構築解析システム(CACOAS)に用いる数種落葉果樹のパラメータ

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Several parameters for Canopy Analyzing and Constructing System of Fruit Trees (CACOAS) were collected from apple 'Fuji', cherry 'Satou Nishiki', persimmon 'Hiratanenashi' and pear 'La France', and its precision was exarnined. From data measured by a sterophotogrammetry, We obtained significant formulas of multiple regression (MR) to estimate seven shoot characters in every cultivars. Most of the contribution ratios increased by adding interaction terms (products of 2 characters) to the previous group of explanatory variables. As a technique to bring distribution of shoot characters to be close to actual one, the previous CACOAS has used a method (MR+MCSa), which combined MR. with a Monte Carlo simulation (MCS) using a normal distribution curve with residual standard error from MR as the standard deviation (SD). In the present study, we newly examined another method (MR+MCSb). At each time to Calculate a character, MR+MCSb used a different normal distribution curve with an individual SD of the residual, where the SD fluctuated with a level of estimated value of a character from MR. The MR+MCSb improved distributions of many shoot characters. In addition, we examined two kinds of MCSs using rneasured data distributions (MCSc and MCSd) and found that these methods were effective for shoot characters distributions having of accidental errors in which coefficient of variation in the MR were low. Another parameters for CACOAS to estimate yearly thickening of branches were collected in the 4 cultivas. The contribution ratios in the most MRs incregsed by adding interaction terms (Product of 2 characters) to the previous group of variables. We added to CACOAS a new function which could estimate fruit position in a crown, and collected parameters necessary for these. Significarlt formulas to estimate number of reproductive organs were obtained from MR using branch characters in the 4 cultivars. Distributions of fruit bearing calculated from MR were compared with the actual ones. As these parameters were made to have an identical style regardless of fruit tree species, we could make a general program for CACOAS of all-purpose type, in which users could chdnge a parameter file only.　キーワード：枝の特性値，果樹着生部位，モンテカルロシミュレーション，立体写真測量，枝の年肥大量　Key words : branch character, fruit bearing position, Monte Carlo simulation, stereophotogrammetry, yearly thickening of branch
山形大学の論文
2007-02-15

構築解析システム(CACOAS)に用いる数種落葉果樹のパラメータ

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