Application and precision analysis of several surveying methods in forest resources survey

XU Wen-bing; GAO Fei; DU Hua-qiang

Volume 26 Issue 1

Feb. 2009

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XU Wen-bing, GAO Fei, DU Hua-qiang. Application and precision analysis of several surveying methods in forest resources survey[J]. Journal of Zhejiang A&F University, 2009, 26(1): 132-136.

Citation:

XU Wen-bing, GAO Fei, DU Hua-qiang. Application and precision analysis of several surveying methods in forest resources survey[J]. Journal of Zhejiang A&F University, 2009, 26(1): 132-136.

Application and precision analysis of several surveying methods in forest resources survey

1.
1．School of Environment and Technology，Zhejiang Forestry College，Lin’an 311300，Zhejiang，China;
2.
School of Civil Engineering，Hefei University of Technology，Hefei 230009，Anhui，China

Received Date: 2008-02-27
Rev Recd Date: 2008-06-11
Publish Date: 2009-02-20

Abstract

This paper compares and analyzes several surveying methods in forestry resource investigation via an analysis of experiment datum and theory reasoning. The research findings are as follows：（1） The compass could only satisfy the criteria and standards of surveying sample plot due to its roughness；and its accuracy would decrease significantly while distance and vertical angle increased；the compass was inconvenient，imprecise and inefficient for large scale forestry acreage survey or special scientific research. （2） When the length measured by total station was not over 100 m，semi-observation accuracy of distance measuring could reach 1/10 000 and height measuring error wouldn’t be over 1 cm；and the measuring was hardly affected by distance and vertical angle. （3） When acreage and length were over 3.34 hm2 and 100 m respectively，handy global positioning system（GPS） could replace compass，and its measuring accuracy could be improved by coordinating difference or modifying parameter of coordinates transform. Besides，development of network real time kinematic（RTK） with total station would be main instruments for the precise forestry surveying.［Ch，2 tab. 13 ref.］
- forest mensuration,
- forestry resources survey,
- precision analysis,
- compass,
- total station,
- handy global positioning system（GPS）

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

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Application and precision analysis of several surveying methods in forest resources survey

1. 1．School of Environment and Technology，Zhejiang Forestry College，Lin’an 311300，Zhejiang，China;

2. School of Civil Engineering，Hefei University of Technology，Hefei 230009，Anhui，China

Received Date: 2008-02-27

Rev Recd Date: 2008-06-11

Publish Date: 2009-02-20

Key words:

Abstract: This paper compares and analyzes several surveying methods in forestry resource investigation via an analysis of experiment datum and theory reasoning. The research findings are as follows：（1） The compass could only satisfy the criteria and standards of surveying sample plot due to its roughness；and its accuracy would decrease significantly while distance and vertical angle increased；the compass was inconvenient，imprecise and inefficient for large scale forestry acreage survey or special scientific research. （2） When the length measured by total station was not over 100 m，semi-observation accuracy of distance measuring could reach 1/10 000 and height measuring error wouldn’t be over 1 cm；and the measuring was hardly affected by distance and vertical angle. （3） When acreage and length were over 3.34 hm2 and 100 m respectively，handy global positioning system（GPS） could replace compass，and its measuring accuracy could be improved by coordinating difference or modifying parameter of coordinates transform. Besides，development of network real time kinematic（RTK） with total station would be main instruments for the precise forestry surveying.［Ch，2 tab. 13 ref.］

Application and precision analysis of several surveying methods in forest resources survey

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Related

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