Forest Resources and Estimated Resin Production of Pines in China——Based on the Data of Successive Nation-Wide Inventory of Forest Resources
Attempt was made in this study to estimate forest resources and resin production of pines in China, based on the data of successive nation-wide forest inventory which have officially been published. The objective of the study is to approach a scientific methodology to estimate the capacity of pine resin production in the country. Pine resources which could be used for resin production was calculated at the basis of age-classes and the resin production was estimated according to the number of individuals fallen into the category of age-class available for resin collection. The area of pine forest resource available for resin collection and the total amount of resin production were estimated to be about 316.65 × 10~4 hm 2 and 162.5 × 10~4 t·a~(-1),respectively. The distribution of the resin resources in each province was also sown in the research results.