植物群落の均質度

抄録

1) Important types of plant dispersion is Überdispersion, Unterdispersion, and nomale Dispersion, and they correspend in general heterogeneity, regularity or uniformity and homogeneity of vegetation respectively. But the concept of hemogeneity is decided by objects of investigation.
2) Plant homogeneity concists of I: individual homogeneity (h) and II: communal homogeneity (H): 1 floristic homogeneity, 2 vegetational homogeneity.
3) The relation between communal homogeneity and individual homogeneity of the constituents of a plant community is indicated by H=(h_a+h_b+......+h_k)/k
4) We can calculate the value of h by means of degree of cover as well. But h by density is standard.
5) Homogeneity of distribution of plant position on the ground is less than the one being calculated by the length of internodes of horizontal underground shoots.
6) The fitness of the law of geometical progression of the population density (Motomura) to a plant community is a reflex of a communal homogeneity. But the law was denied at several vegetation which we had investigated.