지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2012.6
- 수록면
- 353 - 359 (7page)
이용수
초록· 키워드
오류제보하기
The identification of effective root zone would clarify dynamics of plant available water and soil water balance. Using the relationship between soil properties and electrical resistivity (ER) the purpose of this research is to identify soil zone affected by a plant root activity using electrical resistivity tomography (ERT) technique. Four plastic containers were prepared for two different soil textures (clay and sandy loam) and one container for each texture was selected for planting four corn seedlings (Zea mays L.) and the others were prepared for the blank. For ERT monitoring, we prepared 0.8 m plastic sticks with 17 electrodes installed with 5 cm space. The Ministing (AGI Inc., Texas) instrument for electrical resistivity measurement and semi-auto converter of electrode arrangement were set up for dipole-dipole array. During 2 months of the corns growing, ERT monitoring was made 3 to 4 days after the irrigation practice. Despite of the same amount water supplied into soils, two textures showed very different apparent resistivity values due to different clay content. The apparent electrical resistivity is consistently lower in clay loam comparing to sandy loam soil implying that plant root does not significantly alter the overall trend of resistivity. When plant root system, however, is active both soils with plants showed 2-7 times higher electrical resistivity and higher coefficient variation than soils without plant, implying the effect of root system on the resistivity, in which may caused by . This result suggests plant root activities regulating the soil water dynamics mainly control the variation of electrical resistivity over soil textural difference. Therefore the identification of water uptake zone would highly be correlated to plant root activities, thus ERT will be feasible approach to identify spatial characteristics of a plant root activity.
목차
Introduction
Materials and Methods
Results and Discussion
Conclusion
Reference
참고문헌 (14)
참고문헌 신청
1. [학술지(정기간행물)] - Basso, B. / 2009 / Subsurface imaging of tillage systems effects on soil physical properties using electrical resistivity tomography / Geophys. Res
2. [학술지(정기간행물)] - Bernard-Ubertosi, M. / 2009 / Characterization of structural profiles in clay-rich marsh soils by cone resistance and resistivity measurements / Soil Sci. Soc. Am. J 73 : 46 ~ 54
3. [학술지(정기간행물)] - Brunet, P. / 2010 / Monitoring soil water content and deficit using electrical resistivity tomography (ERT) — a case study in the Cevennes area, France / J. Hydrol 380 : 146 ~ 153
4. [학술지(정기간행물)] - Federer, C.A. / 2003 / Sensitivity of annual evaporation to soil and root properties in two models of contrasting complexity / J. Hydrometeor 4 (6) : 1276 ~ 1290
5. [학술지(정기간행물)] - Fukue, M. / 1999 / The microstructures of clay given by resistivity measurements / Eng. Geology 564 : 43 ~ 54
2. [학술지(정기간행물)] - Bernard-Ubertosi, M. / 2009 / Characterization of structural profiles in clay-rich marsh soils by cone resistance and resistivity measurements / Soil Sci. Soc. Am. J 73 : 46 ~ 54
3. [학술지(정기간행물)] - Brunet, P. / 2010 / Monitoring soil water content and deficit using electrical resistivity tomography (ERT) — a case study in the Cevennes area, France / J. Hydrol 380 : 146 ~ 153
4. [학술지(정기간행물)] - Federer, C.A. / 2003 / Sensitivity of annual evaporation to soil and root properties in two models of contrasting complexity / J. Hydrometeor 4 (6) : 1276 ~ 1290
5. [학술지(정기간행물)] - Fukue, M. / 1999 / The microstructures of clay given by resistivity measurements / Eng. Geology 564 : 43 ~ 54
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UCI(KEPA) : I410-ECN-0101-2014-521-000829286