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Development of Stem Volume Equation for Urban Trees of Abomey-Calavi in Southern Benin (West Africa)

Received: 14 November 2021    Accepted: 10 December 2021    Published: 24 December 2021
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Abstract

Information on growing stock is important for understanding health assessment, environmental analysis, carbon storage estimation, and economic analysis of urban forest. The stand volume estimation enables the calculation of ecosystemic services value and growth stock of urban forests. However, most of volume models fitted for multiple species in tropical forests may not be suitable for urban trees. This study was conducted to develop generic volume models for urban trees in Abomey-Calavi at the southern Benin. A total of 1608 trees belonging to 80 plant species were measured for their diameter at breast height (DBH), stem height (h) and stem volume using non-destructive sampling methods. Using a nonlinear procedure, six volume models were constructed. Cross validation and Fit statistics like standard error of estimate (SEE), relative absolute error (RAE), root mean square error (RMSE), fit index (FI), Akaike information criterion (AIC) and Willmott’s agreement index (dw) were used to evaluate the efficiency and stability of different models. The six generic volume models developed in this study included both diameter and height. These models exhibited an absence of multicollinearity, with normal and homoscedastic residuals. Furthermore, they show high efficiency (IF > 0.997) and reduce of prediction errors (RMSE: 0.05388–0.06629 m3; RAE: 0.05186–0.06952), which ensuring stability in the estimates. However, the Model II was the best for predicting the stem volume of urban tree according to evaluation statistics and rank analysis. The models developed can provide stem volumes prediction with accurate estimations. Though, stem heights should be systematically measured. These models can contribute to assess the productivity of urban forests in order to pursue their sustainable management and planning.

Published in American Journal of Biological and Environmental Statistics (Volume 7, Issue 4)
DOI 10.11648/j.ajbes.20210704.16
Page(s) 111-120
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2021. Published by Science Publishing Group

Keywords

Stem Volume Equation, Urban Forest, Forest Productivity, Sustainable Management, Benin

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    Erick Senademi Sogbossi, Julien Gaudence Djego. (2021). Development of Stem Volume Equation for Urban Trees of Abomey-Calavi in Southern Benin (West Africa). American Journal of Biological and Environmental Statistics, 7(4), 111-120. https://doi.org/10.11648/j.ajbes.20210704.16

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    Erick Senademi Sogbossi; Julien Gaudence Djego. Development of Stem Volume Equation for Urban Trees of Abomey-Calavi in Southern Benin (West Africa). Am. J. Biol. Environ. Stat. 2021, 7(4), 111-120. doi: 10.11648/j.ajbes.20210704.16

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    Erick Senademi Sogbossi, Julien Gaudence Djego. Development of Stem Volume Equation for Urban Trees of Abomey-Calavi in Southern Benin (West Africa). Am J Biol Environ Stat. 2021;7(4):111-120. doi: 10.11648/j.ajbes.20210704.16

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  • @article{10.11648/j.ajbes.20210704.16,
      author = {Erick Senademi Sogbossi and Julien Gaudence Djego},
      title = {Development of Stem Volume Equation for Urban Trees of Abomey-Calavi in Southern Benin (West Africa)},
      journal = {American Journal of Biological and Environmental Statistics},
      volume = {7},
      number = {4},
      pages = {111-120},
      doi = {10.11648/j.ajbes.20210704.16},
      url = {https://doi.org/10.11648/j.ajbes.20210704.16},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajbes.20210704.16},
      abstract = {Information on growing stock is important for understanding health assessment, environmental analysis, carbon storage estimation, and economic analysis of urban forest. The stand volume estimation enables the calculation of ecosystemic services value and growth stock of urban forests. However, most of volume models fitted for multiple species in tropical forests may not be suitable for urban trees. This study was conducted to develop generic volume models for urban trees in Abomey-Calavi at the southern Benin. A total of 1608 trees belonging to 80 plant species were measured for their diameter at breast height (DBH), stem height (h) and stem volume using non-destructive sampling methods. Using a nonlinear procedure, six volume models were constructed. Cross validation and Fit statistics like standard error of estimate (SEE), relative absolute error (RAE), root mean square error (RMSE), fit index (FI), Akaike information criterion (AIC) and Willmott’s agreement index (dw) were used to evaluate the efficiency and stability of different models. The six generic volume models developed in this study included both diameter and height. These models exhibited an absence of multicollinearity, with normal and homoscedastic residuals. Furthermore, they show high efficiency (IF > 0.997) and reduce of prediction errors (RMSE: 0.05388–0.06629 m3; RAE: 0.05186–0.06952), which ensuring stability in the estimates. However, the Model II was the best for predicting the stem volume of urban tree according to evaluation statistics and rank analysis. The models developed can provide stem volumes prediction with accurate estimations. Though, stem heights should be systematically measured. These models can contribute to assess the productivity of urban forests in order to pursue their sustainable management and planning.},
     year = {2021}
    }
    

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  • TY  - JOUR
    T1  - Development of Stem Volume Equation for Urban Trees of Abomey-Calavi in Southern Benin (West Africa)
    AU  - Erick Senademi Sogbossi
    AU  - Julien Gaudence Djego
    Y1  - 2021/12/24
    PY  - 2021
    N1  - https://doi.org/10.11648/j.ajbes.20210704.16
    DO  - 10.11648/j.ajbes.20210704.16
    T2  - American Journal of Biological and Environmental Statistics
    JF  - American Journal of Biological and Environmental Statistics
    JO  - American Journal of Biological and Environmental Statistics
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    EP  - 120
    PB  - Science Publishing Group
    SN  - 2471-979X
    UR  - https://doi.org/10.11648/j.ajbes.20210704.16
    AB  - Information on growing stock is important for understanding health assessment, environmental analysis, carbon storage estimation, and economic analysis of urban forest. The stand volume estimation enables the calculation of ecosystemic services value and growth stock of urban forests. However, most of volume models fitted for multiple species in tropical forests may not be suitable for urban trees. This study was conducted to develop generic volume models for urban trees in Abomey-Calavi at the southern Benin. A total of 1608 trees belonging to 80 plant species were measured for their diameter at breast height (DBH), stem height (h) and stem volume using non-destructive sampling methods. Using a nonlinear procedure, six volume models were constructed. Cross validation and Fit statistics like standard error of estimate (SEE), relative absolute error (RAE), root mean square error (RMSE), fit index (FI), Akaike information criterion (AIC) and Willmott’s agreement index (dw) were used to evaluate the efficiency and stability of different models. The six generic volume models developed in this study included both diameter and height. These models exhibited an absence of multicollinearity, with normal and homoscedastic residuals. Furthermore, they show high efficiency (IF > 0.997) and reduce of prediction errors (RMSE: 0.05388–0.06629 m3; RAE: 0.05186–0.06952), which ensuring stability in the estimates. However, the Model II was the best for predicting the stem volume of urban tree according to evaluation statistics and rank analysis. The models developed can provide stem volumes prediction with accurate estimations. Though, stem heights should be systematically measured. These models can contribute to assess the productivity of urban forests in order to pursue their sustainable management and planning.
    VL  - 7
    IS  - 4
    ER  - 

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Author Information
  • Faculty of Agronomic Sciences, University of Abomey-Calavi, Abomey-Calavi, Benin

  • Faculty of Agronomic Sciences, University of Abomey-Calavi, Abomey-Calavi, Benin

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