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Showing items 1 through 9 of 9.
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Phosphorus (P) and nitrogen (N) concentrations were measured at 75 points in the upper reaches of rivers draining into the agricultural watersheds south of the Ibaraki prefecture during the summer and winter of year 2009. A geographic information system (GIS) was used to combine the environmental information regarding the watersheds such as land use, topography, and soil with water quality data for a statistical analysis. As andosols have a stronger tendency to adsorb P than other soil types, watersheds were classified into areas with andosol and non-andosol soils.
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The Japanese public now has access to vast amounts of geographical information produced by many government agencies and media outlets on the tsunami caused by the Great East Japan Earthquake. Many maps and images not only inform the public about the tsunami damage area, but potentially help the public and policy makers understand the landscape damaged by the tsunami, and plan reconstruction. However, large amounts of publically available data still remain underutilized.
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A questionnaire survey was conducted using 1,069 farmers about wild boar damage on agricultural land in the former Maebaru City in Fukuoka Prefecture. Abandoned cultivated land in the city was 11,202 ha. The questionnaire contained information about farming, damages attributable to wild boar, and the countermeasures against wild boar. The collection rate of valid questionnaires was 79.6%. The crop damaged the most was rice (53%), followed by vegetables (16%), oranges (13%), potatoes (5%), and others (13%).
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