Applicability of Sap Flux Measurements in Moso Bamboo (Phyllostachys pubescens): Relationship between Water Absorption and Whole-tree Water Use Utilizing Granier Sensor Sap Flux Measurements.

Onozawa, Yuka; Kume, Tomonori; Komatsu, Hirokazu; Tsuruta, Kenji; Otsuki, Kyoichi

doi:10.4005/jjfs.91.366

Cited by 10 publications

(7 citation statements)

References 13 publications

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“…In the bamboo forest, canopy transpiration was measured using the sap-flow technique (Onozawa et al 2009b;Kume et al 2010;Komatsu et al 2010b). The value of E in the bamboo stand was compared with the canopy transpiration based on the sap-flow technique.…”

Section: Soil-water Budget Methodsmentioning

confidence: 99%

Comparisons of soil‐water content between a Moso bamboo (Phyllostachys pubescens) forest and an evergreen broadleaved forest in western Japan

Shinohara

Otsuki

2015

Plant Species Biology

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In Japan, forests of Moso bamboo (Phyllostachys pubescens, an exotic invasive giant bamboo) have naturalized and expanded rapidly, replacing surrounding broadleaved and coniferous forests. To evaluate impacts caused by these forest-type replacements on the hydrological cycle, soil-water content and its spatial variability in a Moso bamboo forest were compared with those in an adjacent evergreen broadleaved forest, in a case study of a stand in western Japan (northern Kyushu). The volumetric soil-water content averaged over depths between 0 and 60 cm was consistently higher in the bamboo stand than that in the broadleaved stand. These results contrast with previous studies comparing the soil-water content in Moso bamboo forests with that in other forest types. The sum of canopy transpiration and soil evaporation (E) in the bamboo stand tended to be larger than that in the broadleaved stand. Small canopy interception loss was reported in the bamboo forest. Therefore, the large amount of E would counterbalance the small canopy interception loss in the bamboo forest. Differences in soil characteristics between the two stands may be the main factor causing differences in soil-water content. Spatial variation in soil-water content in the bamboo stand was larger than that in the broadleaved stand, confirming findings in a previous series of our study. This could happen because the well-developed root-system in the bamboo forest enhances preferential flow in the soil. To evaluate the effects of aggressive invasion of alien giant bamboo on the ecosystem functions, we recommend further studies measuring various hydrological components in various Moso bamboo forests.

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Section: Soil-water Budget Methodsmentioning

confidence: 99%

Comparisons of soil‐water content between a Moso bamboo (Phyllostachys pubescens) forest and an evergreen broadleaved forest in western Japan

Shinohara

Otsuki

2015

Plant Species Biology

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“…The eastern side of the forest faced a natural broadleaved forest, and the other sides faced coniferous plantation forests. The Moso bamboo forest at this site has invaded the surrounding forests (Onozawa et al ., ).…”

Section: Methodsmentioning

confidence: 99%

Characteristics of canopy interception loss in Moso bamboo forests of Japan

Shinohara

Komatsu

Kuramoto

et al. 2012

Hydrological Processes

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In recent years, Moso bamboo (Phyllostachys pubescens) forests have rapidly expanded in Japan by replacing surrounding coniferous and/or broadleaved forests. To evaluate the change in water yield from forested areas because of this replacement, it is necessary to examine evapotranspiration for Moso bamboo forests. However, canopy interception loss, one of the major components of evapotranspiration in forested areas, has been observed in only two Moso bamboo forests in Japan with relatively high stem density (~7000 stems/ha). There are, in fact, many Moso bamboo forests with much lower stem density. Thus, we made precipitation (Pr), throughfall (Tf) and stemflow (Sf) observations for 1 year in a Moso bamboo forest with stem density of 3611 stems/ha and quantified canopy interception loss (Ic). Pr and Ic for the experimental period were 1636 and 166 mm, respectively, and Ic/Pr was 10%. The value was approximately the same as values for the other two Moso bamboo forests and lower than values for coniferous and broadleaved forests. On the other hand, Tf/Pr and Sf/Pr for our forest (86% and 4%, respectively) were approximately 10% of Pr larger and smaller than values for the other two Moso bamboo forests. These results suggest that the difference in stem density greatly affects precipitation partitioning (i.e. Tf/Pr and Sf/Pr) but does not greatly change Ic/Pr. Copyright © 2012 John Wiley & Sons, Ltd.

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“…For several tree species, since it is impossible to measure the sapwood area of all trees in a stand, the relationship between stem diameter and sapwood area is determined to estimate the stand sapwood area (e.g., Wullschleger et al 2001;Kumagai et al 2005). On the other hand, the vascular bundles of bamboo species are widely distributed throughout the culm wall (Liese 1998;Onozawa et al 2009b), and thus the total cross-sectional area of the culm wall in the stand, Ac _stand , should be used as an alternative for A S_stand in Eq. 3.…”

Section: Implication For Stand Transpiration Estimatementioning

confidence: 99%

“…Onozawa et al (2009b) found that the sap flux density J S for P. pubescens can be measured with the Grainer sensor (Granier 1987). For several tree species, since it is impossible to measure the sapwood area of all trees in a stand, the relationship between stem diameter and sapwood area is determined to estimate the stand sapwood area (e.g., Wullschleger et al 2001;Kumagai et al 2005).…”

Section: Implication For Stand Transpiration Estimatementioning

confidence: 99%

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Deriving a reduction factor for woody part of culm for bamboo Phyllostachys pubescens

et al. 2010

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We determined the reduction factor for the woody part of culm for one of the largest bamboo species, Phyllostachys pubescens Mazel ex Houz. The determined reduction factor enables us to convert the cross-sectional area of the whole culm into that of the culm wall. We collected 650 cross-cutting sample culms from a stand of P. pubescens in Mt. Toshima, Kumamoto Prefecture, western Japan. For the cut-end surface, the external culm diameter and culm wall thickness were measured, and then the cross-sectional area of the whole culm and the culm wall were computed. The cross-sectional area of the culm wall was strongly correlated with that of the whole culm. The regression analysis between these cross-sectional area indicated that the reduction factor for P. pubescens was 0.311, independent of the magnitude of the cross-sectional area. The independence implied that the determined reduction factor could be directly applied to convert the apparent culm volume into wood volume. Implications of the reduction factor for estimating transpiration and carbon stock of P. pubescens stands were discussed. The Monte Carlo simulation revealed that at least, but not more than, 60-70 cross-cutting culms collected from 20 culms are necessary for the reduction factor when estimating the stand level transpiration and carbon stock.

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Applicability of Sap Flux Measurements in Moso Bamboo (Phyllostachys pubescens): Relationship between Water Absorption and Whole-tree Water Use Utilizing Granier Sensor Sap Flux Measurements.

Cited by 10 publications

References 13 publications

Comparisons of soil‐water content between a Moso bamboo (Phyllostachys pubescens) forest and an evergreen broadleaved forest in western Japan

Comparisons of soil‐water content between a Moso bamboo (Phyllostachys pubescens) forest and an evergreen broadleaved forest in western Japan

Characteristics of canopy interception loss in Moso bamboo forests of Japan

Deriving a reduction factor for woody part of culm for bamboo Phyllostachys pubescens

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