Removal of understory dwarf bamboo (Sasa kurilensis) induces changes in water-relations characteristics of overstory Betula ermanii trees
Removal of understory dwarf bamboo (Sasa kurilensis) induces changes in water-relations characteristics of overstory Betula ermanii trees
复制标题
林下矮竹（Sasa kurilensis）的去除会导致林间桦树的水分关系特征发生变化
DOI：
10.1007/s10310-007-0058-0
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发表时间：
2008
影响因子：
1.5
通讯作者：
T. Hara
中科院分区：
文献类型：
--
作者：
H. Ishii;Tsuyoshi Kobayashi;S. Uemura;Koichi Takahashi;Y. Hanba;A. Sumida;T. Hara
研究了林下矮竹（Sasa kurilensisMakino et Shibata）砍伐对桦幼树生长和水分利用的影响。日本北部次生林中的树木。我们比较了白杨当年茎部形态、叶片水分关系特征和全树水分利用。林下带矮竹生长的德国树（完整样地）与实验去除矮竹生长的树木（去除样地）。拔除矮竹后，当年茎长和节间频率增加，节间长度和单叶面积减少。叶片碳同位素组成δ13C没有变化，表明叶片水分利用效率不受矮竹存在与否的影响。压力-体积分析表明，去除区叶片的吸水能力较低。盛夏期间，去除样地树液流速度在正午达到峰值后保持较高，而完好样地树液流速度下降。此外，全树液通量和土壤-叶片水力导度均较高。我们推测观察到的变化反映了b的水力稳态。德国树保持恒定的水分利用效率，以应对与矮竹的地下竞争。因此，去除矮竹是一种有效的造林处方，通过缓解地下对土壤水分的竞争来促进上层树木的生长。
We investigated how removal of understory dwarf bamboo (Sasa kurilensisMakino et Shibata) affected growth and water use of youngBetula ermaniiCham. trees in a secondary forest in northern Japan. We compared current-year shoot morphology, leaf water-relations characteristics, and whole-tree water use ofB. ermaniitrees growing with dwarf bamboo in the understory (intact plot) to those of trees growing where dwarf bamboo was experimentally removed (removal plot). Current-year shoot length and internode frequency increased, while internode length and individual leaf area decreased in response to dwarf bamboo removal. Carbon isotope composition (δ13C) of leaves did not change indicating that leaf water-use efficiency was unaffected by the presence/absence of dwarf bamboo. Pressure–volume analysis indicated that leaves in the removal plot had lower water uptake ability. During mid-summer, trees in the removal plot sustained high sap flow velocity after peaking at midday, while that of trees in the intact plot declined. In addition, whole-tree sap flux and soil-to-leaf hydraulic conductance were both higher for trees in the removal plot. We inferred that the observed changes reflect hydraulic homeostasis ofB. ermaniitrees to maintain constant water-use efficiency in response to belowground competition with dwarf bamboo. Removal of dwarf bamboo is, therefore, an effective silvicultural prescription to enhance growth of overstory trees by relieving belowground competition for soil water.
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影响因子：
2
作者：
Noguchi, M;Yoshida, T
通讯作者：
Yoshida, T
日本北部混交林土壤松土后影响早期植被建立的因素。
DOI：
--
发表时间：
2005
期刊：
Canadian Journal of Forest Research 35(印刷中)
影响因子：
--
作者：
Noguchi M.;Yoshida T.;Yoshida T.et al.(他4名)
通讯作者：
Yoshida T.et al.(他4名)
影响因子：
6.4
作者：
Kitao, M;Lei, TT;Maruyama, Y
通讯作者：
Maruyama, Y
通过清除森林地面的林下植被和 A0 地平线来恢复患有松枯萎病的松林。
DOI：
--
发表时间：
--
期刊：
J.J.Jpn.Soc.Revege.Tech. 30(1)
影响因子：
--
作者：
Sakamoto;K.;Ishii;A.;Nishimoto;T.;Miki;N.;Yoshikawa;K.
通讯作者：
K.