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
- 2014.8
- 수록면
- 284 - 289 (6page)
이용수
초록· 키워드
오류제보하기
Farmers in highlands in South Korea pile up 20 to 30 cm of saprolites, mostly granite- or granitegneiss-weathered materials, on surface of arable lands every three to five years to compensate eroded soil and sometimes to discontinue soil-borne diseases. Immediate increases of infiltration and percolation rates are expected with coarse textured saprolites while soil drainage becomes poorer in a long-term. In this study, we analyzed mineralogical characteristics and micro-morphology of plow pan to investigate processes making impermeable layers. Soil samples were collected from plow pan, usually located at approximately 20 cm soil depth and at the lower part of piled saprolites, in arable lands in Hoenggye 5-ri, Daekwanryeong-myeon, Gangwon-do (N37.7, E128.7) in which saprolites were added 2, 4, and 8 years ago; saprolites were transported from similar areas. The saturated hydraulic conductivity decreased over time. Based on soil thin section pedography, quartz and feldspar accounted for a majority of minerals. The size of feldspar decreased and macropores became filled with clay or silt particles over time, which implies that macropores were packed with particles weathered from feldspar. The X-ray diffraction (XRD) analysis indicated that intensity of feldspar decreased over time and the reverse was true for kaolinite and illite, indicating that feldspar and mica weathering induced formation of kaolinite and illite. Conclusively, deteriorated drainage by formation of impermeable layers in farms with piled saprolites was caused by accumulation of clay minerals such as kaolinite and illite in macropores; illite and kaolinite can be formed by weathering of mica and eldspar, respectively.
목차
Introduction
Materials and Methods
Results and Discussion
Conclusions
References
참고문헌 (15)
참고문헌 신청
1. [학술지(정기간행물)] - Chesworth. W / 1973 / The parent material effect and the genesis of soils / Geoderma 10 : 215 ~ 225
2. [학술지(정기간행물)] - Fedo, C. M. / 1995 / Unraveling the effects of potassium metasomatism in sedimentary rocks and paleosols, with implications for paleoweathering conditions and provenance / Geology 23 : 921 ~ 924
3. [학술지(정기간행물)] - Jeong, G.Y. / 1993 / Boxwork fabric of halloysiterich kaolin forned by weathering of anorthosite in Sancheong area, Korea / Clays and Clay Minerals 41 : 56 ~ 65
4. [학술지(정기간행물)] - Ji, G. H. / 1981 / Study on subsurface drainage system for the multipurpose paddy field / J. Korean Soc. Agri. Engi 23 (4) : 15 ~ 20
5. [학술지(정기간행물)] - Kim, P. J. / 1997 / Vertical distribution of bulk density and salts in a plastic film house soil / Korean J. Soil Sci. Fert 30 : 226 ~ 233
2. [학술지(정기간행물)] - Fedo, C. M. / 1995 / Unraveling the effects of potassium metasomatism in sedimentary rocks and paleosols, with implications for paleoweathering conditions and provenance / Geology 23 : 921 ~ 924
3. [학술지(정기간행물)] - Jeong, G.Y. / 1993 / Boxwork fabric of halloysiterich kaolin forned by weathering of anorthosite in Sancheong area, Korea / Clays and Clay Minerals 41 : 56 ~ 65
4. [학술지(정기간행물)] - Ji, G. H. / 1981 / Study on subsurface drainage system for the multipurpose paddy field / J. Korean Soc. Agri. Engi 23 (4) : 15 ~ 20
5. [학술지(정기간행물)] - Kim, P. J. / 1997 / Vertical distribution of bulk density and salts in a plastic film house soil / Korean J. Soil Sci. Fert 30 : 226 ~ 233
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UCI(KEPA) : I410-ECN-0101-2015-520-002568050