Comparative Ecological Study on Subtropical Forest in Canary

加那利亚热带森林比较生态学研究

• 批准号: 09041146
• 负责人: OHSAWA Masahiko
• 金额: $ 8.58万
• 依托单位: Chiba University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for international Scientific Research
• 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-09041146/
• 关键词: evergreen broad-leaved forest; cloud forest; tree architectural type; bud; leaf; shoot module; topographical gradient; comparative ecology; 雲霧林; シュートモジュール; 土壌要因; 亜熱帯常緑広葉樹林; 階層構造; 尾根-谷傾度; 地形形成; 空中湿度; 温度条件

Anaga cloud forests are the subtropical evergreen broad-leaved forests (so-called laurisilva) developed in the cloud zone of Tenerife, the Canary Islands. The forest-interior was humid conditions of Ca. 90 % RH throughout the year, though the humidity fluctuated depending on the wind direction and the height of trade-wind inversion layer. Soil moisture and nutrient conditions were changed gradually along the topographical habitat (ridge, slope, and valley) ; ridge habitat had high C/N ratio, lower NO_3 concentration, and high pF value comparing to those in valley. Depending on the soil and atmospheric conditions (strong wind, etc.), tree height and leaf-size were small at ridge habitat compared to those in valley. Statistics for all the evergreen broad-leaved tree species found in Anaga forest, most abundant tree traits were hypsophyllary-bud type (82.3 %) and notopyll-class leaf (47 %). These features support the notion that the evergreen cloud forest trees in the Canaries are the relic of the Tertiary tropical/subtropical humid forests once spreading much wider areas surrounding Thethys.

Anaga云森林是亚热带的常绿阔叶林（所谓的Laurisilva），在Tenerife，Canary Islands的云区域开发。森林间的是大约的潮湿条件。全年90％RH，尽管湿度根据风向和贸易逆转层的高度波动。沿着地形栖息地（山脊，坡度和山谷）逐渐改变土壤水分和养分条件；与山谷中的山脊栖息地具有较高的C/N比，NO_3浓度较低，PF值高。根据土壤和大气条件（强风等），与山谷相比，山脊栖息地的树高度和叶子大小很小。在Anaga森林中发现的所有常绿阔叶树种的统计数据，大多数丰富的树状特征是催眠术类型（82.3％）和Notopyll级叶（47％）。这些特征支持这样的概念：金丝雀中的常绿云林木是第三级热带/亚热带潮湿的森林的遗物，曾经在周围扩散了大量较宽的区域。

项目成果

Ohsawa, M.& Nitta, I.: "Patterning of subtropical/warm-temperate evergree broad-leaved forests in east Asian mountains with special reference to shoot phenology" Tropics. 6. 317-334 (1997)

奥泽，M.

Takada M, Miura H, et al.: "Radiocarbon and thermoluminiscence ages from Mt. Riiser-Larsen." Proc. NIPR Symposium on Antarctic Geosciences. 11 (in press).

Takada M、Miura H 等人：“Riiser-Larsen 山的放射性碳和热释光年龄。”

Bhuju, D.R., Ohsawa, M.: "Effects of nature trails on ground vegetation and understory colonization of a patchy remnant forest in an urban domain." Biol. Conserv.85. 123-135 (1998)

Bhuju, D.R., Ohsawa, M.：“自然步道对城市地区斑片残余森林的地面植被和林下殖民化的影响。”

Ohsawa, M., Takashi, E., Nobuyuki, T., Ikeda, H., Nemoto, M.& Hada, Y.: "Impacts on natural ecosystems" Nishioka, S.& Harasawa, H.eds.Global Warming : The Potential Impact on Japan.35-99 Springer.Tokyo. (1998)

Ohsawa, M.、Takashi, E.、Nobuyuki, T.、Ikeda, H.、Nemoto, M.

Takyu M & Ohsawa M: "Distribution and regeneration strategies of major canopy dominants in species-rich subtropical/warm-temperature rainforests in south-western Japan" Ecological Research. 12. 139-151 (1997)

卓久 M