quality timber product. In these forest bases, Superior species of trees with shorter growing span, good quality and
high economic value are planted and grow under various technological measures so as to meet the standards set by the Ministry
of Forest (annual growth of over 0.6 cubic metres per 0.066 hectares of trees) of by the provincial authorities.

By-product Forests   refer to forests that mainly produce fruits, nuts, edible oil, beverages, indigents, raw materials and
medicine materials. By-product forests are planted to harvest the fruits, leaves, bark or liquid of trees, and consume them as
food or raw materials for the manufacturing industry, such as tea-oil trees, tung oil trees, walnut trees, camphor trees, tea
bushes, mulberry trees, fruit trees, etc.

Protection Forests    refer to forests, trees and bushes planted mainly for protection or preservation purpose, including water
resource conservation forests, water and soil conservation forests, windbreak and dune-fixing forests, farmland and pasture
protection forests, riverside protection forests, roadside protection forests, etc.

Fuel Forests   refer to forests planted mainly for fuels.

Forests for Special Purpose    refer to forests planted mainly for national defence , environment protection or scientific
experiments, including national defence forests, experimental forests, mother-tree forests, environment protection forests,
scenery forests, trees in historical or scenic spots, forests in natural reserves.

Project on Preservation of Natural Forests   is the Number One ecological project in China 抯 forest industry that involves
the largest investment. It consists of 3 components: 1) Complete halt of all cutting and logging activities in the natural forests at
the upper stream of Yangtze River and the upper and middle streams of the Yellow River. 2) Significant reduction of timber
production of key state forest zones in northeast provinces and in Inner Mongolia . 3) Better protection of natural forests in other
regions through rehabilitation programmes .

Projects on Converting Cultivated Land to Forests and Grassland (Grain for Green Projects)   aiming at preventing
soil erosion in key regions, these projects are ecological construction projects in the development of forest industry that have the
widest coverage and most sophisticated procedures, with strong policy implications and most active participation of the people.

Projects on Protection Forests in North China and Yangtze River Basin    covering the widest areas in China with a rich
variety of contents, these projects aim at solving the problem of sand and dust in northeastern China, northern China and
northwestern China and the ecological issues in other areas. More specifically, they include phase IV of project on North China
protection forests, phase II of project on protection forests at the middle and lower streams of Yangtze River and at the Huihe
River and Taihu Lake valley, phase II of project on coastal protection forests, phase II of project on Pearl River protection
forests, phase II project on greenery of Taihang Mountain and phase II projects on greenery of plains.

Projects on Harnessing Source of Sand and Dust in Beijing and Tianjin these Beijing-ring projects aim at harnessing
the sand and dust weather around Beijing and its vicinities. As the key to the development of Beijing- Tianjin ecological zone,
these projects are of particular importance as it concerns the image of China 抯 capital city and the whole country.

Projects on Preserving Wild Animals and Plants and on Construction of Nature Reserves   aiming at gene
preservation and protection of bio-diversity, nature and wetlands, these projects look into the future with strategic perspective
and are integrated with international trends.

Projects on Fast-growing Timber Forests Bases in Key Regions   these are key projects for the forest industry to
strengthen its capacity in supplying more timber and forest by-products.

Wetlands    refer to marshland and peat bog, whether natural or man-made, permanent or temporary; water covered areas,
whether stagnant or flowing, with fresh or semi-fresh or salty water that is less than 6 metres deep at low tide; as well as coral
beach, weed beach, mud beach, mangrove, river outlet, rivers, fresh-water marshland, marshland forests, lakes, salty bog and
salt lakes along the coastal areas.

Mangrove   refer to evergreen woody plants or plant communities in tropical or sub-tropical zones which live between the sea
and the land in areas which are inundated by tides.

Nature Reserves   refer to certain areas of land, waters or sea that are representative in natural ecological systems, or are
natural habitats for rare or endangered wild animals or plants, or water conservation zones, or the location of important natural or
historic relics, which are demarked by law and put under special protection and management. Nature reserves are designated by
the formal approval of governments at and above county level (including those approved by relevant departments or
“revolutionary committees” before 1980). Scenic spots and cultural preservation zones are not included.

Ecological Demonstration Zones    refer to administrative areas approved by the environment protection agencies of central
and provincial governments and established by provincial, prefecture or county governments in line with the approved programme
for ecological demonstration zones. They include those evaluated and accepted by the environment protection agencies of central
and provincial governments and those under pilot development stage.

Landslides    refer to the geological phenomenon of unstable rocks and earth on slopes sliding down along certain soft surface
as a result of gravitational force. Role of surface water and underground water, and destruction of the stability of slopes by
irrational construction work are usually main factors triggering the landslides. Several damages are often caused by landslides in
open mining, in water conservancy projects, and in the construction of railways and highways.

Collapse    refers to the geological phenomenon of large mass of rocks or earth suddenly collapsing from the mountain or cliff
as a result of gravitational force. Usually caused by weathering of rocks, permeance of rain or earthquakes, collapse often
destructs buildings and blocks river course or transport routes.

Mud-rock Flow refers to the sudden rush of flood torrents containing large amount of mud and rocks in mountainous areas.
It is found mostly in semi-arid hills or plateaus. High and precipitous topographic features, loose soil mass, heavy rains or
melting water contribute to the mud-rock flow.

Land Subside    refers to the geological phenomenon of surface rocks or earth subsiding into holes or pits as a result of natural
or human factors. Land subside can be classified as karst subside and non- karst subside.

Environment Pollution and Destruction Accidents    refer to sudden accidents, due to economic or social activities that are
in contrast to environment protection laws or due to unforeseen factors or natural disasters, that lead to the environment
pollution, the destruction of protected wild animals, plants or nature reserves, the damage to human health, the economic and
property losses, and the negative impact on the society.

Investment in Environment Pollution Harnessing Projects refers to the proportion of investment in fixed assets in the
total investment in harnessing industrial pollution and in the construction of urban environment infrastructure facilities. It includes
investment in harnessing sources of industrial pollution, investment in environment protection facilities designed concurrently with
construction projects, and investment in urban environment infrastructure facilities.

Investment in Fixed Assets for Afforestation refers to the investment in capital construction and updating projects in
afforestation during the reference period.

Unspent Capitals from Last Year   refer to capitals from the last year that have not been invested in the fixed assets,
including value of materials that have not been used yet, the value of equipment yet to be installed, as well as cash in hand and
bank deposits.

Completed Investment during the Year    reflecting the actual size of investment completed during January 1 and
December 31 of the reference year, this indicator is important in estimating investment efficiency and in making annual analysis
of the performance of the national economy.

 
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