Effects of leaf hydrophobicity and water droplet retention on canopy storage capacity

Holder, Curtis D.

doi:10.1002/eco.1278

Cited by 83 publications

(79 citation statements)

References 48 publications

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“…When leaf contact angle is high, rainwater falling on leaf surface tend to drop more easily under the influences of gravity or any meteorological and biotic disturbances (Holder, 2013;Xiong et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

Surface water storage characteristics of main herbaceous species in semiarid Loess Plateau of China

et al. 2019

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Plant surface water storage greatly affects rainfall interception in water-limited environments. The storage characteristics of 55 common herbaceous species and their relationships with plant morphology, biomass-related traits, and leaf wettability were examined using artificial wetting method in semiarid Loess Plateau. Results indicated that plant mass storage ranged from 0.12-1.26 g g −1 , and Glycyrrhiza uralensis and Leymus secalinus had the highest and lowest values, respectively. Leaf storage ratio ranged from 40.2-93.2%, with the highest value in G. uralensis and the lowest in Chenopodium album. Fifty-two species had higher storage capacities in leaves than that in stems. Gramineous and leguminous species had relatively lower mass storage and leaf storage ratio than compositae and rosaceae. Plant and leaf mass storage were negatively correlated with leaf adaxial/abaxial contact angles, and stem mass storage was negatively correlated with plant height. Storage capacities were closely related to morphological and biomass-related traits, and leaf area was a better predictor of plant and leaf storage capacities, and stem fresh weight was a better predictor at the stem level. Path analysis revealed that leaf area and adaxial contact angle were two independent variables directly affecting plant and leaf storage capacities. Their ratio (i.e., wettability index) had higher correlations with storage capacities than other single trait and multiple regression models of these traits. Our results implied that high proportions of gramineous and leguminous species in grassland community would favour reducing interception loss, and wettability index can be an effective indicator for evaluating rainfall interception and vegetation hydrological benefits. KEYWORDSleaf area, leaf contact angle, leaf storage ratio, species family, surface water storage, wettability index

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Section: Discussionmentioning

confidence: 99%

Surface water storage characteristics of main herbaceous species in semiarid Loess Plateau of China

et al. 2019

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“…Holder (2013) found that the rank order of total leaf surface retention of a branch corresponded to the rank order of leaf hydrophobicity across seven species. These characteristics are also important for water adhesion on leaf surfaces, which should be quantified and compared in the related research (Aryal & Neuner, 2010;Holder, 2013;Wang et al, 2014). In the present study, leaf wettability is most suitable for predicting plant surface water retention involving 27 herb species is compelling.…”

Section: Relationships Between Leaf Wettability and Surface Water Rmentioning

confidence: 94%

Variability in leaf wettability and surface water retention of main species in semiarid Loess Plateau of China

et al. 2018

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Leaf wettability, adhesion or repulsion of water drops, varies greatly among species and plays an important role in plant-soil hydrological relations. This study aimed to examine the variability in leaf wettability among species in different habitats and growth periods, and their relationships with plant surface water retention in the semiarid Loess Plateau of China. The leaf adaxial and abaxial contact angles, the surface water retention of leaves and individual plants, and general plant traits of 68 species belonging to 28 families were examined from May to August in 2017. Results showed that leaf water contact angles ranged from 27.3°to 133.4°and leaves with higher contact angles normally had lower variation coefficients. Leaf wettability was affected by internal properties (including leaf side, family, and leaf age) and external conditions (growth period), whereas the life form and slope aspect did not show significant effects. There were 47 species having higher contact angles on adaxial than abaxial surfaces, and the differences were significant in 23 species. Gramineous and leguminous species were more unwettable than compositae and rosaceous species. New leaves were more unwettable than old leaves. Surface wettability increased from May-June to July-August period. Leaf wettability was positively correlated with leaf surface water retention and was the best predictor of individual plant surface water retention compared with other plant traits. Leaf wettability showed interspecific differences associated with family and growth stage and can be a considerable variable in predicting canopy interception and evaluating vegetation hydrological function in drought environments.

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“…The reason might be that our tests were performed in laboratory without wind, and wind could potentially decrease the canopy interception [28,30]. Besides, alfalfa leaves have relatively high hydrophobicity [6], and this would decrease the amount of water intercepted by canopy [41].…”

Section: Model Coefficientsmentioning

confidence: 99%

A Rainfall Interception Model for Alfalfa Canopy under Simulated Sprinkler Irrigation

Jiao¹,

Su²,

Han³

et al. 2016

Water

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Estimating canopy interception of water by plants during rainfall or sprinkler irrigation is a critical step for evaluating water-use efficiency. Most existing experimental studies and mathematic models of canopy interception have paid little attention to the interception losses of water by herbaceous plants. To better understand the canopy interception processes of herbaceous plants and to estimate the interception losses, a process-based dynamic interception model for alfalfa canopy was developed and validated by an experiment under conditions of simulated sprinkler irrigation. The parameters of the model included the maximum interception, the rate of interception of the alfalfa canopy, and the duration of sprinkler irrigation. The model demonstrated that the amount of interception increased rapidly with duration in the early stage of sprinkler irrigation, and then gradually leveled off until the maximum retention capacity of the canopy was reached. The maximum interception by the alfalfa canopy, ranging from 0.29 to 1.26 mm, increased nonlinearly with the increase of leaf area index (LAI) and sprinkling intensity. The rate of interception increased with the decrease of LAI and the increase of sprinkling intensities. Meanwhile, a nonlinear equation based on sprinkling intensity and plant height was proposed in order to more practically estimate the maximum interception by alfalfa canopy.

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Effects of leaf hydrophobicity and water droplet retention on canopy storage capacity

Cited by 83 publications

References 48 publications

Surface water storage characteristics of main herbaceous species in semiarid Loess Plateau of China

Surface water storage characteristics of main herbaceous species in semiarid Loess Plateau of China

Variability in leaf wettability and surface water retention of main species in semiarid Loess Plateau of China

A Rainfall Interception Model for Alfalfa Canopy under Simulated Sprinkler Irrigation

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