STUDIES ON THE HUMUS FORMS OF FOREST SOILS : VI. Mineralization of Nitrogen in Brown Forest Soils
スポンサーリンク
概要
- 論文の詳細を見る
The non-dried samples from each layer and horizon of the 29 brown forest soils which were analyzed for elementary composition in the previous paper (5), were examined for nitrogen mineralization by the determination of inorganic nitrogen before and after 20 weeks' incubation. The findings obtained about the inorganic nitrogen contents of the samples after 20 weeks' incubation are summarized as follows. 1) The higher the N_T (total nitrogen) level of the sample was, the greater was the amount of N_I (total inorganic nitrogen) contained in it. 2) In general, both the N_I level and the nitrogen mineralization rates (N_I/N_T×100) showed a tendency to increase with movement downward from the L layer to the F-H layer, and thereafter there was decrease with increasing depth. 3) The N_I contained in the L-H-A layers was between 4.7 to 331 mg with one exception (924 mg), and most of it existed as NH_4-N in the majority of the samples except that remarkably large amounts of NO_3-N were found in the F-H-A layers of some wet type soils which had Cryptomeria japonica or broad-leaf tree vegetation. 4) The A-A-B horizons of the wet type soils were distinguished from those of the dry type soils by their higher N_I levels and higher values of the NO_3-N/N_I ratio. 5) The rate of NO_3-N to N_I (NO_3-N/N_I×100) was found to be generally higher in the A-A-B horizons than in the L-H-A layers with some exceptions. Additional Index Words : forest soil, humus form, nitrogen transformation.
- 社団法人日本土壌肥料学会の論文
著者
-
Ohta Seiichi
Faculty Of Agriculture Nagoya University
-
KUMADA Kyoichi
Faculty of Agriculture, Nagoya University
-
Kumada Kyoichi
Faculty Of Agriculture And Water Research Institute Nagoya University
関連論文
- STUDIES ON THE HUMUS FORMS OF FOREST SOILS : VIII. Effect of the Addition of Ammonium Sulfate on Mineralization of Nitrogen in Forest Soils
- EXPERIMENTAL STUDIES ON THE BEHAVIOR OF FINE ORGANIC PARTICLES AND WATER-SOLUBLE ORGANIC MATTER IN MINERAL SOIL HORIZONS
- STUDIES ON THE HUMUS FORMS OF FOREST SOILS : VII. Nitrogen Transformation during Incubation
- CHANGES IN SOIL ORGANIC MATTER AND NITROGEN FERTILITY DURING THE SLASH-AND-BURN AND CROPPING PHASES IN EXPERIMENTAL SHIFTING CULTIVATION
- BEHAVIOR OF PHENOLIC SUBSTANCES IN THE DECAYING PROCESS OF PLANTS : IX. Distribution of Phenolic Acids in Soils of Paddy Fields and Forests
- PREPARATION OF POWDERED SAMPLE OF FULVIC ACID AND ANALYSIS OF ITS ACID FUNCTIONAL GROUPS
- STUDIES ON THE HUMUS FORMS OF FOREST SOILS : IV. Humus Composition of Fractionated Horizons of Forest Soils
- STUDIES ON THE HUMUS FORMS OF FOREST SOILS : III. Elementary Composition of Fractionated Horizons of Forest Soils
- STUDIES ON THE HUMUS FORMS OF FOREST SOILS : VI. Mineralization of Nitrogen in Brown Forest Soils
- STUDIES ON THE HUMUS FORMS OF FOREST SOILS : V. Elementary Composition of Soil Organic Matter of Brown Forest Soils
- STUDIES ON THE HUMUS FORMS OF FOREST SOILS : II. The Humus Composition of Fractionated Horizons of Higashiyama Soil
- CHARACTERISTICS OF BURIED HUMIC HORIZONS AT THE SHIIJI ARCHAEOLOGICAL PITS : III. Carbon, Nitrogen, Aluminium, Silicon, Iron, Phenol and Amino Acid Contents in Humic and Fulvic Acids
- CHARACTERISTICS OF BURIED HUMIC HORIZONS AT THE SHIIJI ARCHAEOLOGICAL PITS : IV. Amorphous Constituents of Humus-Clay Complexes in Buried Humic Horizons
