A model to consider the spatial variability of rainfall partitioning within deciduous canopy. I. Model description

Davie, Tim; Durocher, Myriam

doi:10.1002/(sici)1099-1085(199709)11:11<1509::aid-hyp482>3.0.co;2-l

Cited by 15 publications

(4 citation statements)

References 27 publications

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“…The review of Crockford and Richardson (2000) illustrates that it is difficult to draw general conclusions about interception by a particular forest type because of the combined effect of several tree and stand characteristics and the dependency on climatic conditions. For modelling rainfall interception, forest structure is generally described by canopy cover and storage capacity (Rutter and Morton, 1977;Gash, 1979;Davie and Durocher, 1997;Liu, 1997).…”

Section: Introductionmentioning

confidence: 99%

Rainfall partitioning into throughfall, stemflow, and interception within a single beech (Fagus sylvatica L.) canopy: influence of foliation, rain event characteristics, and meteorology

Staelens

Schrijver

Verheyen

et al. 2007

Hydrological Processes

234

184

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Abstract:While the hydrological balance of forest ecosystems has often been studied at the annual level, quantitative studies on the factors determining rainfall partitioning of individual rain events are less frequently reported. Therefore, the effect of the seasonal variation in canopy cover on rainfall partitioning was studied for a mature deciduous beech (Fagus sylvatica L.) tree over a 2-year period. At the annual level, throughfall amounted to 71% of precipitation, stemflow 8%, and interception 21%. Rainfall partitioning at the event level depended strongly on the amount of rainfall and differed significantly (p < 0Ð001) between the leafed and the leafless period of the year. Therefore, water fluxes of individual events were described using a multiple regression analysis (r a 2 > 0Ð85, n D 205) with foliation, rainfall characteristics and meteorological variables as predictor variables. For a given amount of rainfall, foliation significantly increased interception and decreased throughfall and stemflow amounts. In addition, rainfall duration, maximum rainfall rate, vapour pressure deficit, and wind speed significantly affected rainfall partitioning at the event level. Increasing maximum hourly rainfall rate increased throughfall and decreased stemflow generation, while higher hourly vapour pressure deficit decreased event throughfall and stemflow amounts. Wind speed decreased throughfall in the growing period only. Since foliation and the event rainfall amount largely determined interception loss, the observed net water input under the deciduous canopy was sensitive to the temporal distribution of rainfall.

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Section: Introductionmentioning

confidence: 99%

Rainfall partitioning into throughfall, stemflow, and interception within a single beech (Fagus sylvatica L.) canopy: influence of foliation, rain event characteristics, and meteorology

Staelens

Schrijver

Verheyen

et al. 2007

Hydrological Processes

234

184

View full text Add to dashboard Cite

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“…Measurement of representative throughfall fields in the presence of pour points is challenging, and likely requires deterministically sampling pour points, similarly to how stemflow is treated. Like stemflow, such measurements could then be used in physically based models (Davie & Durocher, 1997) to differentiate throughfall fluxes within the canopy and stemflow. However, optimal throughfall measurement designs where pour points occur need further investigation.…”

Section: Generalizing the Resultsmentioning

confidence: 99%

Introducing Pour Points: Characteristics and Hydrological Significance of a Rainfall‐Concentrating Mechanism in a Water‐Limited Woodland Ecosystem

Kunadi,

Lardner,

Silberstein

et al. 2024

Water Resources Research

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The interception of rainfall by plant canopies alters the depth and spatial distribution of water arriving at the soil surface, and thus the location, volume, and depth of infiltration. Mechanisms like stemflow are known to concentrate rainfall and route it deep into the soil, yet other mechanisms of flow concentration are poorly understood. This study characterizes pour points, formed by the detachment of water flowing under a branch, using a combination of field observations in Western Australian banksia woodlands and rainfall simulation experiments on Banksia menziesii branches. We aim to establish the hydrological significance of pour points in a water‐limited woodland ecosystem, along with the features of the canopy structure and rainfall that influence pour point formation and fluxes. Pour points were common in the woodland and could be identified by visually inspecting trees. Throughfall depths at pour points were up to 15 times greater than rainfall and generally comparable to or greater than stemflow. Soil water content beneath pour points was greater than in adjacent controls, with 20%–30% of the seasonal rainfall volume infiltrated into the top 1 m of soil beneath pour points, compared to 5% in controls. Rainfall simulations showed that pour points amplified the spatial heterogeneity of throughfall, violating assumptions used to close the water balance. The simulation experiments demonstrated that pour point fluxes depend on the interaction of branch angle and foliation for a given branch architecture. Pour points can play a significant part in the water balance, depending on their density and rainfall concentration ability.

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“…The Rutter model treats the canopy as a single large leaf, although it has been adapted to provide a threedimensional canopy (e.g. Davie and Durocher, 1997) that can then be altered to allow for changes and growth in the canopy.…”

Section: Canopy Interception Loss Estimationmentioning

confidence: 99%

Fundamentals of Hydrology

Gupta

2010

Modern Hydrology and Sustainable Water Development

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In order to manage the world's increasingly scarce water resources we must have a sound understanding of how water moves around the planet and what influences water quality. Fundamentals of Hydrology provides an engaging and comprehensive introduction to this subject and provides real-life examples of water resource management in a changing world.The second edition of this popular book brings the text up-to-date with additional case studies and diagrams and a greater synthesis of water quality with physical hydrology. The chapters on runoff and evaporation have been updated and the final chapter on hydrology in a changing world has more material on water resource management strategies. Additionally the chapter on streamflow analysis now includes a more in-depth section on modelling runoff. The book begins with a comprehensive coverage of precipitation, evaporation, water stored in the ground and as snow and ice, and runoff. These physical hydrological processes show with respect to the fundamental knowledge about the process, its measurement and estimation and how it ties in with water quality. Following this is a section on analysing streamflow data, including using computer models and combining hydrology and ecology for in-stream flow assessment. A chapter on water quality shows how to measure and estimate it in a variable environment and finishes with a section on pollution treatment. The final chapter brings the text together to discuss water resource management and real-life issues that are faced by hydrologists in a constantly changing world.Fundamentals of Hydrology is a lively and accessible introduction to the study of hydrology at university level. This new edition continues to provide an understanding of hydrological processes, knowledge of the techniques used to assess water resources and an up-to-date overview of water resource management in a changing world. Throughout the text, wide-ranging examples and case studies are used to clearly explain ideas and methods. Short chapter summaries, essay questions, guides to further reading and a glossary are also included.

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A model to consider the spatial variability of rainfall partitioning within deciduous canopy. I. Model description

Cited by 15 publications

References 27 publications

Rainfall partitioning into throughfall, stemflow, and interception within a single beech (Fagus sylvatica L.) canopy: influence of foliation, rain event characteristics, and meteorology

Rainfall partitioning into throughfall, stemflow, and interception within a single beech (Fagus sylvatica L.) canopy: influence of foliation, rain event characteristics, and meteorology

Introducing Pour Points: Characteristics and Hydrological Significance of a Rainfall‐Concentrating Mechanism in a Water‐Limited Woodland Ecosystem

Fundamentals of Hydrology

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