河岸带植物功能性状、水淹耐受能力与丰度的相关性研究

植物的功能性状能够客观表达植物对外部环境的适应性。水淹是一种河岸带植物经常遭受的环境胁迫，河岸带植物功能性状与其水淹耐受能力，以及在河岸带的丰度之间可能存在相关关系，而目前这方面的研究还十分有限。以常见的河岸带植物为研究对象，以生态计量学、实验生态学和植物生理生态学理论为基础，结合温室模拟水淹实验和野外植物功能性状调查的方法，研究河岸带植物功能性状与其水淹耐受能力，以及在河岸带的丰度之间的相关关系；进而筛选出能有效衡量植物水淹耐受能力的关键性功能性状指标。河岸带植被构建关键在于对耐淹物种的筛选，而为有效地筛选耐淹物种需要对植物的功能性状进行深入的研究。因此，本研究不仅具有重要的理论价值，也将为退化河岸带植被的恢复和重建提供理论依据。

Plant functional traits are indicators of the plant′s adaptation to environmental conditions. For riparian species, submergence stress is one of the common environmental challenges. Therefore, we will try to investigate the correlations among functional traits, flood tolerance and abundance of riparian species, which is still unknown. Based on ecological stoichiometry, experimental ecology and plant ecophysiology, 20 sites selected from typical riverbank in China will be investigated and the flood tolerance of riparian species distributed at these sites will be evaluated in greenhouse condition. The correlations among functional traits, flood tolerance and abundance of riparian species will be investigated; the efficient functional traits of riparian species which are closely correlated with flood tolerance will be selected. Selection of flood-tolerant species is vital for restoration of riparian revegetation, and further investigation in functional traits of riparian plants is important for the selection of flood-tolerant species. Thus, the findings will not only improve the theoretic researches on wetland plant ecology, but also play an instructive role for restoration of riparian vegetation.