摘要
通过生物量和生态位特征分析对香鳞毛蕨生存机制进行研究。对香鳞毛蕨6个自然居群进行野外调查,计算香鳞毛蕨生物量、10个优势种种群生态位宽度与生态位重叠。结果表明,香鳞毛蕨生物量垂直分布与植株高度呈正比,生态位宽度相对较高。香鳞毛蕨与狗尾草、白屈菜、狭叶荨麻生态位相似性比例和生态位重叠值较高,并在一定程度上吻合。由此可知,香鳞毛蕨生境特殊,生境条件被破坏可能是香鳞毛蕨资源受到威胁的主要原因。
To study survival mechanism of Dryopteris fragrans （L.） Schott by analyzing the characteristics of biomass and niche. The six natural sample zones of Dryopteris fragrans were investigated and 10 dominant species were used to calculate the biomass, the niche width of populations and niche overlap inter populations. The results showed that the vertical distribution of Dryopteris fragrans biomass was increased with plant height. Dryopteris fragmns had high comparatively and overlaps of niche with Setaira viridis, Chelidonium majus, and Urtica angustifolia, and anastomosed to a certain degree. It concluded that the special growing environment and the deteriorating habitant condition were probably the main reasons of its endangerment.
出处
《东北农业大学学报》
CAS
CSCD
北大核心
2013年第7期143-148,共6页
Journal of Northeast Agricultural University
基金
国家自然科学基金项目(31070291/C020601)
关键词
香鳞毛蕨
生物量
生态位
生态位重叠值
生境
Dryopteris fragrans（L.） Schott
biomass
niche
niche overlap
ecological environment
