Modelling height development of mature Nothofagus obliqua

FOREST ECOLOGY AND MANAGEMENT

卷:229

Article

Salas, Christian ; García, Oscar

关键词: growth models;    breast-height-age;    stem-analysis;    site index;    Stochastic differential equations;    Roble;    Chile;   

DOI  :  10.1016/j.foreco.2006.04.015

来源: Elsevier

【 摘 要 】

We used stem-analysis data from 60 to 100 years-old second-growth stands, and single-point observations in 260-460 years-old trees, to study and model height development of Nothofagus obliqua (roble). The data covers a much wider range of ages than previous work on this species. A stochastic differential equation approach facilitated the estimation and comparison of alternative model variants based on the Richards equation. A number of methodological issues in the application of stem-analysis techniques were examined. It was found that breast-height-age can improve the reliability of site quality assessment and growth projections, compared to the total or stump age currently used. Best results were obtained with a polymorphic model fitted to the stem-analysis observations, conditioning the asymptote to be compatible with the old-growth tree measurements. (c) 2006 Elsevier B.V All rights reserved.

【 授权许可】

Free