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Generalized nonlinear height–diameter models for a Cryptomeria fortunei plantation in the Pingba region of Guizhou Province, China
Web Ecology ( IF 2.3 ) Pub Date : 2018-02-20 , DOI: 10.5194/we-18-29-2018
Zongzheng Chai , Wei Tan , Yuanyuan Li , Lan Yan , Hongbo Yuan , Zhaojun Li

Abstract. The relationship between height and diameter (H-D) is an important component in forest growth and yield models, and a better understanding of the relationship will improve forest monitoring, management, and biomass estimation. Sixteen nonlinear growth functions were fitted to H-D data for 1261 trees from a Cryptomeria fortunei plantation in the Pingba region of Guizhou Province, China. Of the 1261 trees, 80 % were randomly selected for model calibration, while the remaining trees were reserved for model validation. All models were evaluated and compared by means of multiple-model performance criteria. Although all 16 models showed a good fit to the dataset and each of them accounted for more than 75 % of the total variation in height, a large difference in asymptotic estimates was observed. The Chapman–Richards, Weibull, and Naslund models were recommended for C. fortunei plantations, due to their satisfactory height prediction and biological interpretability.
更新日期:2018-02-20
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