摘要
根据野外样方法调查的3个样地资料,应用方差分析和多重比较方法分析,对秦岭华北落叶松人工林群落结构及物种多样性进行了研究。结果表明:(1)秦岭人工华北落叶松林以纯林为主,林下层次结构简单,是以华北落叶松为建群种,悬钩子、苔草为优势种的群落;植物种数是草本层>灌木层>乔木层。(2)该区华北落叶松人工林为中龄林,华北落叶松分布在几个不同的年龄段;相同年龄的华北落叶松胸径有所不同。(3)各层物种α多样性分析结果均显示出草本层>灌木层的特点。
Based on the data collected from the 3 sample plots, the community structure and species diversity of the Larix principis - rupprechtii plantation in Qinling Mountains was studied by the methods of one - way ANOVA and multiple comparisons. The results showed that： Firstly, the Larix principis - rupprechtii plantations were mostly pure and simple in the understory structure; the number of plant species showed that herb layer 〉 shrub layer 〉 tree layer; the constructive species of the community is Larix principis - rupprechtii and the dominant species are Rosa rubus and Carex lanceolata. Secondly, the Larix principis - rupprechtii plantation in Qinling are middle aged forest and distributed in different ages ; but the same age don＇ t mean the same DBH. Thirdly, Richness index, Diversity index, Simpon index and Evenness index of different layers showed that herb layer 〉 shrub layer in this area.
出处
《安徽农学通报》
2008年第15期159-162,204,共5页
Anhui Agricultural Science Bulletin
关键词
秦岭
华北落叶松
人工林
群落结构
物种多样性
Qinling Mountains
Larix principis - rupprechtii
plantation
community structure
species diversity
