title: [Studies on main interspecific association of rare and endangered medicinal plant Sinopodophyllum hexandrum community in Kangding Zheduo mountain of Sichuan province].
abstract: Based on the 2 x 2 contingency table, by using multi-species relevance (variance ratio, VR), chi2-test, Ochiai index, Dice index, Jaccard index, t-test of v/x and F-test of Morisita, s index, the interspecific relationships and the spatial distribution pattern between 20 dominants in Kangding Zheduo Mountain of Sichuan province were studied. The results indicated that the interspecific association between dominants of Sinopodophyllum hexandrum community in this area did not show significant association, which suggested that the S. hexandrum community was in mature stage, and showed stronger independency, among total 190 pairs in 20 dominant species, 2 species pairs exhibited extremely significantly positive association, 12 species pairs showed significantly positive association, 6 species pairs exhibited significantly negative association and there were no pairs showed extremely significantly negative association. S. hexandrum in community did not show significant association, which indicates they are independent in community, the spatial distribution pattern of S. hexandrum is characterized by random distribution.
authors.forename: Xiang
authors.initials: X
authors.lastname: Liu
authors.forename: Ji-Feng
authors.initials: JF
authors.lastname: Zhao
authors.forename: Chang-Hua
authors.initials: CH
authors.lastname: Wang
authors.forename: Zhi-Wei
authors.initials: ZW
authors.lastname: Zhang
authors.forename: Song-Yun
authors.initials: SY
authors.lastname: Qin
authors.forename: Guo-Yue
authors.initials: GY
authors.lastname: Zhong
mesh_terms: D028141:Berberidaceae / Q000145:classification / Q000254:growth & development*; D044822:Biodiversity; D002681:China; D017753:Ecosystem; D056727:Endangered Species; D010946:Plants, Medicinal / Q000145:classification / Q000254:growth & development*