香料植物桂花次生林群落的种间分离  

Interspecific Segregation in Osmanthus fragrans Secondary Forest

作　　者：林勇明[1] 吴承祯[1] 洪伟[1] 胡喜生[2] 范海兰[1] 宋萍[1] 

机构地区：[1]福建农林大学林学院,福建福州350002 [2]福建农林大学交通学院,福建福州350002

出　　处：《山地学报》2010年第4期437-443,共7页Mountain Research

基　　金：教育部博士点学科专项基金资助项目(No.20090315120008);福建农林大学科研青年基金资助项目(2009006)~~

摘　　要：基于野外调查数据,对福建省长汀县石峰寨风景区桂花次生林群落36个10m×10m样方内所有高度≥1.5m且个体株数>10的物种个体绘制空间分布图,应用最近邻体法判定每个个体的最近邻体植株,然后采用N×N最近邻体列联表的截表法研究桂花次生林群落的种间分离规律。结果表明:在14个主要树种形成的91组种对中,绝大多数种对的种间关系表现为显著正分离(占61.54%),如桂花与云山青冈、檵木与大叶桂樱、小构树与盐肤木等;其他种对表现为随机毗邻(占38.46%),如桂花与檵木、枫香与米槠、米槠与苦槠等,没有出现显著负分离种对。呈正分离的种对,可能是因为人为干扰和物种生态特性而形成的。在此基础上,应用检验法研究了桂花次生林中物种的总体分离规律。结果表明:桂花次生林中14个物种互相交错分布,是全面不分离的。同时,对群落种间联结与种间分离的关系进行分析,得出正联结的物种不一定存在着负分离的关系。In order to understand the interspecific segregation in Osmanthus fragrans forest, we investigated 36 quadrats with 10 m × 10 m and drew a distribution map of all trees with H ≥ 1.5 m and species numbers 〉 10. Based on the data, using coefficient of segregation by the subtable of the N x N nearest-neighbor contingency able, the interspecific segregations of the tree species in Osmanthus fragrans forest were studied. The result of interspecif- ic segregation indicated that the most of the species-pairs （such as Osmanthus fragrans-Cyclobalanopsis nubium, Loropetalum chinensis-Laurocerasus zippeliana, Broussonetia kazinoki-Rhus chinensis and so on）were positively seg- regated （61.54%）, only a few species-pairs（ such as Osmanthusfragrans-Loropetalum chinensis, Liquidambarfor- ＇mosana-Castanopsis carlesii, Castanopsis carlesii-Castanopsis sclerophyUa and so on ）were randomly segregated （38.46%） disturb and , no negatively segregated pairs were found. The pairs tended to be positively segregated, due to human their ecological characteristics. In addition, the overall segregated pattern in all species in the commu- nities was studiedχ2 by test based on the N x N nearest-neighbor contingency table. The result showed that 14 stud- ied species overlapped in distribution and were characterized by overall non-segregation. Meanwhile, the relation- ship between interspecific segregation and interspecific association was analyzed that the pairs with significant positive association were not negatively segregated pairs.

关 键 词：桂花 次生林群落 种间分离 

分 类 号：S718.54[农业科学—林学]