长白山林区森林/沼泽交错群落的植物多样性

Plant diversity of ecotone community between forest and marsh in Changbai Mountain

本研究应用样带网格调查方法，对森林／沼泽交错区上６种群落的植物多样性状况、优势种类与分布以及交错区环境梯度进行了研究。结果表明：森林／沼泽交错区植物多样性具有沿着交错区环境梯度逐渐增高的趋势；发育成熟的交错群落具有最高的植物多样性，且高于相对应的典型森林群落。由于交错区群落存在着沼泽植物类群、森林类群以及交错区群落的优势种类群，故发育成熟的交错区群落种类较丰富，一些优势种种群数量为森林中的５倍。因为交错区的生境对于满足这些种类的生活史具有重要作用。森林／沼泽交错群落的特征与交错区环境梯度以及两个植被类型的特征密切相关。

Plant diversity of ecotone community between forest and marsh in Changbai Mountain was studied using whit net check method throughout the ecotone, and the plant diversity, edge effects and their relation with ecotone enviromental gradient in two primary types of ecotone was also investigated, in order to reveal the characteristics and their forming mechanism and provide the theoretical foundation for the conversation and maintainance of plant diversity.. The conclusion is that plant diversity of ecotone community between forest and marsh increases gradually along with the ecotone enviorment gradient in the Changbai Mountain. The mature community processes the highest diversity in the ecotone. It is also higher than that in the corresponding typical forest community. This kind of ecotone community is abundant in species because ecotones contain marsh plants, forest plants and ecotone's dominant species. The amount of some dominant species populations are five times as many as in the forest. So that edge effects exist in this ecotone. These characterristics of ecotone between forest and marsh are related closely with the ecological special properties of plants and the ecotone environmental gradient.