- CHARACTERISTICS OF BURIED HUMIC HORIZONS AT THE SHIIJI ARCHAEOLOGICAL PITS : V. Palynological Studies on Buried Humic Horizons
- A NEW METHOD FOR DETERMINING FERROUS IRON IN PADDY SOILS
- STUDIES ON A VOLCANIC ASH SOIL AT OHNOBARU, TARUMIZU CITY, KAGOSHIMA PREFECTURE : I. Status of Humus Accumulated in the Profile
- IONIZATION- AND REDUCTION-DIFFERENCE SPECTRA OF HUMIC AND FULVIC ACIDS
- CARBONACEOUS MATERIALS AS A POSSIBLE SOURCE OF SOIL HUMUS
- CHARACTERISTICS OF THE GREEN FRACTION OF P TYPE HUMIC ACID
- STUDIES ON THE PROPERTIES OF ORGANIC MATTER IN BURIED HUMIC HORIZON DERIVED FROM VOLCANIC ASH : III. Sugars in Hydrolysates of Buried Humic Horizon
- ELEMENTARY COMPOSITION AND ABSORPTION SPECTRA OF HUMIC AND FULVIC ACIDS
- STUDIES ON THE PROPERTIES OF ORGANIC MATTER IN BURIED HUMIC HORIZON DERIVED FROM VOLCANIC ASH : VI. Fulvic Acids Extracted from Buried Humic Horizons
- AN X-RAY DIFFRACTION STUDY OF HUMIC ACIDS
- A NEW METHOD FOR DETERMINING FREE IRON IN PADDY SOILS
- COMPARISON OF SEVERAL METHODS FOR DETERMINING FREE IRON IN SOILS
- A COMPARISON OF TWO METHODS FOR ROUTINE CHARACTERIZATION OF HUMUS IN PEDOLOGICAL STUDIES
- HYDROXYANTHRAQUINONES IN SOIL
- ON THE FRACTIONATION OF HUMIC ACIDS BY A FRACTIONAL PRECIPITATION TECHNIQUE
- VISCOSIMETRIC CHARACTERISTICS OF HUMIC ACID
- SUSCEPTIBILITY OF HUMIC ACID TOWARDS SODIUM AMALGAM
- MINERALIZATION OF PHYSICALLY FRACTIONATED ROTTEN PLANT RESIDUES UNDER UPLAND CONDITIONS
- ANALYSIS OF THE ROTTING PROCESS OF RICE STRAW-CALCIUM CYANAMIDE MIXTURE BY PHYSICAL FRACTIONATION
- THE REDUCTION MECHANISM OF MANGANESE IN PADDY SOILS : IV.The Relationship between Microbially and Chemically Active Manganese and Their Levels in Paddy Soils
- CHEMICAL STUDIES ON SOIL HUMIC ACIDS : I. Elementary Composition of Humic Acids
- AROMATIC CONSTITUENTS OF HUMIC ACIDS RELEASED BY Na-AMALGAM REDUCTIVE CLEAVAGE, KOH FUSION AND ZINC DUST FUSION
- A NOVEL FRACTIONATION TECHNIQUE OF HUMIC ACID USING A RESINOUS ION EXCHANGER
- NITROGEN TRANSFORMATION DURING THE ROTTING PROCESS OF RICE STRAW COMPOST
- COMBINATION REACTION BETWEEN HUMIC ACID AND CALCIUM IONS
- STUDIES ON THE COMPOSITION OF AROMATIC NUCLEI OF HUMUS PART I. DETECTION OF SOME CONDENSED AROMATIC NUCLEI OF HUMIC ACID
- STUDIES ON THE HUMUS FORMS OF FOREST SOILS : I. Microscopic Observation and Elementary Analysis of Fractionated Horizons of Higashiyama Soil
- STUDIES ON THE PROPERTIES OF ORGANIC MATTER IN BURIED HUMIC HORIZON DERIVED FROM VOLCANIC ASH : II. Distribution of Carbon and Nitrogen in Buried Humic Horizon
- ANALYSIS OF THE ROTTING PROCESS OF SAWDUST BARNYARD MANURE
- HUMUS COMPOSITION OF MOUNTAIN SOILS IN CENTRAL JAPAN WITH SPECIAL REFERENCE TO THE DISTRIBUTION OF P TYPE HUMIC ACID
- SEVERAL PROPERTIES OF HUMIC ACIDS
- STUDIES ON THE PROPERTIES OF ORGANIC MATTER IN BURIED HUMIC HORIZON DERIVED FROM VOLCANIC ASH : V. Humic Acids in Buried Humic Horizons
- ELEMENTARY COMPOSITION OF HUMIC ACIDS
- SEVERAL PROPERTIES OF Rp TYPE HUMIC ACID
- A MODEL FOR A TYPE HUMIC ACID
- THE INFRARED ABSORPTION SPECTRA OF SOIL COMPONENTS
- SEPHADEX GEL FRACTIONATION OF HUMIC ACIDS
- ON THE ARTIFICIAL HUMIC ACIDS PREPARED FROM COAL AND MICROORGANISM PIGMENTS
- THE INFRA-RED SPECTRA OF HUMIC ACIDS
- ABSORPTION SPECTRA OF HUMIC ACIDS
- STUDIES ON THE PROPERTIES OF ORGANIC MATTER IN BURIED HUMIC HORIZON DERIVED FROM VOLCANIC ASH : VII. Ultramembrane Filtration of Humic Acids of Buried Humid Horizons