长白山红松阔叶林及其次生林草本植物多样性季节动态研究

研究了原始红松阔叶林及其次生林草本植物物种组成及多样性动态,共记录了179种草本植物,其中红松阔叶林125种,次生林160种。红松阔叶林及其次生林草本植物的月季动态变化明显,物种数、Simpson多样性指数、Shannon-wiener指数及均匀度指数均表现为先增加再减小。不同月份次生林内草本物种数均明显高于红松阔叶林。红松阔叶林下草本植物垂直方向呈现明显的分层现象;在整个生长季内,次生林下草本植物高度均大于红松阔叶林。

Study on the Dynamics of Herbs' Diversity in Korean Pine Broad-leaved Forest and Secondary Forest in Changbai Mountains

The dynamics of diversity of woodland herbs was studied in Korean pine broad-leaved forest and secondary forest.Results show that the diversity has a great change in different months.There are about 179 species of herbs being surveyed in the study,in which 125 species are found in Korean pine broad-leaved forest,and 160 species in relevant secondary forest.The species and biodiversity have changed obviously between months.The number of species,the Simpson index,the Shannon-wiener index and the Evenness index are all in a process of increase,and then decrease.The number of species in relative secondary forest is obviously more than in Korean pine broad-leaved forest. There are more obviously vertical laminations for the herbs' height in Korean pine broad-leaved mixed forest.And over the whole growing season,the average height in the secondary forest is higher.The article tries to discuss the inner rule of herbs' diversity in a steady ecosystem formed by Korean pine broad-leaved mixed forest.