Value-added of Farming, Forestry, Animal Husbandry and Fishery refers to the value-added of goods produced or services provided by farming, forestry, animal husbandry, fishery in a given period of time. It shows the final results of the activities of production and management of agriculture and its contributions to the society.
    The value-added of agriculture is calculated with two approaches:
    (1) Production approach is a method from the production angle, i.e. total output of agriculture minus intermediate consumption of agriculture. The value-added of agriculture is usually calculated with the production approach as no complete accounting records of the rural households are available;
    (2) Distribution approach is a method from the distribution angle, i.e. various incomes from the activities of production and management of the productive units of agriculture without intermediate consumption, including incomes of the rural laborers, welfare funds, profit and tax, depreciation of fixed assets and major overhaul and others.
    Gross Output Value of Agriculture refers to the total volume of products of farming, forestry, animal husbandry, and fishery and the value of various services supporting the production of farming, forestry, animal husbandry and fishery in monetary terms, which reflects the total scale and total results of farming, forestry, animal husbandry and fishery production during a given period of time. It is an important indicator to observe the production level and development speed of farming, forestry, animal husbandry and fishery, to study the internal structure of farming, forestry, animal husbandry and fishery, and to review the proportionate relationship of farming, forestry, animal husbandry and fishery to industry, to national construction and to people’s life. It is also the foundation for calculating the labor productivity and value-added of farming, forestry, animal husbandry and fishery.
    Generally, the gross output value of farming, forestry, animal husbandry and fishery is calculated with the production approach. Where applicable, the gross output value of each single product is obtained by multiplying the output of each product by its price. These values are then summed up to obtain the output value of each sector. The sum of output values of all sectors is the gross output value of farming, forestry, animal husbandry and fishery.
    Area of Regularly Cultivated Land refers to farmland among the total land resources which is exclusively used for farming and is under regular cultivation with harvest in normal years. Included are currently cultivated land, land that has been abandoned or put in idle for less than 3 years and is available for recultivation at any time, newly-claimed land that has been put into cultivation for more than 3 years, and ditches, trenches, roads, and ridges with a width of less than 1 meter. Excluded under this category are steep slope land over 25 degrees under temporary cultivation, stretches or scattered plots temporarily claimed along river bends, lake sides or banks of reservoirs, as well as land that has been designated under the “Green for Grain” programmes of the state and provincial governments but is still temporarily under cultivation. Regularly cultivated land is classified into basic farmland and odd pieces of land used for cultivation.
    Sown Area of Crops refers to area of land sown or transplanted with crops at the end of a production season, which reflects the scale of crops and the use of cultivated area. It is imperative to calculate the sown area correctly in order to organize the production activities of agriculture, calculate the yield of crops, study the composition and distribution of crops and work out technical measures to increase production.Sown area within a statistical year refers to area of sown land with a harvest of crops within the calender year (from Jan.1 to Dec.31), including all area sown in the autumn and winter of the preceding year, in the spring and summer of the current year, and in the late autumn in southern regions, provided that it is harvested within the current year.
    Total Output of Crops refers to the total output of farm crops of various kinds during a given period of time (usually a year). It is the basic figure to examine the production results of agriculture, make overall arrangements in the life of urban and rural households, study the proportionate relationships between production, accumulation and consumption and work out a plan of national economy. It covers the output of crops in both cultivated and uncultivated area. Crops with an extensive reaping period beginning in the winter of the current year are included in the total output of crops of the current year, even if harvest is extended until the spring of the following year.
    The total output of crops refers to the total output of the whole society, including the output from state-owned units (e.g. state-owned farms), collective-owned units and contracted land of rural households as well as plots for family use, farms owned by rural family members of staff and workers of industrial and mining enterprises and others.
    The total output of crops is the output of dry crops in storage. In areas with delayed threshing, drying and storing, it is converted from the output of undried crops according to certain rates.
    Total Power of Farm Machinery refers to total mechanical power of machinery used in farming, forestry, animal husbandry, and fishery, including ploughing, irrigation and drainage, harvesting, processing, transport, plant protection, stock breeding, forestry and fishery. The power of internal combustion engines is calculated in horsepower, whereas the power of electric motors is converted into horsepower.