Japan Geoscience Union Meeting 2016

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International Session (Poster)

Symbol A (Atmospheric and Hydrospheric Sciences) » A-GE Geological & Soil Environment

[A-GE05] Subsurface Mass Transport and Environmental Assessment

Mon. May 23, 2016 5:15 PM - 6:30 PM Poster Hall (International Exhibition Hall HALL6)

Convener:*Shoichiro Hamamoto(Department of Biological and Environmental Engineering, The University of Tokyo), Yasushi Mori(Graduate School of Environmental and Life Science, Okayama University), Hirotaka Saito(Department of Ecoregion Science, Tokyo University of Agriculture and Technology), Ken Kawamoto(Graduate School of Science and Engineering, Saitama University), Ming Zhang(Institute for Geo-Resources and Environment, National Institute of Advanced Industrial Science and Technology)

5:15 PM - 6:30 PM

[AGE05-P16] The relation of Soil water repellency appearance characteristics and soil physical-chemical properties in the domestic agricultural land and New Zealand pasture land

*Hisanobu Kuroki1 (1.Graduate School of Science and Engineering and the International Institute for Resilient Society, Saitama University)

Keywords:Soil water repellency, Elemental analysis

Soil water repellency (SWR) is the natural phenomenon which has been commonly related to organic compounds and aggregation in soils. Soil Water Repellency in the field will cause non-uninform infiltration and surface run-off, soil erosion. Especially, agricultural land under organic management may be particularly vulnerable to SWR as a result of frequent organic fertilizer applications. The objectives of this study are i) to investigate the spatial distribution of SWR at the surface, ii) to investigate the difference of SWR at the surface of a soil in the field and laboratory, and iii) to identify the relationship between the SWR and soil physical chemical parameters. Two sites were selected; greenhouse vegetable farm at Mizuho-farm, Miki-city, Hyogo prefecture in Japan and pasture land at Tihoi-farm, Waikato in New Zealand. Field measurement and soil sampling were carried out at Mizuho-farm in December 2013 and October 2014, at Tihoi-farm in February 2014 (summer) and December 2014 (spring). At the result, SOC and C/N are not related to field SWR appearance compare to field water content. And comparison of laboratory SWR and field SWR shows that higher clay content will make higher field SWR by surface roughness.