角规点上测定林分蓄积的形点法

›› 1997, Vol. 33 ›› Issue (zk1): 133-138.

角规点上测定林分蓄积的形点法

徐祯祥钱振国韩芝隆刘建生

河南省林业科学研究所郑州450002；郑州工业大学郑州450002；河南省林业勘察设计院郑州450001

收稿日期:1996-04-12 修回日期:1900-01-01 出版日期:1997-04-25 发布日期:1997-04-25

THE METHOD OF FORM POINT FOR MEASURING STAND VOLUME ON THE POINT OF ANGLE GAUGE

Xu Zhenxiang,Qian Zhenguo,Han Zhilong,Liu Jiansheng

Forest Sientific Research Institute of Henan Province Zhengzhou450002;Zhengzhou Industry University Zhengzhou450002;Forestry Reconnaissance and Design Institute of Henan Province Zhengzhou450001

Received:1996-04-12 Revised:1900-01-01 Online:1997-04-25 Published:1997-04-25

摘要/Abstract

关键词: 林分干形, 形点法, 立体角规, 林分蓄积

Abstract: In order to measure stand volume with angle gauge，according to the form point of standing tree，we propose and define a new concept-stand trunk，invent and make the three-dimensional an-gle gauge dendrometer．It is used directly tO measure the height of stand in the form point，obtain stand volme from deducing the stand trunk．The procedure is the method of stand form point．The method avoids visual difficulty in the forest that results from overlapping of the tree crown．Compare with the method of corresponding height sum，it is simple and convenient.easy to use．The simula-tion result with computer shows：applying the method to measure stand volume，the sampling preci-sion is about 95％ and systematic error is in the range of±5％．

Key words: Stand trunk, The method of form point, Three-dimensional angle gauge, Stand volume

徐祯祥钱振国韩芝隆刘建生. 角规点上测定林分蓄积的形点法[J]. , 1997, 33(zk1): 133-138.

Xu Zhenxiang;Qian Zhenguo;Han Zhilong;Liu Jiansheng. THE METHOD OF FORM POINT FOR MEASURING STAND VOLUME ON THE POINT OF ANGLE GAUGE[J]. , 1997, 33(zk1): 133-138.

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