研究者詳細 - 森　也寸志

論文 - 森　也寸志

分割表示 103 件中 81 - 100 件目／全件表示 >>

Measurement of fertilizer leaching from root zone using an automated infiltration soil water sampler in an unsaturated sandy field

N. Higashi, Y. Mori and M. Inoue

Soil Sci. and Plant Nutr. 51 ( 7 ) 1023 - 1033 2005年

油汚染土壌の浄化における栄養塩注入速度の最適化

森也寸志, 宮林哲司, 北村光太郎

地下水・土壌汚染とその防止対策に関する研究集会講演集 336-339 336 - 339 2005年

Salt Leaching and Plant Rooting Effects of Sea Water Application in Coastal Area, Oman.

日本砂丘学会誌 52(2) 43-50 2005年

自動サクション制御による不飽和砂質土壌中の下方浸透水採取装置の開発.

東直子, 森也寸志, 井上光弘

土壌の物理性 101 27-35 ( 101 ) 27 - 35 2005年

Multi-Functional Heat Pulse Probe for the Simultaneous Measurement of Soil Water Content, Solute Concentration, and Heat Transport Parameters

Y. Mori, J. W. Hopmans, A. P. Mortensen, G. J. Kluitenberg

VADOSE ZONE JOURNAL 2 ( 4 ) 561 - 571 2003年11月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：SOIL SCI SOC AMER

Water, solute, and heat transport processes in soils are mutually interdependent as each includes convective water flow and each transport mechanism is partly controlled by fluid saturation, pore geometry, temperature, and other soil environmental conditions. Therefore, their measurement in approximately identical measurement locations and volume is essential for understanding transport phenomena in soils. We introduce a 2.7-cm-diameter multi-functional heat pulse probe (MFHPP), which consists of a single central heater, four thermistors, and four electrodes (Wenner array) that together are incorporated in six 1.27-mm-o.d. stainless-steel tubes. The bulk soil thermal properties and volumetric water content of Tottori Dune sand were determined from the measurement of the temperature response of all four thermistor sensors after application of an 8-s heat pulse by the heater sensor. Simultaneously with the temperature measurements, the bulk soil electrical conductivity (EC(b)) was measured using the Wenner array, from which soil solution concentration (EC(w)) can be obtained after calibration. All measurements were taken during multistep outflow experiments, which also allowed estimation of the soil's hydraulic properties. We demonstrated that the MFHPP can effectively measure volumetric water content, thermal properties, and EC(b), and can be used to indirectly estimate soil water fluxes at rates larger than 0.7 m d(-1) in the sand.

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Assessment and Field-Scale Mapping of Soil Quality Properties of a Saline-Sodic Soil

Geoderma 114 ( 3-4 ) 231 - 259 2003年6月

Multi-Functional Heat Pulse Probe for the Simultaneous Measurement of Soil Water Content, Solute Concentration, and Heat Transport Parameter

Vadose Zone Journal 2 ( 4 ) 561 - 571 2003年

茶園小流域からの窒素，リン，CODの排出負荷量の推定

TAKEDA I.

水環境学会誌 25(9):565-570 ( 9 ) 565 - 570 2002年

軟X線による土壌間隙構造および水移動機構の可視化と解析に関する研究

森也寸志

農業土木学会誌 = Journal of the Agricultural Engineering Society, Japan 69 ( 1 ) 85 - 87 2001年1月

鳥取県西部地震による農地および農業施設の被害

森也寸志, 石井将幸, 木原康孝, 福櫻盛一

農業土木学会誌 69 ( 1 ) 71 - 75 2001年

マルチステップ流出法による不撹乱土壌の不飽和透水係数の推定

農業土木学会論文集 213:61-68 2001年

軟X線による非破壊土壌中の排水機構の解明

森也寸志

土壌の物理性 83 ( 83 ) 59 - 65 2000年

Discriminating the influence of soil texture and management-induced changes in macropore flow using soft X-rays

