GEO Brasil - UNEP

annex 1 - statistics - metadata
annex 1
the first one (beginning of the period). This result was then divided by the time
gone by between censuses (5 years for the rates of the period from 1970 to 1985
and 10.5 years for the period from 1985 to 1995/1996) and multiplied by 100.
3) Changes in the periodicity of the Agricultural and Cattle Raising Censuses,
carried out every 5 years during the period between 1970 and 1985 and in 10.5-year
intervals between 1985 and 1995/1996, resulted in the differences in calculation
registered in the comment above.
4) The Agricultural and Cattle Ranching Census gathers information on areas
where there are forest plantations by interviewing individuals (owners, leasees,
administrators, etc.) responsible for rural establishments.
5) The negative variation rate obtained for the period between 1985 and 1995/1996
corresponds to the reduction of the total area of forest plantations in Brazil
during this period.
Source IBGE - Agricultural and Cattle Ranching Census, 1970, 1975, 1980, 1985, 1995/
1996.
Observations
1970 - 1984 - rates represent the average for 5-year periods.
1985 - 1995 - rates represent average values for a period of 10.5 years.
A.2.2 – Forest Production
18 Timber Production
Unit: 1000 m³
Concept
Total production considering cut tree trunks, bark and extremities sawed, not
intended for use as fuel.
Comments
The data presented represent total timber production not only from native forests
but also from planted forests.
The data referring to native forests may be underestimated due to irregular
activities common to the vegetal extraction sector.
Source IBGE –Vegetal and Forestry Extraction Production, vol. 5 to 14.
Observations
19 Coal Production
Unit:
t
Concept
Sum of the production of vegetal coal of all native and forestry vegetation species.
Vegetal coal is the fuel that results from partial burning of wood in closed spaces
(e.g.: ovens).
Comments
The data presented refers to the production obtained from native and planted
forests.
The data referring to native forests may be underestimated due to irregular
activities common to the vegetal extraction sector.
Source IBGE - Vegetal and Forestry Extraction Production, vol. 5 to 14.
Observations
20 Firewood Production
Unit: 1000m³
Concept
The production of firewood is the total amount of raw wood obtained from
branches and tree trunks of an adequate size for use as fuel in ovens, boilers,
stoves, etc.
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