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

doi:10.13466/j.cnki.lyzygl.2016.04.009

Abstract

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=1.778y^0.659 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

CLC Number:

S757

XIONG Binmei, WANG Zhengxiang, LI Zhongqiang, ZHANG E, TIAN Kai, LI Tingting, LI Ze, SONG Chunlu. Study on the Correlation among Age,DBH and Tree Height of the Pseudotsuga sinensis in Qizimei Mountain Nature Reserve[J]. FOREST RESOURCES WANAGEMENT, 2016, 0(4): 41-46.

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