Optimum stand density of Chinese pine forests in Taihang limestone mountains, Shanxi Province

Abstract

Data analysis was made for 54 stands of Chinese pine forests for soil and water conservation and timber. The regression equations were drawn up on forest density and different rafter timber and bush coverage. Based on those equations, the number of rafter timber trees, storage, number of non-rafter timber trees, stand volume and the output value were calculated for six different forest densities ranged from 1250 to 6600 trees/hm². According to the economic and ecological criteria, the optimum density for Chinese pine forests was determined as 1650 trees/hm².

Keywords

Taihang Mountains / Limestone mountains / Chinese pine / Water and soil conservation / Timber forest / Forest density

References

[1] Shaofeng Jia et al. Natural erosion and erosion acceleration in loess plateau estimated by vegetation Water and soil conservation Reports, 1995, 15(4): 25-32.

[2] Liu, X.Q.et al. 1991. Site classification and growth prediction of man-made Chinese pine forests in the west side of Taihang Mountains. Shanxi Forest Technology, (2)

[3] Kuijian Lang et al. LBM-PC series Programme, 1989 Beijing: China Forestry Publication Press

[4] Shanxi Standard Bureau. 1985. One way volume table for artificial Chinese pine forests. Shanxi enterprise criterion

[5] Shen Z. et al. Site classification and evaluation of man-made Chinese pine forests in Southeast Shanxi limestone mountainous area Forestry Science, 1996, 32(1): 16-23.