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Scientia Silvae Sinicae ›› 2014, Vol. 50 ›› Issue (1): 82-87.doi: 10.11707/j.1001-7488.20140113

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Compatibility of Stand Volume Model for Chinese Fir Based on Tree-Level and Stand-Level

Zhang Xiongqing, Zhang Jianguo, Duan Aiguo   

  1. Key Laboratory of Tree Breeding and Cultivation of State Forestry Administration Research Institute of Forestry, CAF Beijing 100091
  • Received:2013-02-19 Revised:2013-03-20 Online:2014-01-25 Published:2014-01-25
  • Contact: 张建国

Abstract:

It is important to model stand volume of Chinese fir(Cunninghamia lanceolata)for improving forest management and revealing forest growth law. According to the different simulation objects, stand volume of Chinese fir can be predicted from tree level and stand level. In this study, the two level models were combined by forecast combination. Forecast combination combines information from different models, disperse errors from different models, and then improve forecast performance. In this paper, weights of different models in the forecast combine model were calculated by optimal weight. Based on the periodic data of the Chinese fir in Jiangxi Province, forecast combination was used to estimate Chinese fir stand volume from tree-level model, and stand-level model. The results showed that the forecast combination for predicting Chinese fir stand volume outperformed over tree-level model, and stand-level model respectively. It also improved the compatibility of Chinese fir stand volume growth models from different levels of models and provided a method for integration of Chinese fir stand volume.

Key words: stand volume, compatibility, forecast combination, Chinese fir (Cunninghamia lanceolata)

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