浙江庆元巾子峰国家森林公园植被群落的数量分类与排序

  目的   了解浙江省庆元县巾子峰国家森林公园中植被群落与环境因子之间的关系。   方法   采用样方调查法调查庆元巾子峰国家森林公园中48个样方的植被群落，并进行数量分类和排序，分析群落类型、分布特征及其与环境因子的相关关系。   结果   ①共调查记录植物66科129属193种。植物物种数较多的科分别为壳斗科Fagaceae(19种)、樟科 Lauraceae(18种)、山茶科 Theaceae(9种)、杜鹃花科Ericaceae(9种)、蔷薇科Rosaceae(9种)、冬青科Aquifoliaceae(6种)、禾本科Gramineae(6种)、茜草科Rubiaceae(6种)、金粟兰科Chloranthaceae(5种)和百合科 Liliaceae(5种)。乔木层优势物种主要为杉木Cunninghamia lanceolata、木荷Schima superba、黄山松Pinus taiwanensis、青冈Cyclobalanopsis glauca、甜槠Castanopsis eyrei、红楠Machilus thunbergii、少叶黄杞Engelhardia fenzelii和拟赤杨Alniphyllum fortunei。灌木层优势种为杜茎山Maesa japonica、草珊瑚Sarcandra glabra、隔药柃Eurya muricata和映山红Rhododendron simsii。草本层优势种为蕨Pteridum aquilinum var. latiusculum、芒萁Dicranopteris dichotoma、黑足鳞毛蕨Dryopteris fuscipes、中华薹草Carex chinensis、白茅Imperata cylindrica、江南卷柏Selaginella moellendorffii和荩草Arthraxon hispidus。②双向指示种分析将植被群落分成10个群丛类型。③10个群丛在去趋势对应分析排序图中呈现有规律的分布，反映了较好的环境梯度。④典范对应分析排序结果表明:影响各群丛分布的最重要环境因子是海拔，其次为土壤类型、土壤温度和坡度；各优势树种的分布特征与各群丛的分布特征具有较好的相似性。   结论   海拔是影响庆元巾子峰国家森林公园植被群落分布的最重要环境因子，海拔对山地植被群落分布具有决定性作用。图4表4参22

Numerical classification and ordination of vegetation communities in Jinzifeng National Forest Park,Qingyuan, Zhejiang

  Objective   The objective is to analyze the relationship between vegetation community and environmental factors in Jingzifeng National Forest Park of Qingyuan County, Zhejiang Province.   Method   Data of 48 quadrats in park were classified and sorted, and the relationship between forest community types, distribution characteristics and environmental factors was analyzed based on these data.   Result   (1)A total of 193 species belonging to 129 genera and 66 families were recorded in 48 plots. The families with abundant plant species were Fagaceae (19 species), Lauraceae (18 species), Theaceae (9 species), Ericaceae (9 species), Rosaceae (9 species), Aquifoliaceae (6 species), Gramineae (6 species), Rubiaceae (6 species), Chloranthaceae (5 species) and Liliaceae (5 species). The dominant species in tree layer included Cunninghamia lanceolata, Schima superba, Pinus taiwanensis, Cyclobalanopsis glauca, Castanopsis eyrei, Machilus thunbergii, Engelhardia fenzelii and Alniphyllum fortunei. The dominant species in shrub layer were Maesa japonica, Sarcandra glabra, Eurya muricata, and Rhododendron simsii. The dominant species in herbaceous layer were Pteridum aquilinum var. latiusculum, Dicranopteris dichotoma, Dryopteris fuscipes, Carex chinensis, Imperata cylindrica, Selaginella moellendorfii and Arthraxon hispidus. (2) TWINSPAN divided the vegetation community into 10 cluster types. (3) The distribution of the 10 clusters in DCA ordination diagram was regular, which reflected a good environmental gradient. (4) CCA ordination results showed that the most important environmental factor affecting the distribution of each cluster was altitude, followed by soil type, soil temperature and slope. The distribution characteristics of the dominant tree species were similar to those of each cluster.   Conclusion   Altitude is the most important environmental factor affecting the distribution of vegetation community in Jinzifeng National Park, and the altitude plays a decisive role in the distribution of mountain vegetation community. Ch, 4 fig. 4 tab. 22 ref.]