Silvicultural and ecophysiological research on the responses of regenerated tree seedlings to high CO_2 and sun fleck under forest floor condition

林地条件下再生树苗对高CO_2和阳光斑响应的造林与生态生理研究

• 批准号: 09660155
• 负责人: KOIKE Takayoshi
• 金额: $ 2.18万
• 依托单位: HOKKAIDO UNIVERSITY (1998)Tokyo University of Agriculture and Technology (1997)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09660155/
• 关键词: forest floor; photosynthetic characteristics; high CO2; symbiosis; photosynthetic induction; branching; 浸潤法; 光合成反応; 樹木

In cool temperate forest floor, CO_2 concentration sometimes reaches to 600ppm and water stress is moderate for seedling survival. With development of forest structure, seedlings can efficiently use of sunlight with high CO_2. Photosynthetic characteristics of Sasa (an evergreen shrub bamboo) and Daphne (summer deciduous shrub) was studied in relation to light utilization capacity. These photosynthetic rate increased when top canopy was open in early spring and autumn. Photosynthetic induction time of shade tolerant species was shorter than that of light demanding seedlings. Branching of ash and kalopanax seedlings increased with increasing light intensities more than 20 % against open condition.

在寒温带森林地表，CO_2浓度有时达到600ppm，水分胁迫对于幼苗的生存来说是中等的。随着森林结构的发展，幼苗可以有效利用高CO_2的阳光。研究了笹竹（常绿灌木竹）和瑞香（夏季落叶灌木）的光合特性与光利用能力的关系。当顶部树冠在早春和秋季开放时，这些光合速率会增加。耐荫树种的光合诱导时间短于需光树种。在开放条件下，随着光照强度增加 20% 以上，白蜡树和苦参幼苗的分枝也会增加。

项目成果

Lei, T.T. and Koike, T.: "Some observations of phenology and ecophysiology of Daphne kamtschatica (Maxim.)Ohwi, a shade deciduous shrub, in the forest northern Japan." Journal of Plant Research. 111. 207-212 (1998)

Lei, T.T. 和 Koike, T.：“对日本北部森林中的落叶灌木 Daphne kamtschatica (Maxim.)Ohwi 的物候学和生态生理学的一些观察。”

Koike, T., Izuta, T., Kitao.M., Lei, T.T.and Asanuma, S.: "Effects of high CO_2 on nodule formation in roots f Japanese mountain birch seedlings grown under two nutrient levels" Plant and Soil. 195S. 887-888 (1997)

Koike, T.、Izuta, T.、Kitao.M.、Lei, T.T. 和 Asanuma, S.：“高 CO_2 对在两种营养水平下生长的日本山桦幼苗根部结节形成的影响”植物和土壤。

Umemoto-Mori, M., Izuta, T and Koike, T.: "Application of simple inflitration method for evaluating stomatal patchiness in beech leaves treated with O_3 and high CO_2" Forest Resources and Environment. 36. 1-7 (1998)

Umemoto-Mori, M.、Izuta, T 和 Koike, T.：“应用简单渗透法评估经 O_3 和高 CO_2 处理的山毛榉叶气孔斑块性”森林资源与环境。

Koike, T., Watanabe, T.: "Morphorogical diversity of stomata of representative broadlevaed trees in a temperate region : detection with the Sump method." Forest Resources and Environment. 36. 57-65 (1998)

Koike, T., Watanabe, T.：“温带地区代表性阔叶树气孔的形态多样性：用 Sump 方法检测。”

Lei, T.T.and Koike, T.: "Functional leaf phenotypes for shade and open environments of a dominant dwarf bamboo (Sasa senanensis) in northern Japan" Inter National Journal of Plant Science. 159. 812-820 (1998)

Lei, T.T. 和 Koike, T.：“日本北部优势矮竹 (Sasa Senanensis) 遮荫和开放环境的功能性叶子表型”《国际植物科学杂志》。