Species frequency of communities along northern slope of Changbai Mountain, Northeast China
Tóm tắt
The species distribution frequency of communities from 700 m to 1900 m along northern slope of Changbai Mountain was studied by using Raunkiaer's frequency analysis methods in summer of 1999. The variation on composition and structure of communities with the increase of elevation was displayed from the point of view of frequency. The results showed that for all the species of community including tree, shrub and herb, the frequency presented a “L” shape even though there were difference among communities. The percentage of high frequency species increased with the increase of elevation. As one of important index in reflecting species spatial patterns, frequency not only show up the importance of species, but also the evenness of spatial distribution in community. Frequency figure could reveal the complexity and diversity of community at some extent.
Tài liệu tham khảo
Chi Zhenwen. 1981. The primary study on water-heat conditions of forest ecosystem on northern slope of Changbai Mountain [J]. Forest Ecosystem Research, (2): 179–186.
Dale, M.R.T. 1999. Spatial pattern analysis in plant ecology [M]. Cambridge University Press.
Li Wenhua. 1994. Studies on the community characteristics of dark conifer forest of Changbai Mountain[J]. Forest Ecosystem Research, (7): 1–15.
Lin Peng. 1986. Phytocoenology [M]. Shanghai: Shanghai Science and Technique Press.
Magurran, A.E. 1988. Ecological diversity and its measurement [M]. New Jersy: Princeton University Press.
Wang Bosong. 1996. Experimental handbook of Phytocoenology [B]. Guang Zhuo: Guangdong higher education press.
Wang Zhan, Xu Zhenbanget al. 1980. The main forest types and their features of community structure in northern slope of Changbai Mountain [J]. Forest Ecosystem Research, (1): 25–42.
Yang Meihua. 1981. Meterological characteristics and vegetation vertical zones on northern slope of Changbai Mountain [J]. Journal of Meterology,39(3): 311–319.
Zhang Fengshan, Li Xiaoyan. 1984. Some thermal-hydro characteristics of main forest types on northern slope of Changbai Mountain [J]. Forest Ecosystem Research, (4): 243–254.
Zhao Dachang. 1980. The altitudinal distribution belts of vegetation on Changbai Mountain [J]. Forest Ecosystem Research, (1): 65–70.