The investigation of vegetation by means of sampling method-Studies on the structute of plant communities V
Year: 1950
Type: article
Abstract: 1) I investigated the quantitative method analysing vegetation according to the theory of small samples.2) It is recognized by most investigators that we ought to use the random sampling in our field survey, but we often based its method on subjective randomizaton.3) Sampling error is controlled by vegetational homogeneity and sampling ratio. And I could not compare several sampling methods by means of sampling error.4) The best stratification is the worst clusterization. Those order is expressed by coefficient of interclass correlation (ρ') and also the quality of sampling method is decided by the coefficient.5) The stratification by means of a dominant does not coincide with the one by means of the whole physiognomy.The latter is better.6) The significance of difference between several sampling methods is indicated by analysis of variance.Relative number of sampling units required for a given accuracy according to samling methods is calculated from average comparable variance.
Source: Shokubutsugaku Zasshi
Author: Makoto NUMATA
Institution: Chiba University
Language: English
Subfield: Nature and Landscape Conservation
Field: Environmental Science
Domain: Physical Sciences
SDG: Life on land
Open Access status: bronze
OpenAlex ID: W2326201035