摘要
以秦岭佛坪国家级自然保护区内亚高山草甸30种草本植物为对象,研究了碳、氮在亚高山草甸植物中的分布情况。结果表明:碳、氮在植物组织中总的分布趋势为叶>茎>根,碳/氮在植物组织中的分布为茎>根>叶,方差分析显示碳、氮及碳/氮在植物根、茎、叶中的分布差异极显著(P<0.01)。在单个植物的根、茎、叶中,碳、氮及碳/氮的分布具有种的特异性。在以其光合特征进行聚类分析得到的4个聚类组群中,碳、氮及碳/氮在每个组群根、茎、叶中的分布差异不显著(P>0.05)。
30 species in subalpine meadow of Qinling Mounlains were selected to analyze the distribution pattern of the carbon and nitrogen contents. The results showed that the order of C and N content in plant tissue were leaves〉shoots〉roots, and the C/N ratio was shoots〉roots〉 leaves. Results of One-way ANONA analysis indicated that the distribution of C, N and the C/N ratio in roots, shoots, leaves were significantly different（P（0. 01）and species-specific, and the distribution in four groups based on their gas exchange traits had no significant difference （P〉0.05） among roots, shoots and leaves.
出处
《草业科学》
CAS
CSCD
2008年第10期1-5,共5页
Pratacultural Science
基金
中国科学院"百人计划"项目(0629221C01)
关键词
秦岭
亚高山草甸
碳含量
氮含量
Qinling Mountains
subalpine meadow
carbon content
Nitrogen content
