15N-NH4+ Isotope Dilution Method for Analyzing Nitrogen Transformation in Upland Soils

JARQ : Japan Agricultural Research Quarterly
ISSN 00213551
書誌レコードID(総合目録DB) AA0068709X
本文フルテキスト

Utilization of 15N in the studies on N transformation in upland soils was reviewed with emphasis placed on a 15N-NH4+ isotope dilution method. Although this method is not extensively used at present, it is informative and useful for quantitative investigations on N dynamics in soils, because it is the only means which can determine the gross rates of mineralization and immobilization at the same time. It is of primary importance to examine which kinetics can adequately explain each process of N transformation. Although both the zero-order and the first-order kinetics are applicable, their applicability depends on various factors: e.g. concentration of substrate and time span of incubation. Remineralization of tagged-15N is another critical problem. However, the errors caused by remineralization can be practically avoided by shortening the incubation period.

刊行年月日
作成者 Takashi NISHIO
オンライン掲載日
国立情報学研究所メタデータ主題語彙集(資源タイプ) Journal Article
25
2
開始ページ 88
終了ページ 92
言語 eng

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