淡水湿地种子库的研究方法、内容与展望

Research method,content,and prospect on seed bank of freshwater wetland

种子库是指存在于土壤表面和土壤中全部存活种子的总和。种子库的研究是深入探讨湿地植被结构、功能与动态等方面的重要基础,同时也是对湿地生物多样性研究的一个重要补充,对于了解植被演替动态、植被更新和受损湿地植被重建与恢复具有指导意义。本文结合国内外淡水湿地种子库研究现状,对湿地种子库的形成、研究方法以及湿地种子库时空格局、种子库与地表植被的关系、水文变化对湿地种子库的影响、湿地种子库在湿地恢复中的应用等主要研究内容进行了系统的总结;同时对湿地种子库的时间动态、种子库的分类、种子库与地表植被的关系、湿地恢复重建及湿地景观营造等研究进行了展望。

Seed bank is defined as the summation of viable seeds existing on soil surface and in soil. The study of seed bank is an important basis for exploring the structure, function, and dynamics of wetland vegetations, and also, an important complementarity in studying wetland biodiversity, being of directive significance in understanding the dynamics of vegetation succession, vegetation regeneration, and vegetation restoration of damaged wetland. Based on the researches about the seed bank of freshwater wetland at home and abroad, this paper summarized the forma- tion of wetland seed bank, its study methods, temporal and spatial distribution patterns, relationships with vegetation composition, effects of hydrology on the composition of the seed bank, and applications of the seed bank in wetland restoration. The future researches about the temporal dy- namics of wetland seed bank, classification of the seed bank, relationships between the seed bank and vegetation composition, and construction of wetland landscape by using the seed bank were also prospected.