# Upadhyay & Khadka 2024: Modelling Height-Diameter Relationship of Pinus Roxburghii in Nepal

Upadhyay, J., & Khadka, S. (2024). Modelling height-diameter relationship of Pinus roxburghii in Nepal. American Journal of Biological and Environmental Statistics, 10(3), 49–59.

- DOI: https://doi.org/10.11648/j.ajbes.20241003.12
- Access: open access
- Copy we read: http://article.sciencepg.com/pdf/j.ajbes.20241003.12
- Status: no retraction or correction notice recorded (Crossref is asked weekly); last checked 2026-11-02
- Page: https://treeallometry.org/sources/upadhyay-2024/

## Equations from this source (4)

### Chir pine height from D, cubic (M3)

Height for Pinus roxburghii, Nepal. Inputs: DBH.

As printed (Table 4, M3):

> height=1.569+0.5791*dbh−0.0008634⋅*dbh2−0.000009678* dbh3

Page: https://treeallometry.org/equations/upadhyay-2024-h-cubic/

### Chir pine height from D, inverse (M5)

Height for Pinus roxburghii, Nepal. Inputs: DBH.

As printed (Table 4, M5):

> height= 27.261 + -227 * (1/dbh)

Page: https://treeallometry.org/equations/upadhyay-2024-h-inverse/

### Chir pine height from D, linear (M1)

Height for Pinus roxburghii, Nepal. Inputs: DBH.

As printed (Table 4, M1):

> height = 0.466 *dbh + 3.623

Page: https://treeallometry.org/equations/upadhyay-2024-h-linear/

### Chir pine height from D, quadratic (M2)

Height for Pinus roxburghii, Nepal. Inputs: DBH.

As printed (Table 4, M2):

> height=1.1052804+0.6252304*dbh−0.0021242*dbh2

Page: https://treeallometry.org/equations/upadhyay-2024-h-quadratic/