CAJ | 학술논문

2013年8月，在云南巧家县药山自然保护区，设置两块乔木样地，进行调查，在2×2列联表基础上，应用χ2检验、联结系数（ AC）、 Jaccard （ JI）指数以及点相关系数（φ）检验巧家药山珙桐群落的种间联结性。结果表明，珙桐群落中种间联结程度不高，有17种对呈现显著正联结性。大多数种对间的联结度低，存在极大排斥性的种对较少。珙桐与白楠、野茉莉之间存在显著正联结性；珙桐与川冬青、领春木之间存在显著负联结性。八角枫与8种植物之间存在正联结性，说明八角枫对群落的稳定性起重要作用。川冬青与野八角、野茉莉、云南枫杨之间存在显著的正联结性，表明川冬青可能是群落的关键种。珙桐与常绿树种成正联结性的较多而与落叶树种成负联结性的较多。
2013년8월，재운남교가현약산자연보호구，설치량괴교목양지，진행조사，재2×2렬련표기출상，응용χ2검험、련결계수（ AC）、 Jaccard （ JI）지수이급점상관계수（φ）검험교가약산공동군락적충간련결성。결과표명，공동군락중충간련결정도불고，유17충대정현현저정련결성。대다수충대간적련결도저，존재겁대배척성적충대교소。공동여백남、야말리지간존재현저정련결성；공동여천동청、령춘목지간존재현저부련결성。팔각풍여8충식물지간존재정련결성，설명팔각풍대군락적은정성기중요작용。천동청여야팔각、야말리、운남풍양지간존재현저적정련결성，표명천동청가능시군락적관건충。공동여상록수충성정련결성적교다이여락협수충성부련결성적교다。
In August of 2013, in Yaoshan Mountain Nature Reserve of Qiaojiao County in Yunnan, two tree sam-ple plots were set for investigation.Based upon a 2 ×2 contingency table, a series of techniques includingχ2 test, association coefficient ( AC) and Jaccard index ( JI) were used to determine interspecific association among Davidia involucrata Community.The results showed that the interspecific association was not strong, and only 17 pairs of species exhibited significantly positive association.There was a low association degree between most pairs of spe-cies;meanwhile few pairs of species were extremely exclusive to each other.Davidia involucrata was extremely positively associated with Phoebe neurantha and Styrax macranthus, but extremely negatively associated with Ilex szechwanensis and Euptelea pleiosperma.The fact that Alangium chinensis were positively associated with 8 species showed that it was stable plant in community and played an important role in maintaining the stable structure of D.involucrata Community.Ilex szechwanensis was a key species, because it was extremely positively associated with the three plants such as Illicium simonsii, Styrax japonicus and Pterocarya delavayi, Davidia involurata were more positively associated with evergreen trees, and negatively associated with deciduous trees.