克隆性对竹林生产力和拓展能力的影响机制

竹子是我国森林资源的重要组份，也是我国林业的重要新兴产业，在当前林业建设中发挥着非常重要的作用。竹子是典型的木本克隆植物，克隆性对竹子的适应性有十分重要的贡献。尽管国内外已经开展了大量有关克隆性对克隆植物适应性的研究，但这些研究绝大多数是针对易于操作的草本克隆植物开展的，而有关克隆性对木本克隆植物，有其是竹子生长的影响却缺乏系统性的研究。本项目以三种竹子（大型竹、小型竹和地被竹各一种）为研究对象，结合野外和温室控制实验及稳定性同位素示踪，系统地研究克隆整合、克隆可塑性（觅食反应）和克隆存储对竹子纵向生长（如生物量和株高）和水平生长（如竹株扩散和竹鞭生长）的影响，揭示克隆性对竹林生产力和水平拓展的影响机制，丰富和发展竹子生物学和克隆植物生物学理论，制定基于克隆性的竹林生产力和水平拓展的调控方案，为竹林经营提供理论和技术支撑。

Bamboos are an important component of forest resources in China, and also an important emerging industry in China's forestry. Thus, they play a very important role in the current forestry development in China. Bamboos are typical woody clonal plants, and clonality must have contributed greatly to the adaptation of bamboos. While numerous studies have examined effects of clonality on the adaptation of clonal plants, the majority of them have dealt with herbaceous clonal plants, and a systematic study testing the contribution of clonality to the growth of woody clonal plants, especially bamboos, is still lacking. We selected three bamboos, i.e. a giant bamboo, a small bamboo and a dwarf bamboo, as our study species. Combining field and greenhouse experiments and stable isotope tracing, we systemically examined effects of clonal integration, clonal plasticity (foraging response) and clonal storage on the vertical growth (e.g. biomass and height) and horizontal growth (e.g. horizontal spread of new bamboo shoots and rhizomes) of bamboos. We aim at disclosing mechanisms underlying the effects of clonality on the productivity and horizontal spread of bamboo forests, and contributing to the theories of bamboo biology and clonal plant biology. Based on the results, we will also design the clonality-based control of the productivity and horizontal spread of bamboo forests, and provide theoretical and technical support for the management of bamboo forests.