Abstract
The Kujyukuri coastal black pine forests near Shirako, Chiba Prefecture are considered to be at-risk damage from excessive soil moisture by groundwater. This research is a proposal for an approach to interpreting the soil groundwater as it relates to the state of growth of coastal forets. The research used spectrometer and ground penetrating radar to measure the characteristic of electromagnetic waves reflecting conditions of vegetation and soil groundwater. The spectral reflectance properties indicating the growing conditions of vegetation and groundwater environment of the soil were quantified as vegetation indices and profile measurement records. The correlation between the growing conditions of coastal forest land soil groundwater was then analyzed statically using both quantities. The results confirmed that there is a correlation between the growing conditions of coastal forte located on excessively moist soil and moisture of the soil. The research also validated the effectiveness of interpreting soil moisture using spectral reflectance properties of ground subsurface explored with ground penetrating radar.
