ANALYSIS OF THE VERTICAL STRUCTURE IN FORESTS GY THE h-M DIAGRAM
DOI:
https://doi.org/10.5902/19805098310Keywords:
Structure, stratification, fir- hemlock, Japan, populations.Abstract
A quantitative method of analyzing the vertical structure of forestes is proposed. The method was named h-M diagram and serves to distinguish stories in the forest as a whole or for specific populations inside it. Data collected in a fir- hermlock forest in Japan were to ilustrate the usage of the diagram. The forest was composed of three stories: story I for emergent higher than 30m, II for trees of 5- 30m, and III for trees shorter than 5m. Four types of stratification were recognized for specific populations: a- dominant species with wide size distribution; b- pioneers with a single story; c- non- pioneer species (intermediate wit two stories; d- understory species with three stories. The stratification of the populations was related to their ecological behavior. It was concluded that h-M diagram is a gelpful tool for inferstanding the structure of forests.
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