抄録
Previous studies reported relationships between stem diameter at breast height (DBH) and whole-tree transpiration (Qt) across a variety of species and locations. It might be possible to develop a relationship between DBH and Qt with smaller variations when we focused on a single species. We attempted to develop such a relationship for Japanese cypress (Chamaecyparis obtusa), which is one of the major plantation species in Japan. We collated Qt for 51 Japanese cypress trees from nine different-sized and different-aged stands using the sap flux method. We found a strong linear correlation between DBH and the reference value of Qt at a vapour pressure deficit of 1 kPa (R =.883). This was a consequence of a strong correlation between DBH and sapwood area (AS_tree; R =.973) and the absence of a correlation between DBH and sap flux density (R = −.043). We confirmed that using the relationship between DBH and AS_tree, while assuming typical responses of sap flux density to meteorological factors, provides reasonable Qt estimates. This study also demonstrated how the DBH–Qt relationship can be applied to estimate changes in EC with changing forest management.
| 元の言語 | 英語 |
|---|---|
| 記事番号 | e2097 |
| ジャーナル | Ecohydrology |
| 巻 | 12 |
| 発行部数 | 5 |
| DOI | |
| 出版物ステータス | 出版済み - 7 1 2019 |
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All Science Journal Classification (ASJC) codes
- Ecology, Evolution, Behavior and Systematics
- Aquatic Science
- Ecology
- Earth-Surface Processes
これを引用
Relationship between stem diameter and transpiration for Japanese cypress trees : Implications for estimating canopy transpiration. / Tsuruta, Kenji; Komatsu, Hikaru; Kume, Tomonori; Otsuki, Kyoichi; Kosugi, Yoshiko; Kosugi, Ken'ichiro.
：: Ecohydrology, 巻 12, 番号 5, e2097, 01.07.2019.研究成果: ジャーナルへの寄稿 › 記事
}
TY - JOUR
T1 - Relationship between stem diameter and transpiration for Japanese cypress trees
T2 - Implications for estimating canopy transpiration
AU - Tsuruta, Kenji
AU - Komatsu, Hikaru
AU - Kume, Tomonori
AU - Otsuki, Kyoichi
AU - Kosugi, Yoshiko
AU - Kosugi, Ken'ichiro
PY - 2019/7/1
Y1 - 2019/7/1
N2 - Previous studies reported relationships between stem diameter at breast height (DBH) and whole-tree transpiration (Qt) across a variety of species and locations. It might be possible to develop a relationship between DBH and Qt with smaller variations when we focused on a single species. We attempted to develop such a relationship for Japanese cypress (Chamaecyparis obtusa), which is one of the major plantation species in Japan. We collated Qt for 51 Japanese cypress trees from nine different-sized and different-aged stands using the sap flux method. We found a strong linear correlation between DBH and the reference value of Qt at a vapour pressure deficit of 1 kPa (R =.883). This was a consequence of a strong correlation between DBH and sapwood area (AS_tree; R =.973) and the absence of a correlation between DBH and sap flux density (R = −.043). We confirmed that using the relationship between DBH and AS_tree, while assuming typical responses of sap flux density to meteorological factors, provides reasonable Qt estimates. This study also demonstrated how the DBH–Qt relationship can be applied to estimate changes in EC with changing forest management.
AB - Previous studies reported relationships between stem diameter at breast height (DBH) and whole-tree transpiration (Qt) across a variety of species and locations. It might be possible to develop a relationship between DBH and Qt with smaller variations when we focused on a single species. We attempted to develop such a relationship for Japanese cypress (Chamaecyparis obtusa), which is one of the major plantation species in Japan. We collated Qt for 51 Japanese cypress trees from nine different-sized and different-aged stands using the sap flux method. We found a strong linear correlation between DBH and the reference value of Qt at a vapour pressure deficit of 1 kPa (R =.883). This was a consequence of a strong correlation between DBH and sapwood area (AS_tree; R =.973) and the absence of a correlation between DBH and sap flux density (R = −.043). We confirmed that using the relationship between DBH and AS_tree, while assuming typical responses of sap flux density to meteorological factors, provides reasonable Qt estimates. This study also demonstrated how the DBH–Qt relationship can be applied to estimate changes in EC with changing forest management.
UR - http://www.scopus.com/inward/record.url?scp=85065852772&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85065852772&partnerID=8YFLogxK
U2 - 10.1002/eco.2097
DO - 10.1002/eco.2097
M3 - Article
VL - 12
JO - Ecohydrology
JF - Ecohydrology
SN - 1936-0584
IS - 5
M1 - e2097
ER -