1. Land for forestry use: Land specially used for forestry production, including forested land, shrub land, open forest land and land without any trees such as land suitable for afforestation and non-forested land.
2. Forested land: Land with the growth of various categories of forests (native forest or plantation), bamboo forest and economic forests for special purposes (arbour or shrub). Forested land is an important component of forest resources.
3. Open forest land: One type of land for forestry use. Land with the growth of young forest stands between the age groups of I and II, with a density between 0.1 and 0.3. If the forest stand belongs to the III age group, the requirement for density should be between 0.1-0,2.
4. Land suitable for afforestation: One type of land for forestry use. All slash land after felling, burning, open land in forests and all barren mountains and land which are not suitable for planting agricultural corps, but suitable for the growth of trees.
5. Standing stock: living and standing trees in forest stands. The standing stock counted in forest surveys and statistics also include trees on open forest lands and separate single trees.
6. Forests producing food and edible oil: One type of economic forests. Forests with the main purpose of collecting fruit or seeds which can be used for food or for the extraction of edible oil.
7. Sawntimber: Timber after initial mechanical processing, with width less than three times of thickness.
8. Forest fire occurrence rate: The number of forest fire occurrence over 100,000 hectares of forests.
9. Forest fire damage rate: The proportion of area affected by forest fire to the total forest area shown in x/1000.
10. Forest fire control rate: Fire affected forest area each time. (ha/time)
11. Checked out rate of forest fire: The percentage of the number of forest fire with the cause investigated and dealt with to the total number of forest fire.
12. Over-mature forests: Forest stands one age group older than harvesting age.
13. Mature forests: Forest stands which have reached harvesting age or within one age group beyond harvesting age.
14. Lumber: Logs after sawing, such as sawntimber.
15. Low productivity forests: Forest stands with low growth volume or obvious low unit production. One type of low value forest stand.
16. Forest stand resources: Forest resources excluding economic forests and bamboo forest resources.
17. Forest category: Forest classification unit by benefits. The Forest Law of People's Republic of China divides forests into five categories: protection forests, timber forests, economic forests, fuelwood forests and special purpose forests.
18. Special purpose forests: Forests with special purposes of scientific research or environmental protection.
19. Economic forests: Forests with the purpose of producing fruits, edible oil, industrial raw materials or medicine.
20. Silviculture: One chain in forestry production. Cultivate plantations on barren mountains and land suitable for afforestation, and manage existing forests are both within the range of silviculture.
21. Area of forest stands: Area of forested land excluding economic forests and bamboo forests.