Y Mori, K Iwama, T Maruyama, T Mitsuno

SOIL SCIENCE 164 ( 7 ) 467 - 482 1999年7月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：LIPPINCOTT WILLIAMS & WILKINS

Soft X-ray radiography, a nondestructive technique, was employed to examine macropore now characteristics in soils of different management: paddy, upland field, and forest. A constant-head saturated hydraulic conductivity experiment was conducted using the soft X-ray apparatus. A contrast medium, CH2I2, was applied as a tracer to obtain contrast images of macropore now. The visualization efficiency has been increased by the low-energy system that enables high-contrast images to be obtained as a result of a wider range of mass attenuation coefficients. CH2I2 has a larger attenuation coefficient than bulk soil and has a kinematic viscosity similar to water, It was introduced dropwise to allow movement with the water now. Macropore now was captured using a soft X-ray TV camera, whereas now paths were photographed on X-ray films. Light duralumin, was used for the sample holder instead of the conventionally used stainless steel in order not to cancel the efficiency induced by the contrast medium. We found that the highest resolution obtained was 42.3 mu m This corresponded well to the calculated value of 30 mu m at an energy level of 60 to 70 keV, The resultant images showed that only about 30% of potentially available macropores conducted water now. Macropore now paths were affected by land management: straight isolated cylindrical paths in paddy field soils; a network of tortuous paths in upland field soils; and round cloudy interaggregate paths in forest soils. Macropore now velocity was estimated from CH2I2 movement. Because the now area was restricted to a small number of macropores, the Reynolds number of now ranged from 51.6 to 88.6. The now was in a transition region from laminar to turbulent now. Under actual conditions of macropore now, the assumption of laminar now was not realized, Both structural and dynamic analyses of macropore now explained the now characteristics successfully.

DOI： 10.1097/00010694-199907000-00003

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Soft x-ray radiography of drainage patterns of structured soils

Y Mori, T Maruyama, T Mitsuno

SOIL SCIENCE SOCIETY OF AMERICA JOURNAL 63 ( 4 ) 733 - 740 1999年7月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：SOIL SCI SOC AMER

Characterization of unsaturated hydraulic and geometrical properties of undisturbed soils is essential for understanding water flow and solute transport in soils. We visualized the drainage pattern by soft x-ray radiography using a contrast medium. Outflow experiments were conducted simultaneously and unsaturated hydraulic conductivity was calculated by parameter estimation. Time sequential drainage patterns were obtained by the subtraction technique, which was done by subtracting a reference image from the image of interest. Drainage patterns of paddy and upland field soils showed that drainage occurs through macropores first, followed by interaggregate macropores, and then finally through the soil matrix. The drainage pattern resembles two-domain flow of macropore and matrix, On the other hand, drainage occurred through the entire sample in forest soils, Unsaturated hydraulic conductivity data showed a discontinuity near saturation, providing evidence of two-domain now. This was explained by differences in bulk density. Tightly packed soils allowed macropore now. The differences increased in the order: forest, upland field, and paddy field soils. An exception was observed in paddy field soils, where roughly parked deeper soils showed significant macropore now. The thin section photograph of paddy field soils from deeper layers revealed that the macropore wall was coated with alluvial materials that prevented smooth water flow across the macropore wall. In this regard, we should also consider the resistance caused by these materials. Soft x-ray radiography of the drainage pattern was helpful in characterizing the unsaturated hydraulic properties of structured soils.

DOI： 10.2136/sssaj1999.634733x

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Soft X-ray visualization and analysis on hydraulic and geometrical properties of soil macropore

Ph. D. Thesis, Kyoto UniVersity 1999年

軟X線による非破壊土壌中の水移動機構の解明

ESI-NEWS 17 ( 4 ) 129 - 139 1999年

被覆肥料を用いた畑地からの窒素負荷の流出削減-傾斜ライシメータからの汚濁負荷流出に関する研究((]G0001[))-(共著)

農業土木学会論文集 198 13 - 21 1998年