生态与农村环境学报2013，Vol.29Issue(4)：483-488,6.
不同生境薇甘菊土壤种子库与幼苗库的特征
Characteristics of the Seed Banks and Seedling Banks of Mikania micrantha-Invaded Soils Different in Type of Habitat
摘要
Abstract
Characteristics were studied of the seed banks and seedling banks of the five places that are different in habitats but all invaded by M.micrantha in Longchuan County,Dehong Prefecture of Yunnan Province,China,using the method of field sampling and germination test in laboratory.Results show that seeds in the soil samples germinated and were identified to be of 40 plant species belonging to 18 families.They differed in species composition,characteristics and spatial distribution of seed germination and seedling bank between habitats.The M.micrantha seed density of rubber forest,woodlot,bushland,grassland,and river bank,the five different habitats,was 75,109,165,124,and 53 seed · m-2,respectively,showing significant difference between them (P＜0.05).The in-laboratory germination experiment shows that germination of M.micrantha seeds may last for 8 weeks,and concentrated during the period from the 3rd to the 5th weeks.Vertically,its seeds were concentrated mainly in the 0-2 cm soil layer,and then in the ＞2-5 cm layer,and the ＞5-10 cm layer,accounting for 81％,17％,and 2％ of the total seeds in the 0-10 cm soil layer,respectively.In the field,germination of M.micrantha seeds may last for 6 months,that is,from May to October,and was concentrated mainly in the period from June to August.关键词
薇甘菊/生物入侵/土壤种子库/幼苗库Key words
Mikania micrantha/ biological invasion/ soil seed bank/ seedling bank分类
资源环境引用本文复制引用
申时才,徐高峰,张付斗,李天林,金桂梅,张玉华..不同生境薇甘菊土壤种子库与幼苗库的特征[J].生态与农村环境学报,2013,29(4):483-488,6.基金项目
云南省应用基础研究重点项目(2010CC002) （2010CC002）
