Disposable income of households refer to the households income sum can be used to  final consumption expenditure and savings during the period of investigation, Disposable income including cash and in kind. According to sources of income, disposable income including: the wage income, net operating income, net property income,net transfer income and net rent income from owned housing. The formula for computing:

Disposable income of households = the wage income+ net operating income+net property income+net rent income from owned housing

Net operating income = income - operating costs and depreciation of productive fixed assets - net taxes on production (production tax - production subsidies)

Net property income = income from property - property expenditure

The transfer of net income = income from transfer - transfer expenditure

Expense on Consumption of Households refers to  meet

the familydaily life consumption of all expenditure needs,

including for the consumer spending and for service consumption

expenditure. According to different purposes,consumption can be

divided into tobacco and food, clothing, housing, daily necessitiesand

services, transportation and communication, education, culture

and entertainment,health care, the other eight articles and

services. According to different sources,consumption can be

divided into cash consumption, real consumer spending

(includingself occupied, from the unit, from the government

and other social organizations).

Population of Urban Households   refer to members of the household living and sharing economically together. All income and expenditure of the population of the household are included in the income and expenditure of the household.

Number of Dependents per Urban Employee   refers to the ratio between number of persons in urban households and the number of dependents.

Total Income of Urban Households   refers to the sum of wage and salary, net business income, income from properties, and income from transfers of members of the households, excluding income from selling of properties and income from borrowings.

Disposable Income of Urban Households refers to the actual income at the disposal of members of the households which can be used for final consumption, other non compulsory expenditure and savings. This equals to total income minus income tax, personal contribution to social security and sample household subsidy for keeping diaries. Following formula is used:

Disposable income=total household income-income tax-personal contribution to social security-sample household subsidy for keeping diaries

Total Expenditure of Urban Households refer to all expenditure of the households except expenditure on leading. It includes expenditure on consumption, on purchasing or building houses, on transfers, on properties and on social security.

Consumption Expenditure of Urban Households   refers to total expenditure of the sample households for consumption in daily life,including expenditure on eight categories such as food, clothing, household appliances and services, health care and medical services, transport and communications, recreation, education and cultural services, housing, miscellaneous goods and services.

Engel Coefficient   refers to the percentage of expenditure on food in the total consumption expenditure, using the following formula:

Engel Coefficient=(expenditure on food/total consumption expenditure)¡Á100%

Rural Households   refer to resident households in rural areas residing for nearly or more than half-year. Migrated households residing in the current addresses for nearly or more than half-year with their household registration in other places are included in the resident households of their current addresses. For households with their household registration in one place but all members of the households moving away for living in another place for over half-year, they will not be included in the rural households of the area where they are registered, irrespective of whether they still keep their contracted land.

Rural Resident Population   refers to population staying at home permanently or for over 6 months during a year and sharing life economically with the household. Members of the household staying away from the household for over 6 months but keeping a close economic relation with the household by sending the majority of income to the household are regarded as resident population of the household. Government staff and workers or retirees living as close members of the household are also considered as resident population. However, servicemen, students of secondary technical schools or schools of higher education and persons with stable jobs and residence outside the household (excluding those visiting relatives or seeking medical service) are not included as resident population of the household. Resident population is used in calculating income, consumption, accumulation on per capita basis of rural households and in analyzing composition of rural households.

Rural Full/Semi Labour Force Full labour force   refers to persons capable of work, aged 18-50 for males and 18-45 for females. Semi labour force refers to persons capable of work, aged 16-17 and 51-60 for males and 16-17 and 46-55 for females. Persons at their working ages but not capable of work are not to be included as labour force. Persons not at working ages but participating regularly in work are included in semi labour force. For staff and workers as resident population of the household, they are included as full or semi labour force of the household if they are in the labour force.

Rural Households Income from Wages and Salaries   refers to income from labour earned by the members of rural households employed by other units or individuals.

Rural Households Income from Household Operations   refers to income by the rural households as units of production and operations. Operations by rural households are classified by economic activities as agriculture, forestry, animal husbandry, fishery, manufacturing, construction, transportation, post and telecommunications, wholesale, retail and catering, social service, culture, education, health, and other household operations.

Rural Households Income from Properties   refers to the income received as returns by owners of financial assets or tangible nonª²productive assets by providing capitals or tangible nonª²productive assets to other institutional units.

Rural Households Income from Transfers   refers to the receipt by rural households and their members of goods, services, capitals or rights of assets without giving or repaying accordingly, excluding capitals provided to them for the formation of fixed assets. In general, it refers to all income received by rural households through redistribution.

Rural Households Net Income   refers to the total income of rural households from all sources minus all corresponding expenses. The formula for calculation is as follows:

Net income=total income-household operation expenses-taxes and fees depreciation of fixed assets for production

Net income is mainly used as input for reproduction and as consumption expenditure of the year, and also used for savings and non-compulsory expenses of various forms. ¡°Per capita net income of farmers¡± is the level of net income averaged by population which reflects the average income level of rural households in a given area.