桜島南岳からの降灰による作物生育被害に関する研究 : (2)桜島からの現地情報に基づく考察

概要

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It was found from time trend of crop yields at Sakurajima-Town and geographical distribution of increased percentage of crop yield in Kagoshima Prefecture that the crop production in and around Sakurajima has been severely affected by the ash fall. Between the stomatal conductance and the distance from a volcanic crater, a clear relationship could not be found. But, when the volcanic ash accumulated on leaf surface, a considerable rise in leaf temperature was observed, and then numerous fruit drops happened in mandarine orange. Some advantages of the simplified soil admixing, in which normal soil is arranged concentrically around the main root of a crop, were reconfirmed in on-the-spot examination. From these statistic and crop scientific informations from Sakurajima Island, the occurrence mechanisms of crop growth damage due to ash fall and some cultural countermeasures were discussed.
日本自然災害学会の論文
1999-05-31