Data Collection of Aquatic Plant in Different Environment to the Modeling

为了预测不同树龄、不同水深、不同气候条件及其他环境因素对水生植物生长的影响，以日本湖泊和池塘的天然林分为研究对象，对芦苇（Phragmites australis）、竹叶（Typha angustifolia）和紫穗槐（Zizania latifolia）进行了研究。在澳大利亚也调查了Eleocharis sphacelata， Baumea arthrophora和junus ingens。主要研究结果总结如下。1)芦苇地下资源迁移模式在不同季节的根茎年龄级之间存在明显差异。2)刈割和盐碱化对芦苇林分的生长有严重的抑制作用，这对芦苇林分的合理管理具有重要意义。3)不同地理梯度芦苇生长性能的比较揭示了音韵和生长/生产性状的差异。4)建立了考虑垂向生产结构、生活期、茎高、叶面积和地上生物量等因素的风叶和细叶风叶动态生长模型。5)与其他物种相比，紫穗槐枝条的自疏可将死梢中所含的部分矿物质重新分配给根茎，可视为根茎资源减少的一种补充策略。此外，还调查了一些沉水植物——透叶薯蓣和两种绿叶植物。

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.