Multi-dimension models of architectural development in forest tree populations

森林树群建筑发育的多维模型

• 批准号: 07304051
• 负责人: KOHYAMA Takashi
• 金额: $ 5.76万
• 依托单位: HOKKAIDO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07304051/
• 关键词: forest tree population; forest tree community; model; leaf mass; size structure; dynamics; 個体群; 相互作用; モニタリング; 移流拡散モデル; 格子モデル; 森林動態; 葉量分布; 理論解析

Developmental processes of forest tree populations regulated by among-tree interactions were examined, with special reference to the architectural performance of tree individuals. Particular effort was paid to develop new mathematical models and quantitative monitoring techniques.(1) Architectural performance of a tree is characterized by a set of such parameters as trunk diameter, top height, crown volume, and leaf mass. To evaluate plastic response of architectural performance, two-dimensional size dynamic model was developed, and pattern of stand development was examined.(2) Dynamics of the horizontal forest pattern was modeled by employing the concept of two-layred lattice model, and the stability in two-species systems were analytically examined.(3) Recruitment rate, as a key parameter of forest population dynamics, is difficult to measure in field censuses. A new technique of estimating recruitment rate, named Gf estimation, was developed.(4) Non-destructive technique of the estimation of leaf mass distribution was developed using CCD camera.(5) Significance of leafing pattern on a shoot was evaluated by a simple dynamic architecture model.

研究了受树间相互作用调控的树木种群的发育过程，并特别关注了树木个体的建筑性能。特别努力发展新的数学模型和定量监测技术。(1)树木的建筑性能由树干直径、树冠高度、树冠体积和叶片质量等一系列参数来表征。为了评价林分结构的塑性响应，建立了林分结构的二维尺度动力学模型，并对林分的发育规律进行了研究。(2)采用双层格模型的概念建立了水平森林格局的动力学模型，并对两种系统的稳定性进行了分析。(3)森林种群增殖率作为森林种群动态的关键参数，在野外普查中难以测量。提出了一种估算招聘率的新方法——Gf估计。(4)利用CCD相机开发了叶片质量分布无损估计技术。(5)采用简单的动态结构模型评价了叶片格局的意义。

项目成果

Kohyama,T: "Spatial and temporal patterns of subalpine Abies forests in Central Japan.In E.O.Box,ed.," Vegetation Science in Forestry. 391-407 (1995)

Kohyama,T：“日本中部亚高山冷杉森林的时空格局。In E.O.Box,ed.，”林业植被科学。

Kohyama, T., P.J.Bellingham & Aiba, S.: "The effects of a typhoon on japanese warm temperate rainforests." Ecological Research. 11. 229-247 (1996)

小山，T.，P.J.贝灵厄姆

Kikuzawa, K.: "Effect of canopy structure on degree of asymmetry of competition in two forest stands in northern Japan" Annals of Botany. (in press). (1996)

Kikuzawa, K.：“冠层结构对日本北部两个林分竞争不对称程度的影响”《植物学年鉴》。

Kubota, Y. Hara, T.: "Allometry and competition between saplings of Picea jezoensis and Abies sachalinensis in a sub-boreal coniferous forest, northern Japan" Annals of Botany. 77(in press). (1996)

Kubota, Y. Hara, T.：“日本北部亚寒带针叶林中的 Jezoensis 云杉和 Sachalinensis 树苗之间的异速生长和竞争”《植物学年鉴》。

Kikuzawa,K: "Leaf phenology as an optimal strategy for carbon gain in plants" Canadian Journal of Botany. 73. 158-163. (1995)

Kikuzawa,K：“叶子物候学作为植物碳增益的最佳策略”加拿大植物学杂志。