Estimating Rainfall Interception of Pinus hartwegii and Abies religiosa Using Analytical Models and Point Cloud

Rainfall interception plays a role in the hydrological cycle and is a critical component of water balances at the basin level, which is why understanding it is very important; as a result, in recent years, various authors have proposed different models to explain this process and identify which of t...

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Published inForests Vol. 12; no. 7; p. 866
Main Authors Bolaños-Sánchez, Claudia, Prado-Hernández, Jorge Víctor, Silván-Cárdenas, José Luis, Vázquez-Peña, Mario Alberto, Madrigal-Gómez, José Manuel, Martínez-Ruíz, Antonio
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.07.2021
Subjects
Abies religiosa
Canopies
canopy parameters
Critical components
drone photogrammetry
Evaporation
Evaporation rate
Forests
Gash model
Herbivores
Hydrologic cycle
Hydrology
Interception
Mathematical models
Parameters
Photogrammetry
Pinus hartwegii
Precipitation
Rainfall
Rainfall interception
rainfall partitioning
Retention
stemflow
Three dimensional models
throughfall
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Summary:Rainfall interception plays a role in the hydrological cycle and is a critical component of water balances at the basin level, which is why understanding it is very important; as a result, in recent years, various authors have proposed different models to explain this process and identify which of them adapts better to each forest species. In this context, the aim of this research was to evaluate the Gash model and the sparse Gash analytical model in Pinus hartwegii Lindl. and Abies religiosa (Kunth) Schltdl. et. Cham., using measurements from 20 precipitation events recorded in May and June 2018 at the Zoquiapan Experimental Forest Station, Mexico. The evaporation rate was calculated using the Penman–Monteith method (PM) and Gash’s calculation procedure. The canopy parameters were also calculated with two methods, a graphical one (A) and a method proposed in this research (B), which is based on point cloud generated with drone photogrammetry. For P. hartwegii, the most accurate model to estimate interception per rainfall event was the Gash model with the A and Gash methods, which were used to calculate the canopy parameters and evaporation rates, respectively; for accumulated interception, the sparse Gash analytical model with the B and PM methods was used. For A. religiosa, the best fit for individual events was presented by the sparse Gash analytical model with the B and PM methods, and for accumulated interception, it was the Gash model with the B and Gash methods. The results allow concluding that the B method proposed in this research is a good alternative for the calculation of rainfall interception, since it tends to improve its estimation, shortening the time for acquiring information about the parameters of the canopy structure and thus minimizing the costs involved.
ISSN:1999-4907
1999-4907
DOI:10.3390/f12070866