河南白云山温带落叶阔叶林萌生特征及萌生个体空间分布格局

以河南省白云山自然保护区温带落叶阔叶林5 hm2样地群落为研究对象,分析该样地木本植物的特征,同时利用点分布格局对样地内萌生能力较强的个体进行空间格局分析.结果显示:该样地内共有木本植物91种17369株;发生萌生现象的有62种2082株,萌生物种占总物种数的68.13％,萌生个体占总个体数的11.99％.样地内所有发...

Germination characteristics and spatial distribution patterns of woody plants in a deciduous broad-leaved forest in Baiyunshan,Henan Province,China

We studied the woody plant community in a 5 hm² area of deciduous broad-leaved forest in Baiyunshan Nature Reserve, Henan Province, China, and explored the characteristics and spatial patterns of the sprouting individuals and sprouting species using point distribution. We identified 91 species and 17 369 trees in the study plot, including 62 sprouting species and 2082 sprouting trees. Sprouting species accounted for 68.13% of the total species and sprouting individuals accounted for 11.99% of the total individuals. The diameter at breast height (DBH) distribution of all sprouting woody plants in the plot conformed to an inverted "J" shape, indicating that the sprouting phenomenon mostly occurred in the early stage of woody plant growth and development. The DBH structure of the top 12 sprouting species with importance values showed four types, i.e., inverted "J" type, bimodal type, normal type, and fluctuating type, indicating that different species exhibited different sprouting abilities at different life cycle stages. Point distribution pattern analysis of sprouting individuals in the top 12 sprouting species with importance values showed that the distribution was aggregated at the small scale but was random or uniform at the large scale. Thus, sprouting regeneration appears to be common in temperate deciduous broad-leaved forests and shows different aggregation distribution patterns due to the different adaptation ranges of each species to the environment.