Growth and yield models for Dahurian larch plantations

Abstract

Several equations were selected using nonlinear regression analysis for setting up growth and yield models of Dahurian larch (Larix gmelinii Rupr.) plantations. Data of 405 stem analysis trees were collected from 336 temporary plots throughout the Daxing'an Mountains. Results showed that the Richards equation was the best model for estimating tree height, stand mean height and stand dominant height by age; the Power equation was the fittest model for predicting tree volume by DBH and tree height, and the Logarithmic stand volume equation was good for predicting stand volume from age, mean height, basal area and other stand variables. These models can be used to construct volume tables, site index table and other forestry tables for Dahurian plantations.

Keywords

Growth and yield model / Richards equation / Dahurian larch Plantations / Larix gmelinii

References

[1] Avery T.E., Burkhart H.E. Forest measurements, 1983 Third edition Harbin: Mcgrow Book Company 275-304.

[2] Burkhart, H.E., Cao, Q.V. and Ware, K.D. 1981. A comparison of growth and yield prediction models for loblolly pine. Virginia Poly. Inst. And State Univ. Pub. FWS-2-81, 59pp

[3] Davis L.S., Jhonson K.N. Forest Management, 1987 Third edition Harbin: McGrow Book Company 95-167.

[4] Yiyin Jiang Growth and growth models of Korean pine Journal of Northeast Forestry University, 1985, 13(2): 5-14. (in Chinese)

[5] Changsheng Li Forest growth and yield models External Forestry, 1988, 1: 20-24.

[6] Marquardt D.W. An algorithm for least squares estimation of nonlinear parameters Jour. Soc. Indust. Appl. Math., 1963, 11: 431-441.