【摘要】 <正>福建山地丘陵占全省土地总面积的80%以上,地跨濒海的中、南亚热带气候带,地带性植被常绿阔叶林资源丰富、类型分异。但至今尚未见综合分析全省群落数量特征的正式研究报告。本文为此从植被生态学角度对其群落特征作数量分析,拟为本省自然植被资源的合理开发与保护、农林业生产规划等工作,提供科学依据。一、福建自然地理概况更多还原

【Abstract】 The evergreen broad-leaf forest distributes in the mountain areas of the mid-subtropical and south-subtropical regions in Fujian province. Based on a survey from 74 plots totalling 17500 m~2 of 15 counties(or city),the floristic composition of the communities consists of 361 species of vascular plants, belonging to 210 genera and 97 families, in which the dicotyledon families of Lauraceae, Fagaceae, Rubiaceae, Leguminosae and Theaceae etc. were dominant. Analysis of floristic geographical elements indicated that the percentages of pan-tropical and tropical elements were high, making up 62% and 72% of the total numbers of families and genera respectirvely. The phanerophytes of the medium and miniature leaf size,the herbaceous and thin-coriaceous leaf characters, and of the simple and entire leaf formes are chief elements governing the physiognomy of the communities.In Laurisilvae forest of mid-subtropical region, the chief tree species are Castanopsis eyrei, C. fargesii,C. sclerophylla,C. carlesii and Cyclcbalanopsis glauca etc., and in South-subtropical rain forest region, the chief tree species are Syzygion hancei, Cryptocarya chinensis and Castanopsis hystrix etc.Through the analysis on the agglomerative classification of the dominant trees in the Laurisilvae forest of mid-subtropical region in Fujian,this region can be divided two ecological subregions, i. e. Mid-Fujian subregion and North Fujian subregion. By the determination of typical communities, the Shannon-Wiener’s index of species diversity of these forests, Castanopsis sclerophylla forest, C. eyrei forest, C. kawakamii forest and south subtropical rain forest, were 4 to 5.5. Analysis of the age structure of tree of the forest showed that major tree species or the communities were normal growing types. Therefore these communities exist the characters of relative stability.更多还原