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Species composition and correlation of understory woody plants in Chinese fir plantation in the lower subtropical area

引用

Frontiers in Biology 2006年第4期1卷 423-429页

作者： KANG Bing LIU Shirong CAI Daoxiong WEN Yuanguang College of Life Sciences Northwest Sci-Tech University of Agriculture and ForestryYangling 712100China Institute of Forest Ecology Environment and Protectionthe Chinese Academy of ForestryBeijing 100091China Experiment Center of Tropical Forestry the Chinese Academy of ForestryPingxiang 532600China Forestry College Guangxi UniversityNanning 530001China

There are 71 species in the shrub layer of the Cunninghamia lanceolata plantation after natural *** species richness and diversity have increased with slight anthropogenic *** status and function of understory woody species were judged by the analysis of the important value(IV).χ2 statistics and r test were used for testing the significance of interspecific association and correlation among 25 main understory woody plants selected from the woody *** results clearly showed their interspecific relationships and their differences in resource ***-pairs of positive association were in the *** species were accommodated in the shady *** was a positive correlation between the IV of the species and the interspecific *** higher the IV of the species,the closer and more significant was the interspecific *** on analytical results of interspecific association and correlation,25 woody plants in the shrub layer could be divided into four ecological species groups:*** hispida+Antidesma bunius+Mallotus barbatus+Ficus cunia+Saurauia tristyla+Mallotus philippinensis+Maesa japonica+Ficus hirta+Alchornea rugosa+Ficus fulva+Mallotus apelta;*** tricuspidata+Schefflera octophylla;*** lanceolata+Clerodendron cytophyllum+Millettia semicastrata+Randia spinosa+Litsea cubeba+Litsea pungens;*** japonica+Psychotria rubra+Vitex quinata+Cephalanthus occidentalis+Pithecellobium lucidum+Mycetia *** species group III or II is the advantaged species in the shrub layer,the community would change from a coniferous forest to a sparse evergreen broad-leaved *** group IV,the community would be relatively *** group I,the coniferous forest would be mixed with coniferous-broad leaved *** classification of ecological species groups would provide a theoretical basis on judging its ecological function,adjusting the stand structure of the plantation and direct

关键词： the lower subtropical area Cunninghamia lanceolata man-made forest close-natural state understory shrub composition interspecific association and correlation ecological species groups

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