Spatial Variability of Nitrous Oxide Emissions and Their Soil‐Related Determining Factors in an Agricultural Field

Yanai, Junta; Sawamoto, Takuji; Oe, Taku; Kusa, Kanako; Yamakawa, Keisuke; Sakamoto, Kazunori; Naganawa, Takahiko; Inubushi, Kazuyuki; Hatano, Ryusuke; Kosaki, Takashi

doi:10.2134/jeq2003.1965

Cited by 126 publications

(101 citation statements)

References 34 publications

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“…Increased soil porosity has been associated with higher CO 2 efflux (de Figueiredo Brito et al 2009), suggesting improved gas flux transfer to the atmosphere with lower soil bulk density. Among chemical properties, electrical conductivity has been negatively associated with CO 2 efflux (Allaire et al 2012), whereas soil pH and soil organic matter were found to be primary factors for explaining variation in N 2 O flux for an alluvial soil in northern Japan (Yanai et al 2003). Though far from a mechanistic understanding of soil-gas flux relationships, these findings provide insight for efforts to use site-specific soil management as a means to mitigate greenhouse gas fluxes from agroecosystems.…”

Section: Discussionmentioning

confidence: 98%

Grazing Management, Season, and Drought Contributions to Near-Surface Soil Property Dynamics in Semiarid Rangeland

Liebig

Kronberg

Hendrickson

et al. 2014

Rangeland Ecology & Management

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Grazing management effects on soil property dynamics are poorly understood. A study was conducted to assess effects of grazing management and season on soil property dynamics and greenhouse gas flux within semiarid rangeland. Grazing management treatments evaluated in the study included two permanent pastures differing in stocking rate (moderately and heavily grazed pastures) and a fertilized, heavily grazed crested wheatgrass (Agropyron desertorum [Fisch. ex. Link] Schult.) pasture near Mandan, North Dakota. Over a period of 3 yr, soil properties were measured in the spring, summer, and fall at 0-5 cm and 5-10 cm. Concurrent to soil-based measurements, fluxes of carbon dioxide, methane, and nitrous oxide were measured on 1-wk to 2-wk intervals and related to soil properties via stepwise regression. High stocking rate and fertilizer nitrogen (N) application within the crested wheatgrass pasture contributed to increased soil bulk density and extractable N, and decreased soil pH and microbial biomass compared to permanent pastures. Soil nitrate nitrogen tended to be greatest at peak aboveground biomass, whereas soil ammonium nitrogen was greatest in early spring. Drought conditions during the third year of the study contributed to nearly two-fold increases in extractable N under the crested wheatgrass pasture and the heavily grazed permanent pasture, but not the moderately grazed permanent pasture. Stepwise regression found select soil properties to be modestly related to soil-atmosphere greenhouse gas fluxes, with model r 2 ranging from 0.09 to 0.76. Electrical conductivity was included most frequently in stepwise regressions and, accordingly, may serve as a useful screening indicator for greenhouse gas ''hot spots'' in grazing land.

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Section: Discussionmentioning

confidence: 98%

Grazing Management, Season, and Drought Contributions to Near-Surface Soil Property Dynamics in Semiarid Rangeland

Liebig

Kronberg

Hendrickson

et al. 2014

Rangeland Ecology & Management

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“…In spatial variability and structural analysis, microbial processes in soil have been investigated for several decades (Parkin, 1993). Some N-cycling processes can be mapped using geostatistical analyses to exhibit spatial patterns (Yanai et al, 2003;Grundmann, 1990;Philippot et al, 2009;Enwall et al, 2010;Guo et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Applying geostatistics to determine the soil quality improvement by Jerusalem artichoke in coastal saline zone

Long

Zhao

Liu

et al. 2014

Ecological Engineering

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a b s t r a c tThe plant growth characteristics are spatially variable due to inherent variability in soil properties and other parameters of the landscape. In the study, the plot size in the field was 670 m in length (south-north direction), and 70 m in width. The stem height and diameter were measured in October, and tuber yield was evaluated in December 2012. The salt content of 0-5, 5-10 and 10-20 cm depth of soil was measured. The morphological characteristics and normal distribution test were analyzed by descriptive statistics using Matlab. The collaborative kriging interpolation and the distribution of spatial heterogeneity of related parameters were analyzed using GS+ software. Soil salt content increased with increasing soil depth. At the same soil depth, the salt content was higher in the north than the south part. The root fresh weights, tuber number, stem height and diameter of Jerusalem artichoke were relatively larger in the north than the south. The distributions of tuber fresh weight and tuber number in space were similar. The Pearson correlation coefficient between tuber fresh weight and tuber number was up to 0.70. Jerusalem artichoke's morphological characteristics were directly related to soil salt content. Inherent variability of position and soil properties could strongly influence the morphological characteristics of Jerusalem artichoke.

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“…Greenhouse gas fluxes from soils, particularly those of nitrous oxide (N 2 O), show large spatial variability (Ball et al 1997;Yanai et al 2003) and temporal variability (e.g. Akiyama et al 2000).…”

Section: Introductionmentioning

confidence: 99%

Automated sampling system for long-term monitoring of nitrous oxide and methane fluxes from soils

Akiyama

Hayakawa

Sudo

et al. 2009

Soil Science and Plant Nutrition

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We describe an automated gas sampling system for monitoring trace gas fluxes from soils. The sampling system allows automated collection of gas samples in glass vials using a syringe pump connected to an automated static chamber installed in the field. The gas samples are transferred to a laboratory and then analyzed using a gas chromatography system. Comparisons between manual and automated sampling of standard gases showed good agreement (r 2 = 0.99996 for N 2 O, r 2 = 0.999 for CH 4 and r 2 = 0.998 for CO 2 ). In a field test, replicated flux measurements using two chambers generally showed good agreement. The sampling system allows frequent and long-term monitoring of fluxes under a wide range of weather conditions (tested temperatures ranged from -6.5 to 40°C; 127 mm day -1 max precipitation). The major advantages of the system are its increased portability, ease of operation and cost effectiveness compared with on-line automated sampling/analytical systems.

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Spatial Variability of Nitrous Oxide Emissions and Their Soil‐Related Determining Factors in an Agricultural Field

Cited by 126 publications

References 34 publications

Grazing Management, Season, and Drought Contributions to Near-Surface Soil Property Dynamics in Semiarid Rangeland

Grazing Management, Season, and Drought Contributions to Near-Surface Soil Property Dynamics in Semiarid Rangeland

Applying geostatistics to determine the soil quality improvement by Jerusalem artichoke in coastal saline zone

Automated sampling system for long-term monitoring of nitrous oxide and methane fluxes from soils

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