摘要
在野外调查的基础上,应用TWINSPAN,DCA和DCCA对山西华北落叶松群落进行分类和排序研究。结果表明,依据不同的指示种将40个样地分划为10个群丛:华北落叶松-三裂绣线菊-披针薹草群丛、华北落叶松-金银忍冬-披针薹草群丛、华北落叶松-土庄绣线菊+金银忍冬-披针薹草群丛、华北落叶松-小卫矛-糙苏群丛、华北落叶松-土庄绣线菊-林地早熟禾群丛、华北落叶松-刚毛忍冬-东方草莓+披针薹草群丛、华北落叶松-东北茶藨子-披针薹草群丛、华北落叶松-披针薹草群丛、华北落叶松-刚毛忍冬-北柴胡群丛和华北落叶松-银露梅-东方草莓群丛;DCA的排序结果显示,影响华北落叶松群落物种分布的主导因子是温度、海拔及水分条件;DCCA的排序结果显示,华北落叶松群落物种的分布与海拔呈正相关,与坡向呈负相关。
Based on the dataset including 40 quadrats from the field investigation, the classification and ordination of Larix principis-rupprechtii communities in Shanxi were studied by TWINSPAN, DCA and DCCA, respectively. The results indicated that the communities were classified into 10 associations, which was Ass. Larix principis-rupprechtii-Spiraea trilobata-Carex lancifolia, Ass.Larix principis-rupprechtii-Lonicera maackii-Carex lancifolia, Ass. Larix principis-rupprechtii-Spiraea pubescens ＋Lonicera maackii-Carex lancifolia, Ass. Larix principis-rupprechtii-Euonymus nanoides-Phlomis umbrosa, Ass. Larix principis-rupprechtii-Spiraea pubescens-Poa nemoralis, Ass. Larix principis-rupprechtii-Lonicera hispida-Fragaria orientalis ＋Carex lancifolia, Ass. Larix principis-rupprechtii-Ribes mandshuricum-Carex lancifolia, Ass. Larix principis-rupprechtii-Carex lancifolia, Ass. Larix principis-rupprechtii-Lonicera hispida-Bupleurum chinense and Ass. Larix principis-rupprechtii-Potentilla glabra-Fragaria orientalis. The results of DCA ordination showed that temperature, altitude and moisture conditions were the dominant factors affecting species distribution in Larix principis-rupprechtii communities. The results of DCCA ordination suggested that species distribution in Larix principis-rupprechtii communities was positively related to altitude, while negatively correlated with slope.
出处
《山西农业科学》
2016年第5期646-652,共7页
Journal of Shanxi Agricultural Sciences
基金
科技部基础性工作专项(2011FY110300)
