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- W2369037427 abstract "A series of parameters including χ2-test, interspecific association coefficient (AC), Person’s correlation coefficient (r), variance ratio (VR), and total number of species pairs which do not exist synchronously in a given quadrat size (Na) were used to study the interspecific associations and their relationships with quadrat sizes of the dominant tree species in Quercus wutaiensis communities in Ziwu Mountain of Loess Plateau. Based on the 2×2 contingency table and species abundance data, the effects of different quadrat size on these parameters were examined. The χ2-test and AC analyses showed that significant interspecific associations only appeared at the quadrat sizes of 25 m2 and 50 m2. Person’s correlation analysis displayed that there were significant interspecific associations at the quadrat sizes from 25 to 200 m2, and the r value changed steadily at the quadrat sizes from 25 to 100 m2. However, VR didn’t disclose the overall associations of multi-species at different quadrat sizes. The fluctuation of Na was the smallest when the quadrat size was 100-200 m2 and the number of quadrats was 40-80. In order to reveal the relationships between species pairs more exactly, the quadrat size should be 100 m2, and the number of quadrats should be 45. Under such conditions, the interspecific associations of the tree species in Q. wutaiensis communities in Ziwu Mountain of Loess Plateau could be measured objectively." @default.
- W2369037427 created "2016-06-24" @default.
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- W2369037427 date "2008-01-01" @default.
- W2369037427 modified "2023-09-22" @default.
- W2369037427 title "Interspecific association of trees species in Quercus wutaiensis communities in Ziwu Mountain related to quadrat size" @default.
- W2369037427 hasPublicationYear "2008" @default.
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