| http://www.w3.org/ns/prov#value | - Two possible explanations can be made; 1) surface soil (especially fine particles) has been washed away, where soil is mostly composed of gravel and the percentage of fine fraction is low, or 2) because of long-term soil loss by raindrop detachment, remaining soil looks like ghangingh between exposed fine root networks of Japanese cypress, where soil bulk density is significantly lower than othe
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