In recent years,Japan has experienced a significant increase in crop damage caused by wild birds and animals,particularly in mountainous and hilly areas. Damage by wild boars has been observed and expanded even in areas with snowfall in winter. The study area is Hakui City,Ishikawa Prefecture,where damage to crops by wild boars has been observed since 2013. This study examine the activities taken by local governments and residents against wild boars and the use of captured wild boars for meat,and to clarify the issues involved in continuing to capture wild boars as a pest species. By examining efforts in the Hokuriku region,where new damage has been observed,we will present basic data for planning countermeasures against new damage in the future and research issues in geography surrounding wild boar control.

　This study investigates the characteristics of the Pleistocene-Holocene deposits in the Obama Lowland, central Japan, based on the analyses of existing borehole logs and deposits. The main results are summarized as follows: 1） The incised-valley-fill deposits since around the Last Glacial Maximum （LGM） are conveniently divided into three layers: basal gravel （BG）, middle sand and mud （MSM）, and upper sand and gravel （USG） in ascending order. 2） The alternation of gravel and overlying mud layers is observed several times in the incised-valley-fill deposits and their lower part, suggesting subsidence of the lowland over 10⁴-10⁵ years. 3） The area near the present river mouth was drowned by the Holocene sea-level rise, though the distribution of the shallow sea was very limited. 4） The Kita River and its tributaries with large riverbed gradients supplied coarse-grained sediments and buried the shallow sea.