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FOREST RESOURCES WANAGEMENT ›› 2020, Vol. 0 ›› Issue (1): 30-37.doi: 10.13466/j.cnki.lyzygl.2020.01.005

• Scientific Research • Previous Articles     Next Articles

Developing Tree-level and Stand-level Growth Rate Models for Major Tree Species in Hebei Province

Weisheng ZENG1, Yingchun CAO2, Xinyun CHEN1, Lianqing ZHAO2   

  1. 1. Academy of Forest and Grassland Inventory and Planning,National Forestry and Grassland Administration,Beijing 100714
    2. Hebei Forest Inventory and Planning Institute,Shijiazhuang 050051
  • Received:2019-11-11 Revised:2019-12-03 Online:2020-02-28 Published:2020-05-18

Abstract:

Based on the data of permanent plots measured in 2001,2006,2011,2016 in Hebei province from the 6 th to 9 th national forest inventories of China,tree-level dbh(diameter at breast height)growth rate and volume growth rate models for 18 tree species and stand-level volume growth rate models for 12 tree species group were developed using nonlinear regression method.The results show that the MPEs(mean prediction errors)of the tree-level models are almost less than 3%,and the MPSEs(mean percent standard errors)are almost less than 10% for dbh growth rate models and less than 20% for volume growth rate models.For stand-level volume growth rate models,the MPEs are almost less than 5%,and the MPSEs are almost less than 25%.The models developed in this study can provide technical basis for implementing annual updating of forest resource data in Hebei province.

Key words: growth rate of diameter, growth rate of volume, tree-level model, stand-level model, Hebei

CLC Number: