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FOREST RESOURCES WANAGEMENT ›› 2016›› Issue (4): 41-46.doi: 10.13466/j.cnki.lyzygl.2016.04.009

• Scientific Research • Previous Articles     Next Articles

Study on the Correlation among Age,DBH and Tree Height of the Pseudotsuga sinensis in Qizimei Mountain Nature Reserve

XIONG Binmei1, WANG Zhengxiang1,2,3, LI Zhongqiang1, ZHANG E1, TIAN Kai1, LI Tingting1, LI Ze1, SONG Chunlu4   

  1. 1. College of Resources and Environmental Science,Hubei University,Wuhan Hubei 430062,China;
    2. Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources,Wuhan 430062;
    3. Hubei Province Key Laboratory of Regional Development and Environment Response,Wuhan 430062,China;
    4. Area Management Bureau of the Qizimei Mountains Natural Reserve,Xuanen,Hubei 445500,China
  • Received:2016-03-16 Revised:2016-05-31 Online:2016-08-28 Published:2020-11-04

Abstract: A survey was conducted in Qizimei Mountains Nature Reserve about the Pseudotsuga sinensis communities to further analyze the growth of regular trees and better protect the rare species.Meanwhile,seven common regression models were applied to study the correlation of the DBH and age,tree height and age,tree height and DBH of the Pseudotsuga sinensis.The results showed that there is a positive correlation between DBH and age,tree height and age of the Pseudotsuga sinensis,as well as DBH and tree height.The cubic equations perform the best for describing the relationship between age and DBH,age and height.The equation are:y=-0.0001x3+0.011x2+0.179x+4.44 and z=0.00007x3-0.015x2+1.105x-10.81;Moreover,the best correlation model is z=1.778y0.659 for modeling of tree height and DBH.The optimal models were tested for reliability and the result shows there is no significant difference between predicted and observed values(P>0.05),which demonstrated the best models can be used to estimate the value of age,tree height and DBH of the Pseudotsuga sinensis.Furthermore,the study can further provide theoretical support for the regional research on the growth of the regular Pseudotsuga sinensis and the prediction of the forest volume.

Key words: Pseudotsuga sinensis, age, diameter at breast height, tree height, correlation, Qizimei Mountains Nature Reserve

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