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
- 학술대회자료
- 저자정보
- 저널정보
- 한국토양비료학회 한국토양비료학회 학술발표회 초록집 The 9th International Conference of The East and Southeast Asis Federation of Soil Science Societies
- 발행연도
- 2009.10
- 수록면
- 144 - 148 (5page)
이용수
초록· 키워드
오류제보하기
Oxisols cover approximately 23% of the land surface in the tropics and are utilized extensively for agricultural purposes in the tropical countries. Under the variable input types of agricultural systems practiced locally, mapping of some of these soils still appears to be problematic. This hinders attempts to implement sustainable agro-management protocols. Since the introduction of Soil Taxonomy in 1975, several changes hve been made to the definition of Oxisols. The kandi concept, for instance, was introduced to improve the classification of transitional soils. However, the definition for Oxisols in Soil Taxonomy (1999) indicates that additional input is still required to refine the definition in order to resolve some of the outstanding classification problems. Therefore, the objective of this study is to examine the properties of some Oxisols and closely related soils in order to utilize this to enhance mapping strategies. Soils from Malaysia were used in this study. Field observations on these soils provided the first indication that some of the presently classified kandi-Alfisols and kandi-Ultisols were closer to Oxisols in terms of their properties. Water retention differences and apparent CEC of the subsurface horizons also supproted this idea. The types of extractable Fe-oxides and external specific surface areas of the clay fractions showed that many kandic horizons have surface properties that are similar to the oxic horizons. Micromorphology indicated that the gentic transition from the argillic to the oxic involves a diminishing expression of the argillic. The kandic horizon is therefore inferred as a transition to the oxic horizon.
It is proposed that the Oxisols be keyed out based only on the presece of an oxic horizon. The impact of this proposal on the definition of Oxisols is that, soils with kandic horizons that meet the properties of the proposed oxic subsurface horizon, will be grouped under this soil order. There will still be some kandi-Ultisols or kandi-Alfisols; however, these are soils that have much higher apparent CEC. Tesing of the proposed classification on some Malaysian soils showed that the new definition for Oxisols provides a better basis for the classification and mapping of the local soils and the development of meaningful soil management groups for plantations.
It is proposed that the Oxisols be keyed out based only on the presece of an oxic horizon. The impact of this proposal on the definition of Oxisols is that, soils with kandic horizons that meet the properties of the proposed oxic subsurface horizon, will be grouped under this soil order. There will still be some kandi-Ultisols or kandi-Alfisols; however, these are soils that have much higher apparent CEC. Tesing of the proposed classification on some Malaysian soils showed that the new definition for Oxisols provides a better basis for the classification and mapping of the local soils and the development of meaningful soil management groups for plantations.
목차
Abstract
INTRODUCTION
MATERIALS AND METHODS
GENERAL PROPERTIES
MINERALO-CHEMISTRY
MICROMORPHOLOGY
PROPOSED CHANGES TO CLASSIFICATION AND MAPPING CRITERIA
IMPLICATIONS ON THE MAPPING AND DISTRIBUTION OF MALAYSIAN SOILS
CONCLUSION
REFERENCES
참고문헌 (0)
참고문헌 신청함께 읽어보면 좋을 논문
논문 유사도에 따라 DBpia 가 추천하는 논문입니다. 함께 보면 좋을 연관 논문을 확인해보세요!
-
Nitrogen Fluxes in the Soil Profile of Tropical Seasonal Forests in Cameroon
한국토양비료학회 학술발표회 초록집
2014 .06
-
Improving Identification and Description of Horizon Boundaries to Enhance Soil Data Quality
한국토양비료학회 학술발표회 초록집
2014 .06
-
Toward a Global System of Soil Horizon Nomenclature
한국토양비료학회 학술발표회 초록집
2014 .06
-
Zinc, Copper, Boron and Iron Requirement of Upland Rice Grown on a Brazilian Oxisol
한국토양비료학회 학술발표회 초록집
2014 .06
-
Seeing Soil
한국토양비료학회 학술발표회 초록집
2014 .06
-
Spatial Soil Database for Sustainable Soil Management in Korea
한국토양비료학회 학술발표회 초록집
2018 .10
-
KOREAN SOILS AND INFORMATION
한국토양비료학회 세미나
2012 .06
-
Australian Soil Classification
한국토양비료학회지
2016 .02
-
The Development of Soil Survey and Soil Mapping in China
한국토양비료학회 학술발표회 초록집
2009 .10
-
Reclassification of Korean Soils According to Revised Soil Taxonomy
한국토양비료학회지
2019 .05
-
Korean Soils and Information System
한국토양비료학회 학술발표회 초록집
2009 .10
-
Soils in the Soyang Lake Watershed: Soil Sampling Design and Early Soil Description
한국토양비료학회 학술발표회 초록집
2014 .06
-
Impact of Crop Residues Decomposition on Soil Organic Matter in an Oxisol Under No-Till
한국토양비료학회 학술발표회 초록집
2014 .06
-
Integrating Soil Information System with Agro-environmental Application in Taiwan
한국토양비료학회 학술발표회 초록집
2009 .10
-
Indian System of Soil Classification Scheme: A Proposed Framework
한국토양비료학회 학술발표회 초록집
2014 .06
-
Soil Organic Carbon Maps of Brazil Using Digital Soil Modeling
한국토양비료학회 학술발표회 초록집
2014 .06
-
The Information of Major Soils in Vietnam
한국토양비료학회 학술발표회 초록집
2009 .10
-
Changes in Soil Properties in the Agricultural Fields of Korea
한국토양비료학회 학술발표회 초록집
2014 .06
-
Initial Stage Processes of Soil Development Processes observed by a Field Experiment
한국토양비료학회 학술발표회 초록집
2014 .06
-
Soil Information System and Its Application in Taiwan
한국토양비료학회 학술발표회 초록집
2009 .10
이 논문의 저자 정보
최근 본 자료
댓글(0)
0
UCI(KEPA) : I410-ECN-0101-2014-521-000652692