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Data Collection of Aquatic Plant in Different Environment to the Modeling

不同环境下水生植物的数据采集与建模

基本信息

批准号：
15404015
负责人：
ASAEDA Takashi
金额：
$ 8.7万
依托单位：
Saitama University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2004
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15404015/
关键词：
Growth model Phragmites Typha Eleocharis sphacelata Charophytes R S ratio Latitude Australia Eleocharis shacelata 抽水植物エコロジカルモデリング Eleocharis sphacerata Juncus ingens Baumea arthrophylla 沈水性植物

项目摘要

In order to predict the growth responses for Aquatic plants in different age, water depths, climate condition, and any other environmental factors, Phragmites australis, Typha angustifolia, Zizania latifolia were studied in a natural stand in lake and pond in Japan. Eleocharis sphacelata, Baumea arthrophora, and Juncus ingens were also investigated in Australia.Summary of the main results are as follows.1)As for Phragmites australis, there is a clear variation between rhizome age-classes in belowground resources translocation patterns depending on the season.2)The growth was severely retarded by cutting combined with salinity, which was many implications for better management of Phragmites stands.3)The comparison of the growth performance of Phragmites across the geographic gradient relealed differences in phonological and growth/production traits.4)A dynamic growth model was developed for Typha latifolia and Typha angustifolia that took account of their vertical productive structures, life cycle, shoot height, leaf area and aboveground biomass.5)In contrast to other species, self-thinning of Zizania latifolia shoots reallocates some of the minerals contained in the dead shoots back to the rhizomes, which can be regarded as a strategy to replenish the reduced resources of the rhizomes. And, some submerged plant, Potamogeton perfoliatus, and two species of Charophytes were also investigated.

为了预测水生植物在不同年龄、水深、气候条件和其他环境因子下的生长反应，在日本的湖泊和池塘中，研究了芦苇、香蒲和菰的生长。主要研究结果如下：1）芦苇根茎龄级间地下资源转移规律存在明显的季节性差异; 2）刈割和盐胁迫严重阻碍芦苇的生长; 3）芦苇根茎龄级间地下资源转移规律存在明显的季节性差异; 4）芦苇根茎龄级间地下资源转移规律存在明显的季节性差异。3）不同地理梯度芦苇生长表现的比较表明，芦苇在物候和生长/生产性状上存在差异。建立了宽叶香蒲和狭叶香蒲的动态生长模型，该模型考虑了宽叶香蒲和狭叶香蒲的垂直生产结构、生活史、地上部生物量、枝高、叶面积和地上部生物量。菰枝的自疏作用将枯死枝中的部分矿物质重新分配到根茎中，这可以被视为补充根茎减少的资源的策略。此外，还对沉水植物穿叶眼子菜和轮藻进行了调查。