인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
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
- 발행연도
- 2014.6
- 수록면
- 31 - 31 (1page)
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초록· 키워드
In a remarkable article published in 1976, T.W. Walker and J.K. Syers proposed a conceptual model of phosphorus transformations during pedogenesis that has transformed our understanding of nutrient availability and limitation in terrestrial environments. Distilling data from four New Zealand soil chronosequences, they observed that nitrogen is absent from most parent materials, so nitrogen concentrations are low in young soils but increase rapidly during the early stages of ecosystem development through biological nitrogen fixation. In contrast, phosphorus is derived almost exclusively from the parent material, so phosphorus concentrations are greatest in young soils but decline continuously during pedogenesis as phosphorus is lost in runoff at a greater rate than it is replenished by bedrock weathering. At the same time, chemical transformations further reduce the biologically available phosphorus pool by sequestering it in organic and refractory inorganic forms. As a consequence of these changes, the nutrient limiting primary production varies during ec ... 전체 초록 보기
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