- Location of forests, their distribution and area: A map of forests in general and by functional classificationin particular is required. In the productive forests, maps of forest areas by forest types, by productivity of sites and bymaturity classes, etc are necessary to assess the yield of forests.
- Growing stock in the production forests: Inventory of trees by species and by diameter classes is required. This aids in estimating volume by location so that management plans could be drawn or industrial plan may be prepared.
- Information about various factors affecting production: The information on site, diameter and height, increment, age, timber quality and also about areas where new forests could be raised is necessary.
Tom Beckley