武功山退化山地草甸土壤种子库的研究  

Soil seed bank of degraded mountain meadow in Wugong Mountain

作　　者：彭辉武 刘忠华 李萍球 王伯民 潜伟平 刘江华 邓树波 

机构地区：[1]萍乡市林业科学研究所,江西萍乡337000 [2]萍乡市南坑林场,江西萍乡337000 [3]萍乡市森林资源监测中心,江西萍乡337000

出　　处：《生态科学》2016年第1期98-102,共5页Ecological Science

基　　金：武功山山地草甸生态修复技术研究及示范(2012BAC11B06)

摘　　要：采用典型样地法研究了武功山重度退化、中度退化和无退化三种类型山地草甸的土壤种子库特征。结果表明:武功山山地草甸主要建群种为五节芒(Miscanthus floridulus)和毛秆野古草(Arundinella anomala);草甸生活型以多年生草本为主,其物种多样性表现为菊科>禾本科>唇形科>毛茛科。重度和中度退化草甸上物种数仅占无退化草甸的8.3%和19.4%。重度退化、中度退化和无退化三种类型草甸表层土壤(0—10 cm)种子密度差异极显著(P<0.01),分别为764粒?m–2、1371粒?m–2、2355粒?m–2。三种退化类型土壤种子库在空间垂直分布上表现为随土壤深度的增加而减少,随着海拔高度的增加而降低。Soil seed bank was investigated in three types of mountain meadows with severe degradation, moderate degradation and non-degradation using typical-plot method. The results showed that the dominant species are Miscanthus floridulus and Arundinella anomala in study area; the life-forms in the meadow were mostly perennial herb, species diversity demonstrated as Compositae 〉Gramineae〉Labiatae〉Ranunculaceae, and quantities of species in severely and moderately degraded meadows were only 8.3% and 19.4% of those in non-degradation meadow. Seed densities in upper soil of 0-10 cm were significantly different among three types of meadow, and they were 764 seed·m^（–2）, 1371 seed·m^（–2） and 2355 seed·m^（–2）, respectively. Soil seed density decreased with increase of soil depth, and also showed a declined trend with increased altitude.

关 键 词：武功山 土壤种子库 退化草甸 种子库 五节芒 毛秆野古草 植被恢复 

分 类 号：S155.4[农业科学—土壤学]