Journal cover Journal topic
Web Ecology An open-access peer-reviewed journal
Journal topic
Volume 18, issue 1 | Copyright
Web Ecol., 18, 29-35, 2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Standard article 20 Feb 2018

Standard article | 20 Feb 2018

Generalized nonlinear height–diameter models for a Cryptomeria fortunei plantation in the Pingba region of Guizhou Province, China

Zongzheng Chai1, Wei Tan1, Yuanyuan Li2,3, Lan Yan1, Hongbo Yuan4, and Zhaojun Li4 Zongzheng Chai et al.
  • 1Research Center of Forestry Information Engineering, College of Forestry, Guizhou University, Guiyang, Guizhou 550025, PR China
  • 2State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, PR China
  • 3University of Chinese Academy of Sciences, Beijing 100049, PR China
  • 4Forestry Bureau of Pingba District, Pingba, Guizhou 561100, PR China

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 Näslund models were recommended for C. fortunei plantations, due to their satisfactory height prediction and biological interpretability.

Download & links
Publications Copernicus
Short summary
Many years of forestry practice have confirmed that Cryptomeria fortunei can be cultivated in central Guizhou Province of China on a large scale, and this will continue due to its good growth performance and excellent development potential. The generalized height–diameter models proposed in the current paper will help forest managers to reduce costs and save time during the inventory, monitoring, and management for these forests.
Many years of forestry practice have confirmed that Cryptomeria fortunei can be cultivated in...