植生ライダーによる過酷環境下栽培ホウレン草の観察

概要

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The vegetation LIDAR is one of the methods for measuring the activity degree of some kind of plant. The technique is founded on the LIF, Laser-induced Fluorescence method and LIDAR, light detection and ranging. It is recognized that the ratio of the peak of fluorescence at 740 to that at 685nm shows a linear correlation to the chlorophyll concentration. Applying such principles, we investigated the influence of the acid to a vegetable. The acidity of the simulated acid rain water were pH5.5, pH5.0, pH4.5, pH4.0, pH3.5, pH3.0, and pH2.5. Each pot of spinach was squirted with these eight kinds of sulfuric acid solution as the simulated acid rain. The spinaches thrived under a severe condition befor the measurement. The integrated ratios reveal that simulated acid rain with a 2.5 pH value began to make spinaches marcescence after eight days.
2012-10-31