Idealized branch sections and hydrodynamic analysis characterize rainfall partitioning DOI Creative Commons
Aryan Puri, Ashvath Singh Kunadi, David Pfefferlé

et al.

Hydrological Processes, Journal Year: 2024, Volume and Issue: 38(6)

Published: June 1, 2024

Abstract Water flow on plant canopies determines the partitioning of intercepted rainfall between stemflow and throughflow, yet understanding these processes remains minimally developed. Plant may concentrate water into rivulets that beneath branches. If remain attached to branches until they encounter main tree trunk, form stemflow. detach from branches, however, ‘pour points’, regions concentrated throughfall. Here, rivulet below uniform cylinders was studied experimentally. Experimental observations were interpreted using hydrodynamic theory predict likelihood a detaching based critical height (). Predictions detachment explored for simplified case where is introduced at known rates discrete point above uniform, cylindrical ‘branch’. Where branch straight, percentage trials forming rivulet, or formation rate, increased with increasing inclination angle horizontal axis. Rivulet did not vary rate. However, volume collected end branch, analogous stemflow, decreased higher due instabilities. Rivulets straight detach. Instead, stream accelerated reduced in as it flowed along cylinder. formed curved detached only when axis after curve approached horizontal. Future theoretical experimental studies can extend this work improve more complex surfaces architectures mechanistically understand canopy interception.

Language: Английский

Satellite and eddy covariance analysis reveals short-lived evapotranspiration changes after fire in Mediterranean woodland DOI Creative Commons
H. Nguyen, Simone Gelsinari, Nik Callow

et al.

Journal of Hydrology, Journal Year: 2025, Volume and Issue: unknown, P. 132654 - 132654

Published: Jan. 1, 2025

Language: Английский

Citations

0
Machine Learning Reveals the Contrasting Roles of Rainfall and Canopy Structure Metrics on the Formation of Canopy Drip and Splash Throughfall DOI Creative Commons
Kazuki Nanko, Delphis F. Levia, S. Iida

et al.

Journal of Geophysical Research Biogeosciences, Journal Year: 2025, Volume and Issue: 130(2)

Published: Feb. 1, 2025

Abstract Throughfall is a significant majority of the total precipitation reaching ground in forested areas. This study revealed biotic and abiotic factors influencing throughfall generation process, with partitioning into free throughfall, splash canopy drip created at foliar surface points (FSDPs) occasional woody (O‐WSDPs), utilizing machine learning. Using large‐scale rainfall simulator, drops were simultaneously measured 19 locations under mix deciduous coniferous tree species both foliated unfoliated states. Random forest modeling showed that factors, such as foliage amount, primarily affected development volume fraction trees. In contrast, for trees, was mainly influenced by including drop size kinetic energy open rainfall. The formation From comparison between states, process separately clarified FSDPs O‐WSDPs. More larger generated more wetted less fluctuation FSDPs, whereas and/or higher impact underscores importance structure meteorological conditions determining partitioning. findings contribute to nuanced understanding rainwater redistribution ecosystems.

Language: Английский

Citations

0
An individual tree stemflow model integrating branch-leaf cluster structure and drainage processes from multi-platform LiDAR scanning DOI
Yupan Zhang, Yiliu Tan, Chen‐Wei Chiu

et al.

Journal of Hydrology, Journal Year: 2025, Volume and Issue: unknown, P. 132838 - 132838

Published: Feb. 1, 2025

Language: Английский

Citations

0
Vegetation greening accelerated the propagation from meteorological to soil droughts in the Loess Plateau from a three-dimensional perspective DOI

Haoyu Yang,

Feng Ma, Xing Yuan

et al.

Journal of Hydrology, Journal Year: 2024, Volume and Issue: unknown, P. 132522 - 132522

Published: Dec. 1, 2024

Language: Английский

Citations

2
Idealized branch sections and hydrodynamic analysis characterize rainfall partitioning DOI Creative Commons
Aryan Puri, Ashvath Singh Kunadi, David Pfefferlé

et al.

Hydrological Processes, Journal Year: 2024, Volume and Issue: 38(6)

Published: June 1, 2024

Abstract Water flow on plant canopies determines the partitioning of intercepted rainfall between stemflow and throughflow, yet understanding these processes remains minimally developed. Plant may concentrate water into rivulets that beneath branches. If remain attached to branches until they encounter main tree trunk, form stemflow. detach from branches, however, ‘pour points’, regions concentrated throughfall. Here, rivulet below uniform cylinders was studied experimentally. Experimental observations were interpreted using hydrodynamic theory predict likelihood a detaching based critical height (). Predictions detachment explored for simplified case where is introduced at known rates discrete point above uniform, cylindrical ‘branch’. Where branch straight, percentage trials forming rivulet, or formation rate, increased with increasing inclination angle horizontal axis. Rivulet did not vary rate. However, volume collected end branch, analogous stemflow, decreased higher due instabilities. Rivulets straight detach. Instead, stream accelerated reduced in as it flowed along cylinder. formed curved detached only when axis after curve approached horizontal. Future theoretical experimental studies can extend this work improve more complex surfaces architectures mechanistically understand canopy interception.

Language: Английский

Citations

1