摘要
应用物种多样性的Ｓｈａｎｎｏｎ－Ｗｉｅｎｅｒ指数（Ｈ）、均匀度（Ｊ）、生态优势度（Ｃ）等指标，测定了北京九龙山１８个天然次生灌丛植物群落的物种多样性、均匀度和生态优势度。结果是：Ｈ为１．５５～３．４４，Ｊ为０．５４～０．８９，Ｃ为０．１２～０．４１。物种多样性随生境条件渐好、海拔的递增以及群落结构的复杂性而递增。物种多样性与群落结构有密切关系，它随均匀度增大而增加，与生态优势度的增加而递减。这项研究有助于对水土保持天然灌木林结构模式的研究水平的提高。
The species diversity of 18 bush communities of Jiulongshan in Beijing are
measured by means of Shannon Wiener index,And community evenness and ecological
dominance of these plant communities are measured also,The Shannon Wiener species
di-versity index is around 1.55～3.44,the communities evenness 0.54～0.89,and the
ecological dominance 0.12～0.47.The species diversity increases as the habitat condition
becomes bet-ter,latitude higher,and commtinity structure more complicated.The species
diversity has in-timate correlation with community structure,which goes up with the ascent of
commtinity evenness and goes down when the ecological dominance increases. The restilt of
the research will help to raise the level of study on the structure model of natural shrub forest
for water and soil conservation.
出处
《林业科学研究》
CSCD
北大核心
1994年第2期143-148,共6页
Forest Research
基金
"八五"攻关课题
关键词
北京
灌丛植被
物种多样性
Beijing,bush vegetation ,species
diverdity,community evenness,ecological dominance
