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- W3141489373 abstract "The study on the relationship between herb plants a nd their environments is very important for understanding herb diversity pattern s. The study area is located on the northern slope of Changbai Mountain where th ere is not only a high diversity in vegetation types and species, but also high variation of diversity pattern along the altitude gradient. There exists obvious environmental gradient and species compositions are varied obviously along alti tude gradient. It is a perfect transect for the research of biodiversity and gra dient patterns. From altitude 700m to 2600m on northern slope of Changbai Mounta in, 20 plots were sampled with an interval of 100 m along the altitude gradient. In each plot, the ecological important values of herbs, together with 13 enviro nmental variables including weather, soil factors,canopy density, etc. were obt ained. The data were analyzed with the method of Canonical Correspondence Analys is (CCA). The species,plots environment biplots were drawn based on the resu lt of CCA, and the relationships between the ecological distribution of the species and communities with the 13 environmental factors were clearly revealed on thes e biplots. 20 plots could be divided into 2 groups, which corresponded the tundr a and forest vegetation. Furthermore, forests could be divided into 3 groups, wh ich corresponded Broad leaved Korean pine forest, Dark coniferous forest and Betula ermanii forest. Same as the plots, herb species also could be divided i nto 2 groups, which were tundra species and forest species. There were a high co possession of herb species among the different forest types along the altitude gradient. On the contrary, there were a low co possession of herb species betw een the tundra and forests. The herb communities on the tundra were distinctivel y different from those on the forests under altitude 2000m. As a comprehensive e xpress of many ecological factors such as precipitation, temperature, soil facto rs, etc, altitude was a key environmental variable for herb species patterns. Be sides altitude, canopy density was one of the important factors for influencing the ecological distribution of the herb species in forests according to the corr elation coefficients of the environmental variables with the first two axes." @default.
- W3141489373 created "2021-04-13" @default.
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- W3141489373 date "2003-01-01" @default.
- W3141489373 modified "2023-09-25" @default.
- W3141489373 title "Canonical correspondence analysis on relationship of herbs with their environments on northern slope of Changbai Mountain" @default.
- W3141489373 hasPublicationYear "2003" @default.
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