Application of R program package ForestStatTool in statistics of individual tree and stand factors in forestry

He Xiao; Lei Xiangdong; Zhou Chaofan; Duan Guangshuang; Zhou Mengli; Shi Jingning

doi:10.12171/j.1000-1522.20240076

Journal of Beijing Forestry University > 2024 > 46(10): 125-135. > DOI: 10.12171/j.1000-1522.20240076

He Xiao, Lei Xiangdong, Zhou Chaofan, Duan Guangshuang, Zhou Mengli, Shi Jingning. Application of R program package ForestStatTool in statistics of individual tree and stand factors in forestry[J]. Journal of Beijing Forestry University, 2024, 46(10): 125-135. DOI: 10.12171/j.1000-1522.20240076

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Application of R program package ForestStatTool in statistics of individual tree and stand factors in forestry

1.
State Key Laboratory of Efficient Production of Forest Resources, Key Laboratory of Forest Management and Growth Modelling, National Forestry and Grassland Administration, Institute of Forest Resource Information Techniques, Chinese Academy of Forestry, Beijing 100091, China
2.
College of Mathematics and Statistics, Xinyang Normal University, Xinyang 464000, Henan, China
3.
College of Forestry, Henan Agricultural University, Zhengzhou 450046, Henan, China
4.
College of Economics and Management, Hebei Agricultural University, Baoding 071000, Hebei, China

More Information

Received Date: March 17, 2024
Revised Date: September 19, 2024
Accepted Date: September 19, 2024
Available Online: September 22, 2024

Graphical Abstract

Abstract

Abstract

Objective
To achieve fast, accurate calculation of individual tree and stand factors in forestry, a general R program package called ForestStatTool was developed. Specific examples were provided to demonstrate its application in statistical calculation of individual tree and stand factors in forestry.
Method
In the R environment, 12 practical functions were developed, covering 7 categories including duplicated labels processing, duplicated coordinates processing, plot segmentation, spatial structure index calculation, competition index calculation, biodiversity index calculation, and stand factor calculation. Using data from a 0.06 ha circular sample plot of Platycladus orientalis pure forest in Beijing’s Shisanling Forest Farm and a 1 ha square big sample plot of spruce-fir conifer-broadleaf mixed forest in the Jingouling Forest Farm, Wangqing Forestry Bureau, Jilin Province of northeastern China, the main functions and usage of ForestStatTool package were demonstrated.
Result
Through the analysis of various sample plot data using ForestStatTool package, spatial structure, competition index, biodiversity and other indicators were successfully calculated. The results indicated that the package can effectively identify tree spatial distribution characteristics, quantify tree competition pressure, and reveal stand structure and diversity features. This tool is able to quickly handle the statistical analysis of large and complex sample plots, making it suitable for various forestry applications.
Conclusion
ForestStatTool package can enable convenient, fast, accurate data checking and preprocessing, and complete the calculation of multiple individual tree and stand factors in forestry. It can be applied in the fields such as forest management, silviculture, and forest ecology.
- data analysis,
- statistics,
- R program package,
- ForestStatTool,
- individual tree factors,
- stand factors,
- sample plot survey data

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References (17)

References

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Application of R program package ForestStatTool in statistics of individual tree and stand factors in forestry